Literature DB >> 21583134

16α,17α-Ep-oxy-5α-hydr-oxy-6β-nitrooxy-20-oxopregnan-3β-yl acetate.

R M A Pinto, A Matos Beja, J A R Salvador, J A Paixão.   

Abstract

The title steroid, C(23)H(33)NO(8), is a pregnane derivative obtained regio-, stereo- and chemoselectively from the ring opening of the corresponding 5α,6α;16α,17α-diepoxide with bis-muth(III) nitrate. There are two symmetry-independent mol-ecules in the asymmetric unit that show no significant differences concerning bond lengths and angles. All rings are trans-fused. The conformations of the six-membered rings are close to chair forms, while the five-membered ring adopts an envelope conformation. The mol-ecules are held together by an extensive O-H⋯O hydrogen-bonding network of chains runnning along the a axis.

Entities:  

Year:  2009        PMID: 21583134      PMCID: PMC2969566          DOI: 10.1107/S1600536809016997

Source DB:  PubMed          Journal:  Acta Crystallogr Sect E Struct Rep Online        ISSN: 1600-5368


Related literature

For epoxy­steroid chemistry, see: Salvador et al. (2006 ▶, 2008 ▶); Pinto et al. (2008a ▶). For the synthesis of β-hydr­oxy nitrates, see: Pinto et al. (2007a ▶). For the structures of 5α-hydr­oxy-6β-substituted steroids, see: Pinto et al. (2007b ▶, 2008b ▶,c ▶). For puckering parameters, see: Cremer & Pople (1975 ▶).

Experimental

Crystal data

C23H33NO8 M = 451.50 Triclinic, a = 10.9740 (3) Å b = 11.0721 (3) Å c = 11.1686 (3) Å α = 77.2135 (15)° β = 73.2087 (14)° γ = 64.3465 (14)° V = 1163.81 (6) Å3 Z = 2 Mo Kα radiation μ = 0.10 mm−1 T = 223 K 0.32 × 0.17 × 0.06 mm

Data collection

Bruker APEXII CCD area-detector diffractometer Absorption correction: multi-scan (SADABS; Sheldrick, 2000 ▶) T min = 0.947, T max = 0.994 24934 measured reflections 5770 independent reflections 4806 reflections with I > 2σ(I) R int = 0.025

Refinement

R[F 2 > 2σ(F 2)] = 0.043 wR(F 2) = 0.118 S = 1.04 5770 reflections 587 parameters 3 restraints H-atom parameters constrained Δρmax = 0.37 e Å−3 Δρmin = −0.27 e Å−3 Data collection: SMART (Bruker, 2003 ▶); cell refinement: SAINT (Bruker, 2003 ▶); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ▶); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008 ▶); molecular graphics: PLATON (Spek, 2009 ▶); software used to prepare material for publication: SHELXL97. Crystal structure: contains datablocks global, I. DOI: 10.1107/S1600536809016997/bt2943sup1.cif Structure factors: contains datablocks I. DOI: 10.1107/S1600536809016997/bt2943Isup2.hkl Additional supplementary materials: crystallographic information; 3D view; checkCIF report Enhanced figure: interactive version of Fig. 1
C23H33NO8Z = 2
Mr = 451.50F(000) = 484
Triclinic, P1Dx = 1.288 Mg m3
Hall symbol: P 1Melting point: 455 K
a = 10.9740 (3) ÅMo Kα radiation, λ = 0.71073 Å
b = 11.0721 (3) ÅCell parameters from 9093 reflections
c = 11.1686 (3) Åθ = 2.3–28.3°
α = 77.2135 (15)°µ = 0.10 mm1
β = 73.2087 (14)°T = 223 K
γ = 64.3465 (14)°Truncated pyramid, clear colourless
V = 1163.81 (6) Å30.32 × 0.17 × 0.06 mm
Bruker APEXII CCD area-detector diffractometer5770 independent reflections
Radiation source: fine-focus sealed tube4806 reflections with I > 2σ(I)
graphiteRint = 0.025
φ and ω scansθmax = 28.4°, θmin = 1.9°
Absorption correction: multi-scan (SADABS; Sheldrick, 2000)h = −14→14
Tmin = 0.947, Tmax = 0.994k = −14→14
24934 measured reflectionsl = −14→14
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.043Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.118H-atom parameters constrained
S = 1.04w = 1/[σ2(Fo2) + (0.0639P)2 + 0.1756P] where P = (Fo2 + 2Fc2)/3
5770 reflections(Δ/σ)max = 0.001
587 parametersΔρmax = 0.37 e Å3
3 restraintsΔρmin = −0.27 e Å3
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes.
Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > σ(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger.
xyzUiso*/Ueq
O3A0.06020 (16)0.62076 (15)0.97526 (17)0.0507 (4)
O5A0.25633 (16)0.83696 (15)0.69606 (17)0.0485 (4)
H5A0.19100.84720.66760.073*
O6A0.48378 (19)0.5008 (2)0.6049 (2)0.0654 (5)
O7A0.3044 (3)0.4890 (4)0.5533 (3)0.1164 (12)
O8A0.4744 (3)0.3104 (4)0.6076 (4)0.1458 (16)
O16A0.81145 (17)0.95570 (17)0.41953 (15)0.0499 (4)
O20A1.02169 (17)0.84865 (19)0.62988 (16)0.0544 (4)
O22A−0.1011 (2)0.80189 (19)1.0641 (2)0.0823 (7)
N6A0.4134 (4)0.4278 (4)0.5858 (3)0.0930 (11)
C1A0.3439 (2)0.7488 (2)0.9258 (2)0.0432 (5)
H1A10.40330.73840.98020.052*
H1A20.29460.84460.90430.052*
C2A0.2381 (3)0.6876 (3)0.9985 (2)0.0489 (5)
H2A10.28660.59461.03010.059*
H2A20.17970.73701.07000.059*
C3A0.1494 (2)0.6932 (2)0.9148 (2)0.0425 (5)
H3A0.09190.78760.89180.051*
C4A0.2359 (2)0.6276 (2)0.7965 (2)0.0420 (5)
H4A10.17580.63520.74390.050*
H4A20.28830.53260.81840.050*
C5A0.3353 (2)0.6952 (2)0.7239 (2)0.0362 (4)
C6A0.4110 (2)0.6457 (3)0.5945 (2)0.0489 (6)
H6A0.34190.67070.54440.059*
C7A0.5159 (3)0.7067 (3)0.5227 (2)0.0492 (6)
H7A10.46640.80020.49310.059*
H7A20.57150.65930.44950.059*
C8A0.6127 (2)0.7006 (2)0.60137 (19)0.0355 (4)
H8A0.67440.60660.61980.043*
C9A0.5271 (2)0.7617 (2)0.72606 (18)0.0324 (4)
H9A0.46330.85320.70260.039*
C10A0.4350 (2)0.6846 (2)0.80441 (19)0.0332 (4)
C11A0.6170 (2)0.7770 (3)0.8001 (2)0.0428 (5)
H11A0.67310.68820.83480.051*
H11B0.55660.82810.87000.051*
C12A0.7133 (2)0.8475 (2)0.7209 (2)0.0408 (5)
H12A0.65830.94120.69700.049*
H12B0.77390.84490.77070.049*
C13A0.8004 (2)0.7773 (2)0.60263 (18)0.0335 (4)
C14A0.6984 (2)0.7818 (2)0.53019 (18)0.0365 (4)
H14A0.63250.87590.52280.044*
C15A0.7847 (3)0.7533 (3)0.3968 (2)0.0499 (6)
H15A0.83640.65740.39140.060*
H15B0.72690.79060.33550.060*
C16A0.8799 (3)0.8247 (3)0.3783 (2)0.0504 (6)
H16A0.96280.80470.30970.060*
C17A0.8868 (2)0.8440 (2)0.5022 (2)0.0385 (5)
C18A0.9024 (2)0.6327 (2)0.6365 (2)0.0490 (5)
H18A0.95260.58970.56110.074*
H18B0.85170.58220.69180.074*
H18C0.96620.63620.67760.074*
C19A0.5259 (2)0.5372 (2)0.8420 (2)0.0470 (5)
H19A0.57550.53410.90150.071*
H19B0.59060.49770.76860.071*
H19C0.46820.48770.87950.071*
C20A1.0047 (2)0.8640 (2)0.5232 (2)0.0439 (5)
C21A1.0994 (3)0.9042 (3)0.4129 (3)0.0666 (8)
H21A1.15120.93920.44120.100*
H21B1.04600.97240.35710.100*
H21C1.16200.82710.36930.100*
C22A−0.0654 (2)0.6892 (2)1.0404 (2)0.0445 (5)
C23A−0.1511 (3)0.6078 (3)1.0851 (3)0.0584 (7)
H23A−0.10860.53161.14160.088*
H23B−0.15800.57701.01440.088*
H23C−0.24200.66231.12820.088*
O3B0.03807 (17)0.2481 (2)0.42055 (18)0.0665 (6)
O5B0.30588 (15)0.31642 (16)0.07748 (15)0.0455 (4)
H5B0.24680.31320.04860.068*
O6B0.49821 (17)−0.04860 (16)0.14594 (16)0.0485 (4)
O7B0.3139 (2)−0.0808 (2)0.13150 (19)0.0636 (5)
O8B0.4702 (3)−0.2329 (2)0.2290 (2)0.0815 (7)
O16B0.91153 (17)0.29534 (16)−0.21292 (14)0.0464 (4)
O20B1.10024 (18)0.26700 (19)0.00177 (17)0.0578 (5)
O22B−0.1340 (2)0.4244 (3)0.3654 (4)0.1382 (16)
N6B0.4192 (3)−0.1261 (2)0.1694 (2)0.0557 (6)
C1B0.3450 (2)0.3480 (3)0.3030 (2)0.0499 (6)
H1B10.39500.36740.35010.060*
H1B20.31380.42520.24160.060*
C2B0.2177 (3)0.3285 (3)0.3940 (3)0.0607 (7)
H2B10.24760.25800.46120.073*
H2B20.15630.41120.43140.073*
C3B0.1406 (2)0.2911 (3)0.3268 (2)0.0526 (6)
H3B0.09410.36880.27070.063*
C4B0.2338 (2)0.1719 (3)0.2531 (2)0.0437 (5)
H4B10.18080.15620.20650.052*
H4B20.26760.09190.31100.052*
C5B0.3569 (2)0.1962 (2)0.16149 (19)0.0356 (4)
C6B0.4437 (2)0.0847 (2)0.0747 (2)0.0403 (5)
H6B0.38540.08280.02380.048*
C7B0.5691 (2)0.1061 (2)−0.0130 (2)0.0382 (5)
H7B10.53770.1808−0.07650.046*
H7B20.62740.0261−0.05570.046*
C8B0.6561 (2)0.1351 (2)0.05285 (19)0.0319 (4)
H8B0.70230.05410.10610.038*
C9B0.5642 (2)0.2522 (2)0.13436 (18)0.0324 (4)
H9B0.52050.33050.07720.039*
C10B0.4443 (2)0.2234 (2)0.23346 (19)0.0361 (4)
C11B0.6523 (2)0.2916 (2)0.1920 (2)0.0425 (5)
H11C0.59230.37100.23500.051*
H11D0.69140.21890.25430.051*
C12B0.7707 (2)0.3208 (2)0.0949 (2)0.0398 (5)
H12C0.73220.40250.04040.048*
H12D0.82750.33510.13810.048*
C13B0.8598 (2)0.2044 (2)0.01604 (19)0.0328 (4)
C14B0.7641 (2)0.17770 (19)−0.04354 (18)0.0309 (4)
H14B0.71180.2649−0.08590.037*
C15B0.8623 (2)0.0906 (2)−0.1492 (2)0.0410 (5)
H15C0.9032−0.0036−0.11690.049*
H15D0.81520.0990−0.21380.049*
C16B0.9698 (2)0.1512 (2)−0.1981 (2)0.0446 (5)
H16B1.05860.1020−0.25260.054*
C17B0.9659 (2)0.2245 (2)−0.1007 (2)0.0391 (5)
C18B0.9412 (2)0.0794 (2)0.0968 (2)0.0439 (5)
H18D0.99800.10120.13240.066*
H18E0.99890.00760.04510.066*
H18F0.87750.05140.16320.066*
C19B0.5032 (2)0.1046 (3)0.3303 (2)0.0445 (5)
H19D0.53920.13210.38350.067*
H19E0.57620.03100.28730.067*
H19F0.43100.07630.38070.067*
C20B1.0865 (2)0.2525 (3)−0.0962 (2)0.0491 (6)
C21B1.1848 (4)0.2674 (5)−0.2163 (3)0.1020 (14)
H21D1.24570.3015−0.20190.153*
H21E1.13390.3292−0.27700.153*
H21F1.23830.1812−0.24770.153*
C22B−0.0931 (2)0.3207 (3)0.4269 (2)0.0508 (6)
C23B−0.1833 (3)0.2606 (3)0.5197 (3)0.0667 (8)
H23D−0.23770.31830.58510.100*
H23E−0.12740.17390.55570.100*
H23F−0.24370.25040.47890.100*
U11U22U33U12U13U23
O3A0.0356 (8)0.0377 (8)0.0753 (11)−0.0206 (7)0.0026 (8)−0.0061 (7)
O5A0.0339 (8)0.0463 (8)0.0693 (11)−0.0195 (7)−0.0230 (8)0.0087 (8)
O6A0.0541 (10)0.0717 (12)0.0871 (13)−0.0415 (10)0.0103 (9)−0.0404 (10)
O7A0.0903 (19)0.188 (3)0.126 (2)−0.098 (2)0.0199 (17)−0.091 (2)
O8A0.106 (2)0.107 (2)0.229 (4)−0.0783 (19)0.076 (2)−0.101 (2)
O16A0.0482 (9)0.0594 (10)0.0492 (9)−0.0293 (8)−0.0246 (8)0.0158 (7)
O20A0.0399 (9)0.0807 (12)0.0554 (10)−0.0372 (9)−0.0184 (8)0.0065 (9)
O22A0.0664 (12)0.0499 (11)0.1097 (17)−0.0310 (10)0.0361 (12)−0.0248 (11)
N6A0.080 (2)0.112 (3)0.108 (2)−0.071 (2)0.0487 (18)−0.075 (2)
C1A0.0394 (11)0.0564 (13)0.0418 (11)−0.0281 (10)−0.0023 (9)−0.0106 (10)
C2A0.0452 (13)0.0540 (13)0.0465 (13)−0.0262 (11)0.0040 (10)−0.0083 (10)
C3A0.0316 (10)0.0338 (10)0.0613 (14)−0.0193 (9)−0.0007 (10)−0.0028 (10)
C4A0.0317 (10)0.0434 (11)0.0574 (13)−0.0194 (9)−0.0130 (10)−0.0042 (10)
C5A0.0274 (9)0.0408 (10)0.0442 (11)−0.0163 (8)−0.0100 (8)−0.0032 (9)
C6A0.0429 (12)0.0731 (16)0.0485 (13)−0.0348 (12)−0.0119 (10)−0.0133 (12)
C7A0.0485 (13)0.0788 (17)0.0392 (12)−0.0413 (13)−0.0105 (10)−0.0074 (11)
C8A0.0317 (10)0.0466 (11)0.0345 (10)−0.0202 (9)−0.0083 (8)−0.0048 (8)
C9A0.0281 (9)0.0409 (10)0.0332 (9)−0.0165 (8)−0.0096 (8)−0.0039 (8)
C10A0.0279 (9)0.0377 (10)0.0375 (10)−0.0161 (8)−0.0086 (8)−0.0027 (8)
C11A0.0383 (11)0.0677 (15)0.0344 (11)−0.0320 (11)−0.0069 (9)−0.0072 (10)
C12A0.0357 (10)0.0579 (13)0.0419 (11)−0.0284 (10)−0.0110 (9)−0.0063 (10)
C13A0.0280 (9)0.0407 (10)0.0352 (10)−0.0174 (8)−0.0106 (8)0.0020 (8)
C14A0.0346 (10)0.0501 (12)0.0329 (10)−0.0234 (9)−0.0086 (8)−0.0042 (9)
C15A0.0549 (14)0.0716 (16)0.0355 (11)−0.0386 (13)−0.0080 (10)−0.0032 (10)
C16A0.0502 (13)0.0709 (16)0.0370 (11)−0.0363 (13)−0.0061 (10)0.0023 (11)
C17A0.0320 (10)0.0434 (11)0.0389 (11)−0.0170 (9)−0.0111 (8)0.0066 (9)
C18A0.0360 (11)0.0484 (12)0.0602 (14)−0.0190 (10)−0.0143 (11)0.0086 (11)
C19A0.0355 (11)0.0468 (12)0.0591 (14)−0.0190 (10)−0.0165 (10)0.0070 (10)
C20A0.0312 (10)0.0485 (12)0.0527 (13)−0.0197 (9)−0.0129 (10)0.0061 (10)
C21A0.0521 (15)0.096 (2)0.0631 (16)−0.0508 (15)−0.0147 (13)0.0184 (15)
C22A0.0390 (11)0.0392 (11)0.0514 (13)−0.0207 (9)0.0016 (10)−0.0021 (9)
C23A0.0462 (14)0.0622 (15)0.0719 (17)−0.0346 (12)0.0039 (12)−0.0118 (13)
O3B0.0297 (8)0.0783 (12)0.0635 (11)−0.0161 (8)0.0037 (8)0.0164 (10)
O5B0.0340 (8)0.0600 (10)0.0486 (9)−0.0258 (7)−0.0174 (7)0.0090 (7)
O6B0.0491 (9)0.0516 (9)0.0585 (10)−0.0330 (8)−0.0122 (8)−0.0038 (7)
O7B0.0630 (12)0.0880 (14)0.0672 (11)−0.0559 (11)−0.0044 (10)−0.0193 (10)
O8B0.1071 (19)0.0662 (13)0.0834 (15)−0.0555 (13)−0.0197 (13)0.0114 (11)
O16B0.0472 (9)0.0549 (9)0.0446 (8)−0.0313 (8)−0.0177 (7)0.0133 (7)
O20B0.0483 (10)0.0788 (12)0.0646 (11)−0.0426 (9)−0.0236 (9)0.0085 (9)
O22B0.0451 (13)0.116 (2)0.178 (3)−0.0182 (13)−0.0023 (16)0.071 (2)
N6B0.0648 (14)0.0665 (14)0.0500 (12)−0.0458 (12)0.0055 (11)−0.0158 (11)
C1B0.0364 (11)0.0636 (15)0.0512 (13)−0.0185 (11)−0.0018 (10)−0.0224 (11)
C2B0.0428 (13)0.0787 (18)0.0522 (14)−0.0218 (13)0.0102 (11)−0.0233 (13)
C3B0.0330 (11)0.0666 (15)0.0473 (13)−0.0206 (11)−0.0007 (10)0.0059 (11)
C4B0.0314 (10)0.0632 (14)0.0422 (11)−0.0271 (10)−0.0082 (9)0.0007 (10)
C5B0.0273 (9)0.0504 (12)0.0347 (10)−0.0212 (9)−0.0092 (8)0.0000 (9)
C6B0.0398 (11)0.0520 (12)0.0413 (11)−0.0288 (10)−0.0105 (9)−0.0043 (9)
C7B0.0360 (10)0.0527 (12)0.0370 (10)−0.0283 (10)−0.0019 (8)−0.0117 (9)
C8B0.0271 (9)0.0371 (10)0.0368 (10)−0.0173 (8)−0.0082 (8)−0.0031 (8)
C9B0.0263 (9)0.0390 (10)0.0361 (10)−0.0152 (8)−0.0087 (8)−0.0050 (8)
C10B0.0282 (9)0.0486 (11)0.0356 (10)−0.0174 (9)−0.0081 (8)−0.0061 (9)
C11B0.0372 (11)0.0568 (13)0.0448 (12)−0.0242 (10)−0.0086 (9)−0.0159 (10)
C12B0.0374 (11)0.0429 (11)0.0514 (12)−0.0227 (9)−0.0163 (10)−0.0057 (9)
C13B0.0277 (9)0.0378 (10)0.0383 (10)−0.0179 (8)−0.0126 (8)0.0031 (8)
C14B0.0268 (9)0.0327 (9)0.0362 (10)−0.0151 (8)−0.0083 (8)−0.0010 (8)
C15B0.0386 (11)0.0469 (12)0.0400 (11)−0.0238 (10)0.0000 (9)−0.0066 (9)
C16B0.0365 (11)0.0535 (13)0.0441 (12)−0.0238 (10)−0.0027 (9)−0.0014 (10)
C17B0.0314 (10)0.0418 (11)0.0447 (12)−0.0192 (9)−0.0128 (9)0.0101 (9)
C18B0.0362 (11)0.0503 (12)0.0474 (12)−0.0231 (10)−0.0168 (9)0.0133 (10)
C19B0.0372 (11)0.0645 (14)0.0362 (11)−0.0248 (10)−0.0110 (9)−0.0004 (10)
C20B0.0351 (11)0.0604 (14)0.0588 (14)−0.0306 (11)−0.0161 (11)0.0121 (11)
C21B0.081 (2)0.190 (4)0.073 (2)−0.105 (3)0.0000 (18)−0.002 (2)
C22B0.0357 (12)0.0502 (13)0.0587 (14)−0.0153 (10)−0.0060 (11)−0.0006 (11)
C23B0.0380 (13)0.0806 (19)0.0684 (18)−0.0246 (13)0.0039 (12)−0.0014 (15)
O3A—C22A1.328 (3)O3B—C22B1.299 (3)
O3A—C3A1.454 (2)O3B—C3B1.467 (3)
O5A—C5A1.440 (3)O5B—C5B1.439 (3)
O5A—H5A0.8200O5B—H5B0.8200
O6A—N6A1.417 (3)O6B—N6B1.403 (2)
O6A—C6A1.445 (3)O6B—C6B1.470 (3)
O7A—N6A1.209 (5)O7B—N6B1.206 (3)
O8A—N6A1.182 (5)O8B—N6B1.204 (3)
O16A—C16A1.426 (3)O16B—C16B1.430 (3)
O16A—C17A1.455 (2)O16B—C17B1.461 (2)
O20A—C20A1.222 (3)O20B—C20B1.200 (3)
O22A—C22A1.201 (3)O22B—C22B1.172 (3)
C1A—C2A1.535 (3)C1B—C2B1.541 (3)
C1A—C10A1.539 (3)C1B—C10B1.542 (3)
C1A—H1A10.9700C1B—H1B10.9700
C1A—H1A20.9700C1B—H1B20.9700
C2A—C3A1.508 (3)C2B—C3B1.502 (4)
C2A—H2A10.9700C2B—H2B10.9700
C2A—H2A20.9700C2B—H2B20.9700
C3A—C4A1.509 (3)C3B—C4B1.513 (4)
C3A—H3A0.9800C3B—H3B0.9800
C4A—C5A1.528 (3)C4B—C5B1.529 (3)
C4A—H4A10.9700C4B—H4B10.9700
C4A—H4A20.9700C4B—H4B20.9700
C5A—C6A1.530 (3)C5B—C6B1.533 (3)
C5A—C10A1.559 (3)C5B—C10B1.568 (3)
C6A—C7A1.525 (3)C6B—C7B1.519 (3)
C6A—H6A0.9800C6B—H6B0.9800
C7A—C8A1.534 (3)C7B—C8B1.527 (3)
C7A—H7A10.9700C7B—H7B10.9700
C7A—H7A20.9700C7B—H7B20.9700
C8A—C14A1.519 (3)C8B—C14B1.519 (3)
C8A—C9A1.546 (3)C8B—C9B1.545 (3)
C8A—H8A0.9800C8B—H8B0.9800
C9A—C11A1.537 (3)C9B—C11B1.545 (3)
C9A—C10A1.556 (3)C9B—C10B1.557 (3)
C9A—H9A0.9800C9B—H9B0.9800
C10A—C19A1.538 (3)C10B—C19B1.535 (3)
C11A—C12A1.542 (3)C11B—C12B1.536 (3)
C11A—H11A0.9700C11B—H11C0.9700
C11A—H11B0.9700C11B—H11D0.9700
C12A—C13A1.531 (3)C12B—C13B1.519 (3)
C12A—H12A0.9700C12B—H12C0.9700
C12A—H12B0.9700C12B—H12D0.9700
C13A—C17A1.525 (3)C13B—C17B1.525 (3)
C13A—C14A1.539 (3)C13B—C18B1.540 (3)
C13A—C18A1.544 (3)C13B—C14B1.547 (3)
C14A—C15A1.533 (3)C14B—C15B1.534 (3)
C14A—H14A0.9800C14B—H14B0.9800
C15A—C16A1.509 (3)C15B—C16B1.514 (3)
C15A—H15A0.9700C15B—H15C0.9700
C15A—H15B0.9700C15B—H15D0.9700
C16A—C17A1.474 (3)C16B—C17B1.476 (3)
C16A—H16A0.9800C16B—H16B0.9800
C17A—C20A1.491 (3)C17B—C20B1.501 (3)
C18A—H18A0.9600C18B—H18D0.9600
C18A—H18B0.9600C18B—H18E0.9600
C18A—H18C0.9600C18B—H18F0.9600
C19A—H19A0.9600C19B—H19D0.9600
C19A—H19B0.9600C19B—H19E0.9600
C19A—H19C0.9600C19B—H19F0.9600
C20A—C21A1.488 (3)C20B—C21B1.487 (4)
C21A—H21A0.9600C21B—H21D0.9600
C21A—H21B0.9600C21B—H21E0.9600
C21A—H21C0.9600C21B—H21F0.9600
C22A—C23A1.486 (3)C22B—C23B1.473 (4)
C23A—H23A0.9600C23B—H23D0.9600
C23A—H23B0.9600C23B—H23E0.9600
C23A—H23C0.9600C23B—H23F0.9600
C22A—O3A—C3A117.75 (16)C22B—O3B—C3B119.48 (19)
C5A—O5A—H5A109.5C5B—O5B—H5B109.5
N6A—O6A—C6A115.8 (2)N6B—O6B—C6B115.81 (17)
C16A—O16A—C17A61.54 (15)C16B—O16B—C17B61.39 (14)
O8A—N6A—O7A129.8 (3)O8B—N6B—O7B129.0 (2)
O8A—N6A—O6A111.1 (4)O8B—N6B—O6B111.6 (2)
O7A—N6A—O6A119.1 (3)O7B—N6B—O6B119.4 (2)
C2A—C1A—C10A113.77 (18)C2B—C1B—C10B112.8 (2)
C2A—C1A—H1A1108.8C2B—C1B—H1B1109.0
C10A—C1A—H1A1108.8C10B—C1B—H1B1109.0
C2A—C1A—H1A2108.8C2B—C1B—H1B2109.0
C10A—C1A—H1A2108.8C10B—C1B—H1B2109.0
H1A1—C1A—H1A2107.7H1B1—C1B—H1B2107.8
C3A—C2A—C1A110.73 (19)C3B—C2B—C1B111.1 (2)
C3A—C2A—H2A1109.5C3B—C2B—H2B1109.4
C1A—C2A—H2A1109.5C1B—C2B—H2B1109.4
C3A—C2A—H2A2109.5C3B—C2B—H2B2109.4
C1A—C2A—H2A2109.5C1B—C2B—H2B2109.4
H2A1—C2A—H2A2108.1H2B1—C2B—H2B2108.0
O3A—C3A—C2A112.36 (19)O3B—C3B—C2B108.8 (2)
O3A—C3A—C4A105.21 (17)O3B—C3B—C4B105.5 (2)
C2A—C3A—C4A111.78 (18)C2B—C3B—C4B112.6 (2)
O3A—C3A—H3A109.1O3B—C3B—H3B109.9
C2A—C3A—H3A109.1C2B—C3B—H3B109.9
C4A—C3A—H3A109.1C4B—C3B—H3B109.9
C3A—C4A—C5A110.32 (17)C3B—C4B—C5B111.33 (19)
C3A—C4A—H4A1109.6C3B—C4B—H4B1109.4
C5A—C4A—H4A1109.6C5B—C4B—H4B1109.4
C3A—C4A—H4A2109.6C3B—C4B—H4B2109.4
C5A—C4A—H4A2109.6C5B—C4B—H4B2109.4
H4A1—C4A—H4A2108.1H4B1—C4B—H4B2108.0
O5A—C5A—C4A108.95 (16)O5B—C5B—C4B109.03 (16)
O5A—C5A—C6A104.13 (18)O5B—C5B—C6B104.41 (16)
C4A—C5A—C6A112.31 (18)C4B—C5B—C6B112.52 (17)
O5A—C5A—C10A106.21 (16)O5B—C5B—C10B106.11 (16)
C4A—C5A—C10A111.51 (17)C4B—C5B—C10B110.82 (16)
C6A—C5A—C10A113.19 (16)C6B—C5B—C10B113.46 (16)
O6A—C6A—C7A107.7 (2)O6B—C6B—C7B105.97 (18)
O6A—C6A—C5A111.27 (19)O6B—C6B—C5B111.95 (17)
C7A—C6A—C5A113.30 (18)C7B—C6B—C5B112.54 (17)
O6A—C6A—H6A108.1O6B—C6B—H6B108.8
C7A—C6A—H6A108.1C7B—C6B—H6B108.8
C5A—C6A—H6A108.1C5B—C6B—H6B108.8
C6A—C7A—C8A113.66 (18)C6B—C7B—C8B114.21 (17)
C6A—C7A—H7A1108.8C6B—C7B—H7B1108.7
C8A—C7A—H7A1108.8C8B—C7B—H7B1108.7
C6A—C7A—H7A2108.8C6B—C7B—H7B2108.7
C8A—C7A—H7A2108.8C8B—C7B—H7B2108.7
H7A1—C7A—H7A2107.7H7B1—C7B—H7B2107.6
C14A—C8A—C7A110.26 (17)C14B—C8B—C7B110.35 (16)
C14A—C8A—C9A107.88 (17)C14B—C8B—C9B107.18 (15)
C7A—C8A—C9A110.20 (17)C7B—C8B—C9B110.61 (15)
C14A—C8A—H8A109.5C14B—C8B—H8B109.6
C7A—C8A—H8A109.5C7B—C8B—H8B109.6
C9A—C8A—H8A109.5C9B—C8B—H8B109.6
C11A—C9A—C8A112.49 (16)C8B—C9B—C11B111.29 (16)
C11A—C9A—C10A113.98 (16)C8B—C9B—C10B112.15 (16)
C8A—C9A—C10A111.10 (16)C11B—C9B—C10B113.40 (16)
C11A—C9A—H9A106.2C8B—C9B—H9B106.5
C8A—C9A—H9A106.2C11B—C9B—H9B106.5
C10A—C9A—H9A106.2C10B—C9B—H9B106.5
C19A—C10A—C1A107.93 (18)C19B—C10B—C1B108.82 (19)
C19A—C10A—C9A110.37 (16)C19B—C10B—C9B110.16 (16)
C1A—C10A—C9A111.64 (16)C1B—C10B—C9B110.93 (17)
C19A—C10A—C5A111.83 (17)C19B—C10B—C5B112.43 (18)
C1A—C10A—C5A107.02 (16)C1B—C10B—C5B106.45 (16)
C9A—C10A—C5A108.04 (15)C9B—C10B—C5B108.00 (15)
C9A—C11A—C12A114.04 (17)C12B—C11B—C9B113.84 (17)
C9A—C11A—H11A108.7C12B—C11B—H11C108.8
C12A—C11A—H11A108.7C9B—C11B—H11C108.8
C9A—C11A—H11B108.7C12B—C11B—H11D108.8
C12A—C11A—H11B108.7C9B—C11B—H11D108.8
H11A—C11A—H11B107.6H11C—C11B—H11D107.7
C13A—C12A—C11A110.20 (17)C13B—C12B—C11B110.84 (16)
C13A—C12A—H12A109.6C13B—C12B—H12C109.5
C11A—C12A—H12A109.6C11B—C12B—H12C109.5
C13A—C12A—H12B109.6C13B—C12B—H12D109.5
C11A—C12A—H12B109.6C11B—C12B—H12D109.5
H12A—C12A—H12B108.1H12C—C12B—H12D108.1
C17A—C13A—C12A118.28 (17)C12B—C13B—C17B118.65 (17)
C17A—C13A—C14A101.29 (15)C12B—C13B—C18B110.49 (18)
C12A—C13A—C14A106.94 (16)C17B—C13B—C18B105.91 (16)
C17A—C13A—C18A105.86 (16)C12B—C13B—C14B108.06 (16)
C12A—C13A—C18A111.21 (17)C17B—C13B—C14B100.91 (16)
C14A—C13A—C18A113.05 (18)C18B—C13B—C14B112.58 (16)
C8A—C14A—C15A120.13 (18)C8B—C14B—C15B120.56 (16)
C8A—C14A—C13A113.00 (16)C8B—C14B—C13B113.40 (16)
C15A—C14A—C13A104.83 (17)C15B—C14B—C13B104.89 (16)
C8A—C14A—H14A106.0C8B—C14B—H14B105.6
C15A—C14A—H14A106.0C15B—C14B—H14B105.6
C13A—C14A—H14A106.0C13B—C14B—H14B105.6
C16A—C15A—C14A101.89 (18)C16B—C15B—C14B101.39 (17)
C16A—C15A—H15A111.4C16B—C15B—H15C111.5
C14A—C15A—H15A111.4C14B—C15B—H15C111.5
C16A—C15A—H15B111.4C16B—C15B—H15D111.5
C14A—C15A—H15B111.4C14B—C15B—H15D111.5
H15A—C15A—H15B109.3H15C—C15B—H15D109.3
O16A—C16A—C17A60.22 (14)O16B—C16B—C17B60.32 (14)
O16A—C16A—C15A113.6 (2)O16B—C16B—C15B113.52 (18)
C17A—C16A—C15A109.16 (19)C17B—C16B—C15B109.40 (18)
O16A—C16A—H16A119.8O16B—C16B—H16B119.8
C17A—C16A—H16A119.8C17B—C16B—H16B119.8
C15A—C16A—H16A119.8C15B—C16B—H16B119.8
O16A—C17A—C16A58.24 (15)O16B—C17B—C16B58.29 (14)
O16A—C17A—C20A111.10 (17)O16B—C17B—C20B111.54 (17)
C16A—C17A—C20A123.0 (2)C16B—C17B—C20B123.1 (2)
O16A—C17A—C13A115.75 (16)O16B—C17B—C13B115.73 (16)
C16A—C17A—C13A107.69 (18)C16B—C17B—C13B107.64 (17)
C20A—C17A—C13A123.65 (17)C20B—C17B—C13B123.40 (19)
C13A—C18A—H18A109.5C13B—C18B—H18D109.5
C13A—C18A—H18B109.5C13B—C18B—H18E109.5
H18A—C18A—H18B109.5H18D—C18B—H18E109.5
C13A—C18A—H18C109.5C13B—C18B—H18F109.5
H18A—C18A—H18C109.5H18D—C18B—H18F109.5
H18B—C18A—H18C109.5H18E—C18B—H18F109.5
C10A—C19A—H19A109.5C10B—C19B—H19D109.5
C10A—C19A—H19B109.5C10B—C19B—H19E109.5
H19A—C19A—H19B109.5H19D—C19B—H19E109.5
C10A—C19A—H19C109.5C10B—C19B—H19F109.5
H19A—C19A—H19C109.5H19D—C19B—H19F109.5
H19B—C19A—H19C109.5H19E—C19B—H19F109.5
O20A—C20A—C21A120.9 (2)O20B—C20B—C21B121.0 (2)
O20A—C20A—C17A120.1 (2)O20B—C20B—C17B120.5 (2)
C21A—C20A—C17A119.0 (2)C21B—C20B—C17B118.4 (2)
C20A—C21A—H21A109.5C20B—C21B—H21D109.5
C20A—C21A—H21B109.5C20B—C21B—H21E109.5
H21A—C21A—H21B109.5H21D—C21B—H21E109.5
C20A—C21A—H21C109.5C20B—C21B—H21F109.5
H21A—C21A—H21C109.5H21D—C21B—H21F109.5
H21B—C21A—H21C109.5H21E—C21B—H21F109.5
O22A—C22A—O3A122.7 (2)O22B—C22B—O3B122.6 (2)
O22A—C22A—C23A124.9 (2)O22B—C22B—C23B124.0 (2)
O3A—C22A—C23A112.3 (2)O3B—C22B—C23B113.3 (2)
C22A—C23A—H23A109.5C22B—C23B—H23D109.5
C22A—C23A—H23B109.5C22B—C23B—H23E109.5
H23A—C23A—H23B109.5H23D—C23B—H23E109.5
C22A—C23A—H23C109.5C22B—C23B—H23F109.5
H23A—C23A—H23C109.5H23D—C23B—H23F109.5
H23B—C23A—H23C109.5H23E—C23B—H23F109.5
C6A—O6A—N6A—O8A−173.4 (3)C6B—O6B—N6B—O8B−179.4 (2)
C6A—O6A—N6A—O7A5.4 (4)C6B—O6B—N6B—O7B−0.2 (3)
C10A—C1A—C2A—C3A−54.8 (3)C10B—C1B—C2B—C3B−55.8 (3)
C22A—O3A—C3A—C2A90.6 (2)C22B—O3B—C3B—C2B113.4 (3)
C22A—O3A—C3A—C4A−147.5 (2)C22B—O3B—C3B—C4B−125.5 (3)
C1A—C2A—C3A—O3A172.55 (18)C1B—C2B—C3B—O3B169.0 (2)
C1A—C2A—C3A—C4A54.5 (2)C1B—C2B—C3B—C4B52.4 (3)
O3A—C3A—C4A—C5A−179.87 (17)O3B—C3B—C4B—C5B−173.26 (17)
C2A—C3A—C4A—C5A−57.7 (2)C2B—C3B—C4B—C5B−54.7 (3)
C3A—C4A—C5A—O5A−57.2 (2)C3B—C4B—C5B—O5B−58.0 (2)
C3A—C4A—C5A—C6A−172.08 (18)C3B—C4B—C5B—C6B−173.30 (18)
C3A—C4A—C5A—C10A59.7 (2)C3B—C4B—C5B—C10B58.5 (2)
N6A—O6A—C6A—C7A−138.5 (2)N6B—O6B—C6B—C7B−141.69 (18)
N6A—O6A—C6A—C5A96.8 (2)N6B—O6B—C6B—C5B95.3 (2)
O5A—C5A—C6A—O6A−173.49 (17)O5B—C5B—C6B—O6B−176.68 (15)
C4A—C5A—C6A—O6A−55.8 (2)C4B—C5B—C6B—O6B−58.6 (2)
C10A—C5A—C6A—O6A71.6 (2)C10B—C5B—C6B—O6B68.2 (2)
O5A—C5A—C6A—C7A65.0 (2)O5B—C5B—C6B—C7B64.1 (2)
C4A—C5A—C6A—C7A−177.25 (19)C4B—C5B—C6B—C7B−177.82 (18)
C10A—C5A—C6A—C7A−49.9 (3)C10B—C5B—C6B—C7B−51.0 (2)
O6A—C6A—C7A—C8A−75.3 (2)O6B—C6B—C7B—C8B−73.1 (2)
C5A—C6A—C7A—C8A48.2 (3)C5B—C6B—C7B—C8B49.5 (2)
C6A—C7A—C8A—C14A−171.4 (2)C6B—C7B—C8B—C14B−170.62 (17)
C6A—C7A—C8A—C9A−52.4 (3)C6B—C7B—C8B—C9B−52.2 (2)
C14A—C8A—C9A—C11A−51.3 (2)C14B—C8B—C9B—C11B−54.5 (2)
C7A—C8A—C9A—C11A−171.77 (19)C7B—C8B—C9B—C11B−174.82 (17)
C14A—C8A—C9A—C10A179.52 (16)C14B—C8B—C9B—C10B177.30 (15)
C7A—C8A—C9A—C10A59.1 (2)C7B—C8B—C9B—C10B57.0 (2)
C2A—C1A—C10A—C19A−65.6 (2)C2B—C1B—C10B—C19B−63.6 (3)
C2A—C1A—C10A—C9A172.89 (18)C2B—C1B—C10B—C9B175.0 (2)
C2A—C1A—C10A—C5A54.9 (2)C2B—C1B—C10B—C5B57.8 (3)
C11A—C9A—C10A—C19A−65.5 (2)C8B—C9B—C10B—C19B65.8 (2)
C8A—C9A—C10A—C19A62.8 (2)C11B—C9B—C10B—C19B−61.3 (2)
C11A—C9A—C10A—C1A54.5 (2)C8B—C9B—C10B—C1B−173.61 (17)
C8A—C9A—C10A—C1A−177.16 (16)C11B—C9B—C10B—C1B59.3 (2)
C11A—C9A—C10A—C5A171.91 (17)C8B—C9B—C10B—C5B−57.3 (2)
C8A—C9A—C10A—C5A−59.7 (2)C11B—C9B—C10B—C5B175.60 (17)
O5A—C5A—C10A—C19A179.61 (18)O5B—C5B—C10B—C19B178.45 (17)
C4A—C5A—C10A—C19A61.0 (2)C4B—C5B—C10B—C19B60.2 (2)
C6A—C5A—C10A—C19A−66.7 (2)C6B—C5B—C10B—C19B−67.5 (2)
O5A—C5A—C10A—C1A61.6 (2)O5B—C5B—C10B—C1B59.4 (2)
C4A—C5A—C10A—C1A−56.9 (2)C4B—C5B—C10B—C1B−58.8 (2)
C6A—C5A—C10A—C1A175.27 (19)C6B—C5B—C10B—C1B173.45 (18)
O5A—C5A—C10A—C9A−58.7 (2)O5B—C5B—C10B—C9B−59.8 (2)
C4A—C5A—C10A—C9A−177.30 (16)C4B—C5B—C10B—C9B−178.03 (17)
C6A—C5A—C10A—C9A54.9 (2)C6B—C5B—C10B—C9B54.3 (2)
C8A—C9A—C11A—C12A49.7 (3)C8B—C9B—C11B—C12B52.7 (2)
C10A—C9A—C11A—C12A177.32 (18)C10B—C9B—C11B—C12B−179.77 (17)
C9A—C11A—C12A—C13A−53.0 (2)C9B—C11B—C12B—C13B−53.0 (2)
C11A—C12A—C13A—C17A171.14 (17)C11B—C12B—C13B—C17B168.92 (17)
C11A—C12A—C13A—C14A57.8 (2)C11B—C12B—C13B—C18B−68.6 (2)
C11A—C12A—C13A—C18A−66.1 (2)C11B—C12B—C13B—C14B55.0 (2)
C7A—C8A—C14A—C15A−54.1 (3)C7B—C8B—C14B—C15B−52.6 (2)
C9A—C8A—C14A—C15A−174.47 (19)C9B—C8B—C14B—C15B−173.11 (17)
C7A—C8A—C14A—C13A−178.69 (19)C7B—C8B—C14B—C13B−178.11 (17)
C9A—C8A—C14A—C13A60.9 (2)C9B—C8B—C14B—C13B61.38 (19)
C17A—C13A—C14A—C8A170.59 (17)C12B—C13B—C14B—C8B−62.4 (2)
C12A—C13A—C14A—C8A−65.0 (2)C17B—C13B—C14B—C8B172.37 (16)
C18A—C13A—C14A—C8A57.8 (2)C18B—C13B—C14B—C8B59.9 (2)
C17A—C13A—C14A—C15A38.0 (2)C12B—C13B—C14B—C15B164.07 (16)
C12A—C13A—C14A—C15A162.47 (18)C17B—C13B—C14B—C15B38.87 (19)
C18A—C13A—C14A—C15A−74.8 (2)C18B—C13B—C14B—C15B−73.6 (2)
C8A—C14A—C15A—C16A−164.78 (19)C8B—C14B—C15B—C16B−166.35 (17)
C13A—C14A—C15A—C16A−36.4 (2)C13B—C14B—C15B—C16B−37.0 (2)
C17A—O16A—C16A—C15A99.3 (2)C17B—O16B—C16B—C15B99.7 (2)
C14A—C15A—C16A—O16A−44.4 (2)C14B—C15B—C16B—O16B−44.3 (2)
C14A—C15A—C16A—C17A20.6 (3)C14B—C15B—C16B—C17B20.9 (2)
C16A—O16A—C17A—C20A116.6 (2)C16B—O16B—C17B—C20B116.5 (2)
C16A—O16A—C17A—C13A−95.6 (2)C16B—O16B—C17B—C13B−95.6 (2)
C15A—C16A—C17A—O16A−106.9 (2)C15B—C16B—C17B—O16B−106.63 (19)
O16A—C16A—C17A—C20A−95.9 (2)O16B—C16B—C17B—C20B−96.5 (2)
C15A—C16A—C17A—C20A157.2 (2)C15B—C16B—C17B—C20B156.9 (2)
O16A—C16A—C17A—C13A109.81 (17)O16B—C16B—C17B—C13B109.81 (17)
C15A—C16A—C17A—C13A2.9 (3)C15B—C16B—C17B—C13B3.2 (2)
C12A—C13A—C17A—O16A−78.8 (2)C12B—C13B—C17B—O16B−80.6 (2)
C14A—C13A—C17A—O16A37.6 (2)C18B—C13B—C17B—O16B154.57 (18)
C18A—C13A—C17A—O16A155.71 (19)C14B—C13B—C17B—O16B37.1 (2)
C12A—C13A—C17A—C16A−141.5 (2)C12B—C13B—C17B—C16B−143.32 (19)
C14A—C13A—C17A—C16A−25.1 (2)C18B—C13B—C17B—C16B91.89 (19)
C18A—C13A—C17A—C16A93.1 (2)C14B—C13B—C17B—C16B−25.6 (2)
C12A—C13A—C17A—C20A64.4 (3)C12B—C13B—C17B—C20B63.1 (3)
C14A—C13A—C17A—C20A−179.2 (2)C18B—C13B—C17B—C20B−61.7 (3)
C18A—C13A—C17A—C20A−61.0 (3)C14B—C13B—C17B—C20B−179.23 (19)
O16A—C17A—C20A—O20A131.8 (2)O16B—C17B—C20B—O20B141.3 (2)
C16A—C17A—C20A—O20A−163.2 (2)C16B—C17B—C20B—O20B−153.3 (2)
C13A—C17A—C20A—O20A−12.9 (3)C13B—C17B—C20B—O20B−3.7 (4)
O16A—C17A—C20A—C21A−47.5 (3)O16B—C17B—C20B—C21B−36.2 (4)
C16A—C17A—C20A—C21A17.5 (3)C16B—C17B—C20B—C21B29.1 (4)
C13A—C17A—C20A—C21A167.8 (2)C13B—C17B—C20B—C21B178.8 (3)
C3A—O3A—C22A—O22A−9.5 (4)C3B—O3B—C22B—O22B−4.5 (5)
C3A—O3A—C22A—C23A173.6 (2)C3B—O3B—C22B—C23B176.3 (2)
D—H···AD—HH···AD···AD—H···A
O5A—H5A···O20Ai0.822.012.822 (2)168
O5B—H5B···O20Bi0.822.112.913 (2)168
Table 1

Hydrogen-bond geometry (Å, °)

D—H⋯AD—HH⋯ADAD—H⋯A
O5A—H5A⋯O20Ai0.822.012.822 (2)168
O5B—H5B⋯O20Bi0.822.112.913 (2)168

Symmetry code: (i) .

  5 in total

1.  A short history of SHELX.

Authors:  George M Sheldrick
Journal:  Acta Crystallogr A       Date:  2007-12-21       Impact factor: 2.290

2.  5Beta,6beta-epoxy-17-oxoandrostan-3beta-yl acetate and 5beta,6beta-epoxy-20-oxopregnan-3beta-yl acetate.

Authors:  Rui M A Pinto; Jorge A R Salvador; José A Paixão
Journal:  Acta Crystallogr C       Date:  2008-04-19       Impact factor: 1.172

3.  6β-Chloro-5α-hydr-oxy-20-oxopregnan-3β-yl acetate.

Authors:  Rui M A Pinto; Jorge A R Salvador; José A Paixão; Ana Matos Beja; Manuela Ramos Silva
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2008-07-05

4.  6β-Acetamido-5α-hydroxy-cholestan-3β-yl acetate.

Authors:  R M A Pinto; M Ramos Silva; A Matos Beja; J A R Salvador; J A Paixão
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2008-11-08

5.  Structure validation in chemical crystallography.

Authors:  Anthony L Spek
Journal:  Acta Crystallogr D Biol Crystallogr       Date:  2009-01-20
  5 in total
  2 in total

1.  3,3'-Dimethyl-1,1'-(methyl-enedi-p-phenyl-ene)diimidazolium bis-(hexa-fluoro-phosphate).

Authors:  Kun Huang; Ping Zhang; Da-Bin Qin
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2010-08-04

Review 2.  Bismuth(III) reagents in steroid and terpene chemistry.

Authors:  Jorge A R Salvador; Samuel M Silvestre; Rui M A Pinto
Journal:  Molecules       Date:  2011-04-04       Impact factor: 4.411

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