Literature DB >> 21523181

Di-tert-Butyl 2,2'-[2,2'-methyl-enebis(naphthalene-2,1-diyldi-oxy)]diacetate.

Qamar Ali, Itrat Anis, M Raza Shah, Seik Weng Ng.   

Abstract

In the title compound, C(33)H(36)O(6), two naphthalene ring systems are connected through a methyl-ene linkage [C-C-C = 114.9 (2)°]; the ring systems are aligned at an angle of 76.5 (1)°. Of the two -O-CH(2)-C(=O)-C(CH(3))(3) substituents, one adopts an extended conformation whereas the other is U-shaped. In the crystal, mol-ecules are linked via weak C-H⋯O hydrogen bonding, forming supra-molecular chains running along the c axis.

Entities:  

Year:  2011        PMID: 21523181      PMCID: PMC3051626          DOI: 10.1107/S1600536811003291

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


Related literature

For two related structures, see: Ali et al. (2008 ▶); Mustafa et al. (2009 ▶).

Experimental

Crystal data

C33H36O6 M = 528.62 Triclinic, a = 8.9849 (5) Å b = 11.8327 (6) Å c = 13.7768 (6) Å α = 79.804 (4)° β = 74.115 (4)° γ = 88.094 (4)° V = 1386.33 (12) Å3 Z = 2 Mo Kα radiation μ = 0.09 mm−1 T = 100 K 0.35 × 0.15 × 0.05 mm

Data collection

Agilent SuperNova Dual diffractometer with an Atlas detector Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2010 ▶) T min = 0.744, T max = 1.000 11166 measured reflections 6119 independent reflections 3422 reflections with I > 2σ(I) R int = 0.055

Refinement

R[F 2 > 2σ(F 2)] = 0.070 wR(F 2) = 0.171 S = 1.03 6119 reflections 353 parameters H-atom parameters constrained Δρmax = 0.32 e Å−3 Δρmin = −0.24 e Å−3 Data collection: CrysAlis PRO (Agilent, 2010 ▶); cell refinement: CrysAlis PRO; data reduction: CrysAlis PRO; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ▶); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008 ▶); molecular graphics: X-SEED (Barbour, 2001 ▶); software used to prepare material for publication: publCIF (Westrip, 2010 ▶). Crystal structure: contains datablocks global, I. DOI: 10.1107/S1600536811003291/xu5152sup1.cif Structure factors: contains datablocks I. DOI: 10.1107/S1600536811003291/xu5152Isup2.hkl Additional supplementary materials: crystallographic information; 3D view; checkCIF report
C33H36O6Z = 2
Mr = 528.62F(000) = 564
Triclinic, P1Dx = 1.266 Mg m3
Hall symbol: -P 1Mo Kα radiation, λ = 0.71073 Å
a = 8.9849 (5) ÅCell parameters from 2261 reflections
b = 11.8327 (6) Åθ = 2.4–29.2°
c = 13.7768 (6) ŵ = 0.09 mm1
α = 79.804 (4)°T = 100 K
β = 74.115 (4)°Plate, colorless
γ = 88.094 (4)°0.35 × 0.15 × 0.05 mm
V = 1386.33 (12) Å3
Agilent SuperNova Dual diffractometer with an Atlas detector6119 independent reflections
Radiation source: SuperNova (Mo) X-ray Source3422 reflections with I > 2σ(I)
MirrorRint = 0.055
Detector resolution: 10.4041 pixels mm-1θmax = 27.5°, θmin = 2.4°
ω scansh = −11→11
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2010)k = −14→15
Tmin = 0.744, Tmax = 1.000l = −17→14
11166 measured reflections
Refinement on F2Secondary atom site location: difference Fourier map
Least-squares matrix: fullHydrogen site location: inferred from neighbouring sites
R[F2 > 2σ(F2)] = 0.070H-atom parameters constrained
wR(F2) = 0.171w = 1/[σ2(Fo2) + (0.0471P)2 + 0.6065P] where P = (Fo2 + 2Fc2)/3
S = 1.03(Δ/σ)max = 0.001
6119 reflectionsΔρmax = 0.32 e Å3
353 parametersΔρmin = −0.24 e Å3
0 restraintsExtinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4
Primary atom site location: structure-invariant direct methodsExtinction coefficient: 0.0041 (11)
xyzUiso*/Ueq
O10.5505 (2)0.79128 (16)0.41136 (14)0.0244 (5)
O20.5257 (2)0.7736 (2)0.22232 (16)0.0394 (6)
O30.7544 (2)0.68264 (18)0.19433 (14)0.0296 (5)
O40.8474 (2)0.85959 (17)0.63254 (14)0.0250 (5)
O50.9767 (2)0.63445 (17)0.79950 (15)0.0295 (5)
O60.8375 (2)0.63524 (17)0.68527 (15)0.0264 (5)
C10.7803 (3)0.6858 (3)0.0825 (2)0.0284 (7)
C20.6580 (4)0.6145 (3)0.0654 (3)0.0440 (9)
H2A0.65730.53660.10420.066*
H2B0.68010.6112−0.00780.066*
H2C0.55660.64900.08850.066*
C30.7836 (5)0.8078 (3)0.0265 (2)0.0435 (9)
H3A0.86210.85240.04150.065*
H3B0.68190.84200.04920.065*
H3C0.80910.8083−0.04740.065*
C40.9376 (4)0.6325 (4)0.0537 (2)0.0496 (11)
H4A1.01390.67930.06840.074*
H4B0.96710.6287−0.01960.074*
H4C0.93400.55480.09350.074*
C50.6305 (3)0.7267 (3)0.2513 (2)0.0245 (7)
C60.6388 (3)0.7062 (3)0.3610 (2)0.0242 (7)
H6A0.59690.62880.39590.029*
H6B0.74770.71080.36290.029*
C70.5097 (3)0.7688 (2)0.5177 (2)0.0209 (7)
C80.4043 (3)0.6790 (3)0.5699 (2)0.0241 (7)
H80.37200.62840.53300.029*
C90.3482 (3)0.6644 (3)0.6741 (2)0.0252 (7)
H90.27910.60220.70960.030*
C100.3925 (3)0.7412 (3)0.7296 (2)0.0238 (7)
C110.3290 (3)0.7285 (3)0.8372 (2)0.0311 (8)
H110.25810.66730.87230.037*
C120.3692 (4)0.8038 (3)0.8907 (2)0.0339 (8)
H120.32780.79380.96290.041*
C130.4720 (4)0.8961 (3)0.8388 (2)0.0332 (8)
H130.49780.94920.87620.040*
C140.5347 (3)0.9099 (3)0.7350 (2)0.0276 (7)
H140.60380.97270.70140.033*
C150.4991 (3)0.8324 (2)0.6763 (2)0.0228 (7)
C160.5625 (3)0.8441 (2)0.5673 (2)0.0204 (6)
C170.6769 (3)0.9388 (2)0.5040 (2)0.0226 (7)
H17A0.67930.99730.54680.027*
H17B0.63890.97640.44540.027*
C180.8413 (3)0.8990 (2)0.4628 (2)0.0207 (6)
C190.9179 (3)0.9095 (2)0.3562 (2)0.0207 (6)
C200.8482 (3)0.9589 (2)0.2776 (2)0.0245 (7)
H200.74380.98290.29580.029*
C210.9287 (3)0.9723 (2)0.1767 (2)0.0277 (7)
H210.88001.00680.12590.033*
C221.0830 (3)0.9357 (3)0.1464 (2)0.0299 (7)
H221.13730.94470.07580.036*
C231.1533 (3)0.8874 (2)0.2191 (2)0.0271 (7)
H231.25690.86220.19860.032*
C241.0756 (3)0.8740 (2)0.3245 (2)0.0234 (7)
C251.1505 (3)0.8281 (2)0.3997 (2)0.0245 (7)
H251.25400.80260.37910.029*
C261.0776 (3)0.8193 (2)0.5016 (2)0.0232 (7)
H261.12990.78830.55140.028*
C270.9245 (3)0.8564 (2)0.5322 (2)0.0215 (6)
C280.9160 (4)0.8127 (2)0.7114 (2)0.0270 (7)
H28A0.86180.84290.77410.032*
H28B1.02480.84020.69110.032*
C290.9141 (3)0.6837 (3)0.7369 (2)0.0232 (7)
C300.8243 (3)0.5085 (3)0.6977 (2)0.0292 (7)
C310.9837 (4)0.4598 (3)0.6615 (3)0.0387 (9)
H31A1.03090.49450.58990.058*
H31B0.97520.37650.66710.058*
H31C1.04840.47710.70410.058*
C320.7430 (4)0.4586 (3)0.8080 (3)0.0447 (9)
H32A0.63990.49170.82710.067*
H32B0.80340.47680.85280.067*
H32C0.73310.37510.81530.067*
C330.7241 (4)0.4949 (3)0.6290 (3)0.0429 (9)
H33A0.77770.52820.55810.064*
H33B0.62620.53440.65070.064*
H33C0.70330.41310.63340.064*
U11U22U33U12U13U23
O10.0270 (11)0.0235 (12)0.0217 (11)0.0055 (9)−0.0060 (9)−0.0037 (9)
O20.0350 (13)0.0560 (16)0.0316 (13)0.0176 (12)−0.0144 (10)−0.0135 (11)
O30.0316 (12)0.0349 (13)0.0189 (11)0.0073 (10)−0.0032 (9)−0.0028 (9)
O40.0276 (11)0.0252 (12)0.0235 (11)0.0058 (9)−0.0099 (9)−0.0043 (9)
O50.0336 (12)0.0297 (13)0.0261 (12)0.0006 (10)−0.0136 (10)0.0014 (9)
O60.0282 (11)0.0195 (11)0.0346 (12)0.0009 (9)−0.0134 (9)−0.0056 (9)
C10.0309 (17)0.0292 (18)0.0223 (16)0.0011 (14)−0.0033 (13)−0.0032 (13)
C20.054 (2)0.042 (2)0.036 (2)−0.0067 (18)−0.0096 (17)−0.0107 (17)
C30.071 (3)0.036 (2)0.0234 (18)−0.0055 (19)−0.0145 (17)−0.0016 (15)
C40.045 (2)0.074 (3)0.0259 (19)0.012 (2)−0.0014 (16)−0.0120 (18)
C50.0233 (16)0.0220 (16)0.0274 (16)0.0005 (13)−0.0061 (13)−0.0034 (13)
C60.0243 (16)0.0236 (17)0.0237 (16)0.0042 (13)−0.0051 (12)−0.0047 (13)
C70.0204 (15)0.0214 (16)0.0201 (15)0.0079 (13)−0.0053 (12)−0.0030 (12)
C80.0192 (15)0.0264 (17)0.0272 (17)0.0013 (13)−0.0067 (13)−0.0060 (13)
C90.0194 (15)0.0238 (17)0.0292 (17)0.0009 (13)−0.0044 (13)−0.0002 (13)
C100.0193 (15)0.0252 (17)0.0259 (16)0.0057 (13)−0.0058 (12)−0.0032 (13)
C110.0260 (16)0.0321 (19)0.0282 (17)0.0019 (14)0.0010 (13)−0.0006 (14)
C120.0363 (19)0.039 (2)0.0234 (17)0.0042 (16)−0.0022 (14)−0.0075 (15)
C130.0342 (18)0.036 (2)0.0311 (18)0.0057 (16)−0.0075 (15)−0.0140 (15)
C140.0243 (16)0.0266 (18)0.0314 (17)0.0037 (13)−0.0063 (13)−0.0067 (14)
C150.0218 (15)0.0233 (17)0.0245 (16)0.0063 (13)−0.0085 (12)−0.0050 (13)
C160.0174 (14)0.0195 (16)0.0248 (16)0.0052 (12)−0.0076 (12)−0.0033 (12)
C170.0222 (15)0.0194 (16)0.0262 (16)0.0017 (12)−0.0073 (13)−0.0027 (12)
C180.0203 (15)0.0131 (15)0.0287 (16)−0.0001 (12)−0.0082 (12)−0.0015 (12)
C190.0225 (15)0.0135 (15)0.0256 (16)−0.0043 (12)−0.0070 (12)−0.0002 (12)
C200.0243 (15)0.0196 (16)0.0298 (17)−0.0003 (13)−0.0091 (13)−0.0024 (13)
C210.0350 (18)0.0221 (17)0.0261 (17)−0.0008 (14)−0.0112 (14)0.0001 (13)
C220.0329 (18)0.0251 (18)0.0268 (17)−0.0037 (14)0.0005 (14)−0.0049 (13)
C230.0264 (16)0.0178 (16)0.0339 (18)−0.0011 (13)−0.0039 (14)−0.0033 (13)
C240.0234 (16)0.0157 (15)0.0296 (17)−0.0014 (12)−0.0048 (13)−0.0036 (12)
C250.0185 (15)0.0174 (16)0.0369 (18)0.0018 (12)−0.0059 (13)−0.0061 (13)
C260.0226 (15)0.0159 (15)0.0336 (17)0.0006 (12)−0.0133 (13)−0.0020 (13)
C270.0236 (15)0.0160 (15)0.0244 (16)−0.0013 (12)−0.0067 (12)−0.0015 (12)
C280.0356 (17)0.0216 (17)0.0274 (17)0.0017 (14)−0.0144 (14)−0.0053 (13)
C290.0202 (15)0.0253 (17)0.0233 (16)−0.0016 (13)−0.0037 (13)−0.0052 (13)
C300.0271 (17)0.0214 (17)0.0418 (19)0.0024 (13)−0.0131 (15)−0.0072 (14)
C310.0353 (19)0.033 (2)0.055 (2)0.0065 (16)−0.0183 (17)−0.0177 (17)
C320.039 (2)0.039 (2)0.054 (2)−0.0120 (17)−0.0097 (17)−0.0037 (18)
C330.039 (2)0.032 (2)0.069 (3)0.0048 (16)−0.0276 (19)−0.0207 (19)
O1—C71.388 (3)C14—C151.422 (4)
O1—C61.420 (3)C14—H140.9500
O2—C51.203 (3)C15—C161.436 (4)
O3—C51.324 (3)C16—C171.521 (4)
O3—C11.488 (3)C17—C181.521 (4)
O4—C271.373 (3)C17—H17A0.9900
O4—C281.413 (3)C17—H17B0.9900
O5—C291.210 (3)C18—C271.386 (4)
O6—C291.322 (3)C18—C191.426 (4)
O6—C301.484 (4)C19—C201.425 (4)
C1—C21.500 (5)C19—C241.435 (4)
C1—C41.508 (4)C20—C211.364 (4)
C1—C31.509 (4)C20—H200.9500
C2—H2A0.9800C21—C221.411 (4)
C2—H2B0.9800C21—H210.9500
C2—H2C0.9800C22—C231.360 (4)
C3—H3A0.9800C22—H220.9500
C3—H3B0.9800C23—C241.410 (4)
C3—H3C0.9800C23—H230.9500
C4—H4A0.9800C24—C251.407 (4)
C4—H4B0.9800C25—C261.364 (4)
C4—H4C0.9800C25—H250.9500
C5—C61.510 (4)C26—C271.404 (4)
C6—H6A0.9900C26—H260.9500
C6—H6B0.9900C28—C291.504 (4)
C7—C161.380 (4)C28—H28A0.9900
C7—C81.403 (4)C28—H28B0.9900
C8—C91.365 (4)C30—C331.504 (4)
C8—H80.9500C30—C311.513 (4)
C9—C101.416 (4)C30—C321.514 (5)
C9—H90.9500C31—H31A0.9800
C10—C111.418 (4)C31—H31B0.9800
C10—C151.423 (4)C31—H31C0.9800
C11—C121.366 (4)C32—H32A0.9800
C11—H110.9500C32—H32B0.9800
C12—C131.410 (5)C32—H32C0.9800
C12—H120.9500C33—H33A0.9800
C13—C141.368 (4)C33—H33B0.9800
C13—H130.9500C33—H33C0.9800
C7—O1—C6116.39 (19)C16—C17—H17A108.5
C5—O3—C1122.7 (2)C18—C17—H17A108.5
C27—O4—C28119.9 (2)C16—C17—H17B108.5
C29—O6—C30121.3 (2)C18—C17—H17B108.5
O3—C1—C2109.5 (3)H17A—C17—H17B107.5
O3—C1—C4101.9 (2)C27—C18—C19118.0 (2)
C2—C1—C4111.5 (3)C27—C18—C17118.4 (2)
O3—C1—C3110.8 (2)C19—C18—C17123.5 (2)
C2—C1—C3111.8 (3)C20—C19—C18123.2 (2)
C4—C1—C3110.9 (3)C20—C19—C24117.1 (3)
C1—C2—H2A109.5C18—C19—C24119.6 (2)
C1—C2—H2B109.5C21—C20—C19121.2 (3)
H2A—C2—H2B109.5C21—C20—H20119.4
C1—C2—H2C109.5C19—C20—H20119.4
H2A—C2—H2C109.5C20—C21—C22121.1 (3)
H2B—C2—H2C109.5C20—C21—H21119.4
C1—C3—H3A109.5C22—C21—H21119.4
C1—C3—H3B109.5C23—C22—C21119.4 (3)
H3A—C3—H3B109.5C23—C22—H22120.3
C1—C3—H3C109.5C21—C22—H22120.3
H3A—C3—H3C109.5C22—C23—C24121.4 (3)
H3B—C3—H3C109.5C22—C23—H23119.3
C1—C4—H4A109.5C24—C23—H23119.3
C1—C4—H4B109.5C25—C24—C23121.3 (3)
H4A—C4—H4B109.5C25—C24—C19119.0 (3)
C1—C4—H4C109.5C23—C24—C19119.7 (2)
H4A—C4—H4C109.5C26—C25—C24121.3 (2)
H4B—C4—H4C109.5C26—C25—H25119.3
O2—C5—O3126.5 (3)C24—C25—H25119.3
O2—C5—C6124.6 (3)C25—C26—C27119.4 (2)
O3—C5—C6108.9 (2)C25—C26—H26120.3
O1—C6—C5108.5 (2)C27—C26—H26120.3
O1—C6—H6A110.0O4—C27—C18114.3 (2)
C5—C6—H6A110.0O4—C27—C26123.0 (2)
O1—C6—H6B110.0C18—C27—C26122.6 (3)
C5—C6—H6B110.0O4—C28—C29115.5 (2)
H6A—C6—H6B108.4O4—C28—H28A108.4
C16—C7—O1117.9 (3)C29—C28—H28A108.4
C16—C7—C8122.8 (3)O4—C28—H28B108.4
O1—C7—C8119.0 (3)C29—C28—H28B108.4
C9—C8—C7119.8 (3)H28A—C28—H28B107.5
C9—C8—H8120.1O5—C29—O6126.4 (3)
C7—C8—H8120.1O5—C29—C28120.9 (3)
C8—C9—C10120.4 (3)O6—C29—C28112.6 (2)
C8—C9—H9119.8O6—C30—C33102.1 (2)
C10—C9—H9119.8O6—C30—C31109.2 (3)
C9—C10—C11120.2 (3)C33—C30—C31112.0 (3)
C9—C10—C15119.5 (3)O6—C30—C32110.0 (2)
C11—C10—C15120.2 (3)C33—C30—C32110.4 (3)
C12—C11—C10120.4 (3)C31—C30—C32112.7 (3)
C12—C11—H11119.8C30—C31—H31A109.5
C10—C11—H11119.8C30—C31—H31B109.5
C11—C12—C13120.1 (3)H31A—C31—H31B109.5
C11—C12—H12119.9C30—C31—H31C109.5
C13—C12—H12119.9H31A—C31—H31C109.5
C14—C13—C12120.5 (3)H31B—C31—H31C109.5
C14—C13—H13119.8C30—C32—H32A109.5
C12—C13—H13119.8C30—C32—H32B109.5
C13—C14—C15121.5 (3)H32A—C32—H32B109.5
C13—C14—H14119.2C30—C32—H32C109.5
C15—C14—H14119.2H32A—C32—H32C109.5
C14—C15—C10117.3 (3)H32B—C32—H32C109.5
C14—C15—C16123.1 (3)C30—C33—H33A109.5
C10—C15—C16119.6 (3)C30—C33—H33B109.5
C7—C16—C15117.7 (3)H33A—C33—H33B109.5
C7—C16—C17118.9 (2)C30—C33—H33C109.5
C15—C16—C17123.3 (3)H33A—C33—H33C109.5
C16—C17—C18114.9 (2)H33B—C33—H33C109.5
C5—O3—C1—C2−65.1 (3)C16—C17—C18—C27−66.1 (3)
C5—O3—C1—C4176.7 (3)C16—C17—C18—C19117.8 (3)
C5—O3—C1—C358.7 (4)C27—C18—C19—C20−175.8 (3)
C1—O3—C5—O20.0 (5)C17—C18—C19—C200.3 (4)
C1—O3—C5—C6178.6 (3)C27—C18—C19—C241.3 (4)
C7—O1—C6—C5163.0 (2)C17—C18—C19—C24177.3 (3)
O2—C5—C6—O1−26.4 (4)C18—C19—C20—C21176.7 (3)
O3—C5—C6—O1155.0 (2)C24—C19—C20—C21−0.3 (4)
C6—O1—C7—C16119.0 (3)C19—C20—C21—C221.2 (5)
C6—O1—C7—C8−67.8 (3)C20—C21—C22—C23−0.8 (5)
C16—C7—C8—C90.9 (4)C21—C22—C23—C24−0.6 (5)
O1—C7—C8—C9−172.0 (2)C22—C23—C24—C25−177.6 (3)
C7—C8—C9—C101.7 (4)C22—C23—C24—C191.4 (4)
C8—C9—C10—C11177.4 (2)C20—C19—C24—C25178.1 (3)
C8—C9—C10—C15−1.5 (4)C18—C19—C24—C250.9 (4)
C9—C10—C11—C12−178.7 (3)C20—C19—C24—C23−0.9 (4)
C15—C10—C11—C120.1 (4)C18—C19—C24—C23−178.1 (3)
C10—C11—C12—C131.3 (4)C23—C24—C25—C26177.4 (3)
C11—C12—C13—C14−1.3 (4)C19—C24—C25—C26−1.6 (4)
C12—C13—C14—C150.0 (4)C24—C25—C26—C270.2 (4)
C13—C14—C15—C101.4 (4)C28—O4—C27—C18176.4 (3)
C13—C14—C15—C16179.9 (2)C28—O4—C27—C26−6.9 (4)
C9—C10—C15—C14177.5 (2)C19—C18—C27—O4173.9 (2)
C11—C10—C15—C14−1.4 (4)C17—C18—C27—O4−2.3 (4)
C9—C10—C15—C16−1.1 (4)C19—C18—C27—C26−2.8 (4)
C11—C10—C15—C16180.0 (2)C17—C18—C27—C26−179.0 (3)
O1—C7—C16—C15169.5 (2)C25—C26—C27—O4−174.3 (3)
C8—C7—C16—C15−3.5 (4)C25—C26—C27—C182.1 (4)
O1—C7—C16—C17−7.1 (3)C27—O4—C28—C29−75.3 (3)
C8—C7—C16—C17179.9 (2)C30—O6—C29—O5−2.0 (4)
C14—C15—C16—C7−175.0 (2)C30—O6—C29—C28178.8 (2)
C10—C15—C16—C73.5 (3)O4—C28—C29—O5176.2 (2)
C14—C15—C16—C171.5 (4)O4—C28—C29—O6−4.5 (4)
C10—C15—C16—C17180.0 (2)C29—O6—C30—C33177.8 (2)
C7—C16—C17—C18−74.6 (3)C29—O6—C30—C31−63.6 (3)
C15—C16—C17—C18109.0 (3)C29—O6—C30—C3260.6 (3)
D—H···AD—HH···AD···AD—H···A
C4—H4B···O5i0.982.463.419 (3)166
Table 1

Hydrogen-bond geometry (Å, °)

D—H⋯AD—HH⋯ADAD—H⋯A
C4—H4B⋯O5i0.982.463.419 (3)166

Symmetry code: (i) .

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1.  A short history of SHELX.

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

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Authors:  Qamar Ali; Farooq Ibad; Muhammad Raza Shah; Donald Vanderveer
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2008-07-05

3.  Di-tert-butyl (1,1'-binaphthyl-2,2'-di-oxy)diacetate.

Authors:  Asra Mustafa; Muhammad Raza Shah; Maimoona Khatoon; Seik Weng Ng
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2009-03-28
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1.  Bis[3-(2H-benzotriazol-2-yl)-2-(prop-2-yn-yloxy)-5-(2,4,4-trimethyl-pentan-2-yl)phen-yl]methane.

Authors:  Tahir Qadri; Itrat Anis; M R Shah; Seik Weng Ng
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2011-02-26

2.  Dimethyl 2,2'-({2,2'-methyl-enebis[6-(2H-benzotriazol-2-yl)-4-(2,4,4-trimethyl-pentan-2-yl)-2,1-phenyl-ene]}di-oxy)diacetate.

Authors:  Tahir Qadri; Itrat Anis; M R Shah; Seik Weng Ng
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2011-02-26
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