Literature DB >> 26396897

Crystal structure of 10-[(3-oxo-3H-benzo[f]chromen-1-yl)meth-yl]-2-tri-fluoro-methyl-9a,10-di-hydro-benz[4,5]imidazo[1,2-a]pyrimidin-4(5aH)-one.

Shamantha Kumar1, K B Puttaraju2, K Shivashankar2, M Mahendra3.   

Abstract

In the title compound, C25H14F3N3O3, the dihedral angle between the planes of the benz[4,5]imidazo[1,2-a]pyrimidine unit (r.m.s. deviation = 0.035 Å) and the benzochromene ring system (r.m.s. deviation = 0.106 Å) is 72.82 (5)°. In the crystal, mol-ecules are linked by C-H⋯O inter-actions, generating [010] C(9) chains. A weak aromatic π-π stacking inter-action [centroid-centroid separation = 3.5376 (15) Å] is also observed.

Entities:  

Keywords:  benzimidazole; benzo­pyrimidine; chromene; crystal structure; fused-ring system; pyrimidinone; π–π stacking inter­actions

Year:  2015        PMID: 26396897      PMCID: PMC4555409          DOI: 10.1107/S2056989015014425

Source DB:  PubMed          Journal:  Acta Crystallogr E Crystallogr Commun


Related literature

For background to benzo­pyrimidine derivatives, see: Bodke et al. (2003 ▸); Moneam et al. (2004 ▸). For the synthesis of the title compound, see: Puttaraju et al. (2013 ▸). For a related structure, see: Chandra et al. (2013 ▸).

Experimental

Crystal data

C25H14F3N3O3 M = 461.39 Monoclinic, a = 9.7665 (5) Å b = 7.7950 (4) Å c = 27.0602 (16) Å β = 95.186 (5)° V = 2051.66 (19) Å3 Z = 4 Mo Kα radiation μ = 0.12 mm−1 T = 293 K 0.30 × 0.25 × 0.20 mm

Data collection

Bruker APEXII CCD area-detector diffractometer 9209 measured reflections 5020 independent reflections 2637 reflections with I > 2σ(I) R int = 0.033

Refinement

R[F 2 > 2σ(F 2)] = 0.057 wR(F 2) = 0.176 S = 1.00 5020 reflections 308 parameters H-atom parameters constrained Δρmax = 0.21 e Å−3 Δρmin = −0.19 e Å−3

Data collection: APEX2 (Bruker, 2009 ▸); cell refinement: SAINT (Bruker, 2009 ▸); 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 datablock(s) global, I. DOI: 10.1107/S2056989015014425/hb7467sup1.cif Structure factors: contains datablock(s) I. DOI: 10.1107/S2056989015014425/hb7467Isup2.hkl Click here for additional data file. Supporting information file. DOI: 10.1107/S2056989015014425/hb7467Isup3.cml Click here for additional data file. . DOI: 10.1107/S2056989015014425/hb7467fig1.tif Perspective diagram of the mol­ecule with 50% probability displacement ellipsoids. Click here for additional data file. b . DOI: 10.1107/S2056989015014425/hb7467fig2.tif Packing diagram of the mol­ecule viewed down the b axis. CCDC reference: 1416062 Additional supporting information: crystallographic information; 3D view; checkCIF report
C25H14F3N3O3F(000) = 944
Mr = 461.39Dx = 1.494 Mg m3
Monoclinic, P21/nMo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2ynCell parameters from 5020 reflections
a = 9.7665 (5) Åθ = 2.7–28.3°
b = 7.7950 (4) ŵ = 0.12 mm1
c = 27.0602 (16) ÅT = 293 K
β = 95.186 (5)°Bolck, yellow
V = 2051.66 (19) Å30.30 × 0.25 × 0.20 mm
Z = 4
Bruker APEXII CCD area-detector diffractometerRint = 0.033
ω and φ scansθmax = 28.3°, θmin = 2.7°
9209 measured reflectionsh = −11→12
5020 independent reflectionsk = −5→10
2637 reflections with I > 2σ(I)l = −27→36
Refinement on F2Secondary atom site location: difference Fourier map
Least-squares matrix: fullHydrogen site location: inferred from neighbouring sites
R[F2 > 2σ(F2)] = 0.057H-atom parameters constrained
wR(F2) = 0.176w = 1/[σ2(Fo2) + (0.0676P)2] where P = (Fo2 + 2Fc2)/3
S = 1.00(Δ/σ)max < 0.001
5020 reflectionsΔρmax = 0.21 e Å3
308 parametersΔρmin = −0.19 e Å3
0 restraintsExtinction correction: SHELXL, FC*=KFC[1+0.001XFC2Λ3/SIN(2Θ)]-1/4
Primary atom site location: structure-invariant direct methodsExtinction coefficient: 0.0030 (8)
Geometry. Bond distances, angles etc. have been calculated using the rounded fractional coordinates. All su's are estimated from the variances of the (full) variance-covariance matrix. The cell e.s.d.'s are taken into account in the estimation of distances, angles and torsion angles
Refinement. Refinement on F2 for ALL reflections except those flagged by the user for potential systematic errors. Weighted R-factors wR and all goodnesses of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The observed criterion of F2 > σ(F2) is used only for calculating -R-factor-obs 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
F16−0.06281 (18)0.8341 (3)0.10659 (8)0.1073 (9)
F17−0.01199 (16)0.6009 (3)0.07308 (6)0.0921 (8)
F18−0.14200 (15)0.5991 (3)0.13215 (7)0.1024 (9)
O110.20544 (19)0.5442 (3)0.27911 (6)0.0737 (8)
O230.4824 (2)1.3933 (2)0.15054 (8)0.0862 (9)
O240.62445 (19)1.3111 (2)0.09616 (7)0.0628 (7)
N10.31775 (19)0.6564 (2)0.21634 (7)0.0455 (6)
N30.44740 (17)0.7624 (2)0.16034 (6)0.0409 (6)
N140.21121 (18)0.7121 (2)0.13481 (7)0.0463 (6)
C20.3181 (2)0.7104 (3)0.16781 (8)0.0410 (7)
C40.5313 (2)0.7441 (3)0.20479 (8)0.0447 (7)
C50.4513 (2)0.6770 (3)0.24038 (9)0.0478 (8)
C60.5044 (3)0.6466 (3)0.28881 (9)0.0618 (9)
C70.6405 (3)0.6880 (4)0.29999 (10)0.0739 (11)
C80.7211 (3)0.7556 (4)0.26516 (11)0.0725 (11)
C90.6678 (2)0.7831 (3)0.21638 (10)0.0592 (9)
C100.1990 (3)0.5950 (3)0.23595 (9)0.0545 (8)
C120.0819 (3)0.6013 (3)0.20043 (9)0.0587 (9)
C130.0939 (2)0.6575 (3)0.15344 (9)0.0515 (8)
C15−0.0306 (3)0.6693 (4)0.11661 (10)0.0623 (10)
C190.4956 (2)0.7898 (3)0.11163 (8)0.0424 (7)
C200.5353 (2)0.9744 (3)0.10211 (8)0.0402 (7)
C210.4909 (2)1.0969 (3)0.13174 (9)0.0511 (8)
C220.5260 (3)1.2748 (3)0.12793 (10)0.0608 (10)
C250.6706 (3)1.1898 (3)0.06486 (9)0.0538 (8)
C260.6241 (2)1.0222 (3)0.06349 (8)0.0418 (7)
C270.6713 (2)0.9122 (3)0.02498 (8)0.0461 (7)
C280.7704 (2)0.9786 (4)−0.00588 (9)0.0598 (9)
C290.8182 (3)1.1485 (4)0.00084 (11)0.0763 (11)
C300.7689 (3)1.2528 (4)0.03478 (11)0.0730 (11)
C310.8178 (3)0.8749 (5)−0.04365 (11)0.0803 (13)
C320.7698 (3)0.7147 (5)−0.05239 (11)0.0787 (13)
C330.6709 (3)0.6507 (4)−0.02363 (10)0.0682 (10)
C340.6220 (3)0.7459 (3)0.01357 (9)0.0536 (8)
H60.451100.600900.312400.0740*
H70.679900.669900.332100.0890*
H80.812400.783200.274600.0870*
H90.722000.825800.192700.0710*
H12−0.003500.566700.209500.0700*
H19A0.423800.755400.086500.0510*
H19B0.574700.716800.108300.0510*
H210.434401.064600.156000.0610*
H290.885101.18930−0.018500.0920*
H300.799701.365400.038200.0880*
H310.883800.91840−0.063000.0960*
H320.802500.64810−0.077300.0950*
H330.636900.54050−0.029700.0820*
H340.554600.699400.031700.0640*
U11U22U33U12U13U23
F160.0900 (14)0.0943 (15)0.1297 (18)0.0138 (11)−0.0336 (12)0.0102 (13)
F170.0675 (10)0.1379 (17)0.0697 (11)−0.0180 (11)−0.0005 (8)−0.0251 (11)
F180.0503 (10)0.1613 (19)0.0968 (14)−0.0305 (11)0.0128 (9)0.0081 (13)
O110.0810 (13)0.0911 (15)0.0517 (11)−0.0130 (11)0.0211 (9)0.0169 (11)
O230.1251 (18)0.0480 (11)0.0847 (15)0.0111 (11)0.0045 (13)−0.0181 (11)
O240.0774 (13)0.0432 (9)0.0664 (12)−0.0115 (9)−0.0012 (10)0.0027 (9)
N10.0509 (11)0.0471 (11)0.0396 (10)−0.0036 (9)0.0106 (8)0.0015 (9)
N30.0404 (10)0.0434 (10)0.0397 (10)−0.0047 (9)0.0083 (7)−0.0002 (9)
N140.0429 (10)0.0540 (12)0.0426 (10)−0.0056 (10)0.0078 (8)0.0004 (10)
C20.0463 (13)0.0375 (12)0.0402 (12)−0.0020 (10)0.0101 (9)−0.0008 (10)
C40.0462 (13)0.0448 (13)0.0435 (12)0.0003 (11)0.0068 (10)−0.0018 (11)
C50.0510 (14)0.0490 (14)0.0434 (12)0.0005 (12)0.0048 (10)−0.0012 (12)
C60.0688 (17)0.0678 (18)0.0484 (14)0.0022 (14)0.0038 (12)0.0029 (14)
C70.076 (2)0.090 (2)0.0520 (16)0.0069 (17)−0.0137 (14)0.0015 (16)
C80.0582 (17)0.086 (2)0.0704 (19)0.0014 (16)−0.0095 (14)−0.0032 (17)
C90.0480 (14)0.0681 (17)0.0612 (16)−0.0014 (13)0.0038 (12)−0.0014 (15)
C100.0614 (15)0.0549 (15)0.0502 (14)−0.0069 (13)0.0210 (12)0.0048 (13)
C120.0488 (14)0.0646 (17)0.0651 (17)−0.0092 (13)0.0189 (12)0.0038 (14)
C130.0443 (13)0.0544 (15)0.0574 (15)−0.0057 (12)0.0136 (11)0.0026 (13)
C150.0518 (16)0.076 (2)0.0597 (17)−0.0108 (15)0.0080 (12)−0.0019 (16)
C190.0450 (12)0.0405 (12)0.0434 (12)−0.0041 (10)0.0128 (9)−0.0030 (10)
C200.0414 (12)0.0378 (11)0.0409 (11)−0.0025 (10)0.0016 (9)0.0000 (10)
C210.0587 (15)0.0443 (13)0.0506 (14)0.0006 (12)0.0070 (11)−0.0034 (12)
C220.0789 (19)0.0460 (15)0.0558 (16)0.0076 (14)−0.0039 (14)−0.0056 (13)
C250.0565 (15)0.0501 (14)0.0531 (14)−0.0076 (12)−0.0043 (11)0.0045 (13)
C260.0403 (11)0.0460 (13)0.0384 (11)−0.0023 (10)0.0006 (9)0.0052 (10)
C270.0388 (11)0.0601 (15)0.0391 (11)0.0036 (11)0.0018 (9)0.0043 (12)
C280.0456 (14)0.085 (2)0.0498 (14)−0.0011 (14)0.0095 (11)0.0087 (15)
C290.0701 (19)0.097 (2)0.0637 (19)−0.0268 (18)0.0162 (15)0.0151 (18)
C300.0746 (19)0.0704 (19)0.0729 (19)−0.0324 (16)0.0013 (15)0.0196 (17)
C310.0624 (18)0.122 (3)0.0605 (18)0.006 (2)0.0279 (14)0.005 (2)
C320.077 (2)0.108 (3)0.0533 (17)0.024 (2)0.0178 (15)−0.0043 (19)
C330.081 (2)0.0726 (19)0.0519 (15)0.0111 (15)0.0106 (14)−0.0084 (15)
C340.0634 (15)0.0552 (15)0.0435 (13)−0.0026 (13)0.0115 (11)−0.0066 (12)
F16—C151.344 (4)C21—C221.434 (3)
F17—C151.320 (3)C25—C261.383 (3)
F18—C151.320 (3)C25—C301.402 (4)
O11—C101.229 (3)C26—C271.456 (3)
O23—C221.207 (3)C27—C281.431 (3)
O24—C221.376 (3)C27—C341.407 (3)
O24—C251.372 (3)C28—C291.411 (4)
N1—C21.379 (3)C28—C311.414 (4)
N1—C51.413 (3)C29—C301.348 (4)
N1—C101.403 (3)C31—C321.347 (5)
N3—C21.359 (3)C32—C331.387 (4)
N3—C41.400 (3)C33—C341.371 (4)
N3—C191.455 (3)C6—H60.9300
N14—C21.311 (3)C7—H70.9300
N14—C131.361 (3)C8—H80.9300
C4—C51.396 (3)C9—H90.9300
C4—C91.376 (3)C12—H120.9300
C5—C61.386 (3)C19—H19A0.9700
C6—C71.375 (4)C19—H19B0.9700
C7—C81.386 (4)C21—H210.9300
C8—C91.391 (4)C29—H290.9300
C10—C121.427 (4)C30—H300.9300
C12—C131.360 (3)C31—H310.9300
C13—C151.504 (4)C32—H320.9300
C19—C201.518 (3)C33—H330.9300
C20—C211.344 (3)C34—H340.9300
C20—C261.465 (3)
F16···N142.878 (3)C32···C22iii3.386 (4)
F16···C27i3.310 (3)C32···C21iii3.502 (4)
F17···N142.763 (2)C33···C22iii3.320 (4)
F17···H30ii2.7100C33···O24iii3.352 (3)
F17···H29iii2.5900C33···C30viii3.572 (4)
F17···H32iv2.8100C34···C193.045 (3)
F18···H9i2.8200C34···C25iii3.439 (4)
F18···H122.4000C34···C26iii3.534 (3)
O11···C63.015 (3)C2···H213.0100
O11···C2v2.991 (3)C4···H212.9400
O11···N1v3.035 (3)C9···H19B3.0300
O11···N3v3.191 (3)C10···H63.0700
O11···C21v3.241 (3)C19···H92.9800
O11···C4v3.345 (3)C19···H342.3900
O11···C5v3.266 (3)C20···H342.8900
O23···N3vi2.912 (2)C22···H7vii3.0900
O23···C2vi3.006 (3)C22···H8vii2.9500
O23···N1vi3.237 (3)C25···H7vii3.0300
O23···C5vi3.321 (3)C27···H19B2.9500
O23···C19vi3.271 (3)C30···H33vi3.0500
O23···C4vi3.120 (3)C33···H30viii2.9900
O24···C33iii3.352 (3)C34···H19B2.6600
O11···H62.5200C34···H19A2.8900
O11···H21v2.3300H6···O112.5200
O23···H8vii2.8500H6···C103.0700
O24···H7vii2.8200H7···O24xi2.8200
N1···O23viii3.237 (3)H7···C22xi3.0900
N1···O11ix3.035 (3)H7···C25xi3.0300
N3···O23viii2.912 (2)H8···O23xi2.8500
N3···O11ix3.191 (3)H8···C22xi2.9500
N14···F172.763 (2)H9···F18x2.8200
N14···F162.878 (3)H9···C192.9800
N3···H212.3600H12···F182.4000
N14···H19A2.5700H19A···N142.5700
C2···O23viii3.006 (3)H19A···C342.8900
C2···O11ix2.991 (3)H19A···H342.0900
C4···C213.389 (3)H19B···C93.0300
C4···O23viii3.120 (3)H19B···C272.9500
C4···O11ix3.345 (3)H19B···C342.6600
C5···O11ix3.266 (3)H19B···H342.0700
C5···O23viii3.321 (3)H21···N32.3600
C6···O113.015 (3)H21···C23.0100
C9···C203.569 (3)H21···C42.9400
C19···C343.045 (3)H21···O11ix2.3300
C19···O23viii3.271 (3)H29···H312.4300
C20···C93.569 (3)H29···F17iii2.5900
C21···O11ix3.241 (3)H30···F17xii2.7100
C21···C43.389 (3)H30···C33vi2.9900
C21···C32iii3.502 (4)H31···H292.4300
C22···C33iii3.320 (4)H32···F17iv2.8100
C22···C32iii3.386 (4)H33···C30viii3.0500
C25···C34iii3.439 (4)H34···C192.3900
C26···C34iii3.534 (3)H34···C202.8900
C27···F16x3.310 (3)H34···H19A2.0900
C30···C33vi3.572 (4)H34···H19B2.0700
C22—O24—C25122.07 (19)C20—C26—C25115.8 (2)
C2—N1—C5108.78 (18)C20—C26—C27127.4 (2)
C2—N1—C10122.53 (19)C25—C26—C27116.8 (2)
C5—N1—C10128.7 (2)C26—C27—C28118.6 (2)
C2—N3—C4108.75 (17)C26—C27—C34125.1 (2)
C2—N3—C19124.04 (17)C28—C27—C34116.2 (2)
C4—N3—C19125.53 (16)C27—C28—C29119.9 (2)
C2—N14—C13112.93 (19)C27—C28—C31119.9 (3)
N1—C2—N3108.36 (17)C29—C28—C31120.3 (2)
N1—C2—N14125.54 (19)C28—C29—C30121.3 (3)
N3—C2—N14126.1 (2)C25—C30—C29119.3 (3)
N3—C4—C5108.08 (17)C28—C31—C32121.7 (3)
N3—C4—C9130.8 (2)C31—C32—C33118.9 (3)
C5—C4—C9121.1 (2)C32—C33—C34121.6 (3)
N1—C5—C4106.02 (19)C27—C34—C33121.7 (2)
N1—C5—C6131.8 (2)C5—C6—H6122.00
C4—C5—C6122.1 (2)C7—C6—H6122.00
C5—C6—C7116.1 (2)C6—C7—H7119.00
C6—C7—C8122.5 (3)C8—C7—H7119.00
C7—C8—C9121.1 (3)C7—C8—H8119.00
C4—C9—C8117.0 (2)C9—C8—H8119.00
O11—C10—N1119.8 (2)C4—C9—H9122.00
O11—C10—C12128.3 (3)C8—C9—H9121.00
N1—C10—C12111.9 (2)C10—C12—H12120.00
C10—C12—C13120.6 (2)C13—C12—H12120.00
N14—C13—C12126.4 (2)N3—C19—H19A109.00
N14—C13—C15113.1 (2)N3—C19—H19B109.00
C12—C13—C15120.4 (2)C20—C19—H19A109.00
F16—C15—F17104.7 (2)C20—C19—H19B109.00
F16—C15—F18106.0 (2)H19A—C19—H19B108.00
F16—C15—C13110.7 (2)C20—C21—H21118.00
F17—C15—F18107.5 (2)C22—C21—H21118.00
F17—C15—C13113.5 (2)C28—C29—H29119.00
F18—C15—C13113.8 (2)C30—C29—H29119.00
N3—C19—C20113.66 (18)C25—C30—H30120.00
C19—C20—C21118.11 (19)C29—C30—H30120.00
C19—C20—C26122.60 (19)C28—C31—H31119.00
C21—C20—C26119.3 (2)C32—C31—H31119.00
C20—C21—C22123.5 (2)C31—C32—H32121.00
O23—C22—O24117.3 (2)C33—C32—H32121.00
O23—C22—C21127.3 (3)C32—C33—H33119.00
O24—C22—C21115.4 (2)C34—C33—H33119.00
O24—C25—C26122.8 (2)C27—C34—H34119.00
O24—C25—C30113.4 (2)C33—C34—H34119.00
C26—C25—C30123.8 (2)
C22—O24—C25—C30178.8 (2)C10—C12—C13—C15−178.0 (2)
C25—O24—C22—O23−173.1 (2)C10—C12—C13—N140.0 (4)
C25—O24—C22—C219.3 (3)N14—C13—C15—F16−68.0 (3)
C22—O24—C25—C26−1.3 (4)C12—C13—C15—F18−9.0 (4)
C5—N1—C2—N14−178.9 (2)N14—C13—C15—F1749.4 (3)
C10—N1—C2—N3179.82 (18)N14—C13—C15—F18172.8 (2)
C10—N1—C2—N140.3 (3)C12—C13—C15—F16110.3 (3)
C5—N1—C2—N30.7 (2)C12—C13—C15—F17−132.3 (3)
C2—N1—C10—O11178.1 (2)N3—C19—C20—C26160.66 (18)
C2—N1—C10—C12−1.9 (3)N3—C19—C20—C21−16.8 (3)
C5—N1—C10—O11−3.0 (4)C19—C20—C21—C22177.3 (2)
C2—N1—C5—C4−0.2 (2)C21—C20—C26—C27−173.5 (2)
C2—N1—C5—C6178.2 (2)C19—C20—C26—C25−169.1 (2)
C10—N1—C5—C4−179.3 (2)C19—C20—C26—C279.1 (3)
C10—N1—C5—C6−0.9 (4)C26—C20—C21—C22−0.2 (3)
C5—N1—C10—C12177.1 (2)C21—C20—C26—C258.3 (3)
C19—N3—C2—N14−15.4 (3)C20—C21—C22—O23174.1 (3)
C2—N3—C4—C9−178.1 (2)C20—C21—C22—O24−8.6 (4)
C19—N3—C4—C5−164.93 (19)O24—C25—C26—C20−7.7 (3)
C2—N3—C4—C50.7 (2)O24—C25—C26—C27173.9 (2)
C2—N3—C19—C20116.5 (2)C30—C25—C26—C20172.2 (2)
C4—N3—C19—C20−80.0 (2)C30—C25—C26—C27−6.2 (4)
C19—N3—C2—N1165.06 (18)O24—C25—C30—C29−177.2 (3)
C19—N3—C4—C916.2 (4)C26—C25—C30—C292.9 (4)
C4—N3—C2—N1−0.8 (2)C20—C26—C27—C28−173.0 (2)
C4—N3—C2—N14178.7 (2)C20—C26—C27—C3410.4 (4)
C13—N14—C2—N3−178.0 (2)C25—C26—C27—C285.2 (3)
C2—N14—C13—C12−1.6 (3)C25—C26—C27—C34−171.4 (2)
C2—N14—C13—C15176.5 (2)C26—C27—C28—C29−1.2 (3)
C13—N14—C2—N11.5 (3)C26—C27—C28—C31−179.8 (2)
N3—C4—C9—C8177.6 (2)C34—C27—C28—C29175.7 (2)
C5—C4—C9—C8−1.2 (4)C34—C27—C28—C31−2.9 (3)
N3—C4—C5—N1−0.3 (2)C26—C27—C34—C33179.4 (2)
N3—C4—C5—C6−178.9 (2)C28—C27—C34—C332.7 (4)
C9—C4—C5—N1178.7 (2)C27—C28—C29—C30−2.3 (4)
C9—C4—C5—C60.1 (4)C31—C28—C29—C30176.3 (3)
C4—C5—C6—C70.6 (4)C27—C28—C31—C321.5 (4)
N1—C5—C6—C7−177.6 (2)C29—C28—C31—C32−177.1 (3)
C5—C6—C7—C8−0.3 (4)C28—C29—C30—C251.6 (4)
C6—C7—C8—C9−0.8 (5)C28—C31—C32—C330.3 (5)
C7—C8—C9—C41.5 (4)C31—C32—C33—C34−0.5 (5)
O11—C10—C12—C13−178.2 (3)C32—C33—C34—C27−1.1 (4)
N1—C10—C12—C131.7 (3)
D—H···AD—HH···AD···AD—H···A
C21—H21···O11ix0.932.333.241 (3)168
Table 1

Hydrogen-bond geometry (, )

DHA DHHA D A DHA
C21H21O11i 0.932.333.241(3)168

Symmetry code: (i) .

  4 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.  Microwave assisted synthesis of dihydrobenzo[4,5]imidazo[1,2-a]pyrimidin-4-ones; synthesis, in vitro antimicrobial and anticancer activities of novel coumarin substituted dihydrobenzo[4,5]imidazo[1,2-a]pyrimidin-4-ones.

Authors:  Kallimeledoddi B Puttaraju; Kalegowda Shivashankar; M Mahendra; Vijaykumar P Rasal; Ponnuru N Venkata Vivek; Khushboo Rai; Maibam Beebina Chanu
Journal:  Eur J Med Chem       Date:  2013-08-15       Impact factor: 6.514

3.  Structure validation in chemical crystallography.

Authors:  Anthony L Spek
Journal:  Acta Crystallogr D Biol Crystallogr       Date:  2009-01-20

4.  2-Tri-fluoro-methyl-10H-benzo[4,5]imidazo[1,2-a]pyrimidin-4-one.

Authors:  K B Puttaraju; K Shivashankar; E A Jithesh Babu; M Mahendra
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2013-09-12
  4 in total

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