PMCC PMCC

Search tips
Search criteria

Advanced
Results 1-25 (105842)

Clipboard (0)
None

Related Articles

1.  1-[3-(4-Chloro­phen­yl)-5-(4-meth­oxy­phen­yl)-4,5-dihydro-1H-pyrazol-1-yl]ethanone 
In the title compound, C18H17ClN2O2, the benzene rings form dihedral angles of 6.69 (6) and 74.88 (5)° with the 4,5-dihydro-1H-pyrazole ring. The benzene rings form a dihedral angle of 76.67 (5)° with each other. In the crystal, mol­ecules are linked via bifurcated (C,C)–H⋯O hydrogen bonds into chains along [010]. The crystal structure is further consolidated by C—H⋯π inter­actions.
doi:10.1107/S1600536812009439
PMCID: PMC3343987  PMID: 22589896
2.  (1S,3′S,3a′R,6′S)-6′-(2-Chloro­phen­yl)-3′-[(2R,3S)-1-(4-meth­oxy­phen­yl)-4-oxo-3-phenyl­azetidin-2-yl]-2-oxo-3′,3′a,4′,6′-tetra­hydro-2H,2′H-spiro­[ace­naphthyl­ene-1,1′-pyrrolo­[1,2-c][1,3]thia­zole]-2′,2′-dicarbo­nitrile 
The mol­ecular conformation of the title compound, C41H29ClN4O3S, is stabilized by intra­molecular C—H⋯O and C—H⋯Cl hydrogen bonds. The thia­zole ring adopts an envelope conformation with the N atom as the flap, while the pyrrolidine ring has a twisted conformation on the N—C bond involving the spiro C atom. The β la­ctam ring makes dihedral angles of 39.74 (15) and 16.21 (16)° with the mean planes of the thia­zole and pyrrolidine rings, respectively. The thia­zole ring mean plane makes dihedral angles of 23.79 (13) and 70.88 (13) ° with the pyrrolidine and cyclo­pentane rings, respectively, while the pyrrolidine ring makes a dihedral angle of 85.63 (13)° with the cyclo­pentane ring. The O atom attached to the β la­ctam ring deviates from its mean plane by 0.040 (2) Å, while the O atom attached to the cyclo­pentane ring deviates from its mean plane by 0.132 (2) Å. In the crystal, mol­ecules are linked by C—H⋯O hydrogen bonds, forming chains along [010], and C—H⋯π and π-π inter­actions [centroid-centroid distance = 3.6928 (17) Å].
doi:10.1107/S1600536813009276
PMCID: PMC3648279  PMID: 23723899
3.  6-(4-Chloro­phen­yl)-2-(4-meth­oxy­phen­yl)-6,7-dihydro-4H-pyrazolo­[5,1-c][1,4]oxazine 
In the title compound, C19H17ClN2O2, the pyrazole ring is almost planar with a maximum deviation of 0.009 (3) Å and makes a dihedral angle of 8.96 (9)° with the oxazine ring. The dihedral angles between the pyrazole ring and the chlorine- and meth­oxy-substituted benzene rings are 50.95 (8) and 13.24 (9)°, respectively. An inter­molecular C—H⋯N hydrogen bond links the mol­ecules into infinite chains along the a axis. The crystal structure is further stabilized by C—H⋯π inter­actions.
doi:10.1107/S1600536811025906
PMCID: PMC3212334  PMID: 22090991
4.  N-[2-({[1-(4-Chloro­phen­yl)-1H-pyrazol-3-yl]­oxy}meth­yl)phen­yl]-N-meth­oxy­hydrazinecarboxamide 
In the title compound, C18H18ClN5O3, the hydrazinecarboxamide N—N—C(O)—N unit is nearly planar [maximum deviation = 0.074 (2) Å] and is inclined at a dihedral angle of 57.43 (7)° with respect to the plane of the attached benzene ring. The chloro­phenyl group makes dihedral angles of 19.71 (7) and 34.07 (6)° with the pyrazole and benzene rings, respectively. In the crystal, pairs of N—H⋯O hydrogen bonds link the mol­ecules into inversion dimers that are further linked into chains along the a-axis direction by N—H⋯N hydrogen bonds. In addition, π–π stacking inter­actions are observed between benzene rings [centroid–centroid distance = 3.680 (1) Å].
doi:10.1107/S1600536812038214
PMCID: PMC3470263  PMID: 23125707
5.  Crystal structure of methyl 6-meth­oxy-11-(4-meth­oxy­phen­yl)-16-methyl-14-phenyl-8,12-dioxa-14,15-di­aza­tetra­cyclo­[8.7.0.02,7.013,17]hepta­deca-2(7),3,5,13(17),15-penta­ene-10-carboxyl­ate 
In the title compound, the pyran and pyrone rings adopt slightly distorted half-chair and envelope conformations, respectively. In the crystal, C—H⋯O and π–π inter­actions connect the mol­ecules, forming double layers that stack along the c-axis direction.
In the title compound, C30H28N2O6, the pyran ring adopts a slightly distorted half-chair conformation and the pyrone ring adopts an envelope conformation, with the C atom bearing the carboxyl­ate group as the flap. The pyrazole ring [maximum deviation = 0.002 (2) Å] forms a dihedral angle of 13.2 (1)° with the attached benzene ring. The near-planar atoms of the pyran ring and the pyrazole ring are close to coplanar, the dihedral angles between their mean planes being 6.4 (1)°. The dihedral angle between the pyrone ring and the benzene ring of the chromene unit is 10.7 (1)°. The mol­ecular conformation is stabilized by an intra­molecular C—H⋯O hydrogen bond, which generates an S(6) ring motif. In the crystal, C—H⋯O inter­actions generate supra­molecular chains propagating in [100] and these are connected into double layers that stack along the c-axis direction by weak π–π inter­actions between pyrazole rings [centroid–centroid distance = 3.801 (1) Å].
doi:10.1107/S1600536814017929
PMCID: PMC4186142  PMID: 25309159
crystal structure; conformation; crystal packing; chromene
6.  4′-(4-Chloro­phen­yl)-3′-(4-meth­oxy­phen­yl)-3,4-dihydro-1H,4′H-spiro­[acridine-2,5′-isoxazol]-1-one 
In the title compound, C28H21ClN2O3, the quinoline ring system is essentially planar with a maximum deviation of 0.0436 (17) Å. The isoxazole and cyclo­hexane rings adopt envelope conformations. The isoxazole ring is almost orthogonal to both the quinoline ring system and the cyclo­hexane ring, making dihedral angles of 85.75 (8) and 81.46 (9) °, respectively. The O atom deviates signifigantly from the six-membered carbocyclic ring by 0.3947 (16) Å. In the crystal, mol­ecules are linked into inversion dimers via pairs of C—H⋯O inter­actions, resulting in R 2 2(24) ring motifs.
doi:10.1107/S1600536812042523
PMCID: PMC3515270  PMID: 23284490
7.  3-(4-Amino­phen­yl)-5-(4-meth­oxy­phen­yl)-4,5-di­hydro-1H-pyrazole-1-carbo­thio­amide 
In the mol­ecule of title pyrazoline derivative, C17H18N4OS, the pyrazole ring adopts an envelope conformation with the flap atom, which bears the meth­oxy­phenyl substituent, displaced by 0.0750 (12) Å from the plane through the other ring atoms. The two substituted benzene rings make a dihedral angle of 70.59 (6)°. The meth­oxy group is twisted slightly with respect to the attached benzene ring [Cmeth­yl—O—C—C torsion angle = −8.84 (15)°]. An intra­molecular N—H⋯N hydrogen bond occurs. In the crystal, the pyrazoline mol­ecules are linked by N—H⋯O and N—H⋯S hydrogen bonds into zigzag layers parallel to the bc plane and stacked along the a axis by π–π inter­actions with centroid–centroid distances of 3.4690 (7) and 3.5792 (7) Å. C—H⋯π inter­actions are also present.
doi:10.1107/S1600536813018096
PMCID: PMC3793732  PMID: 24109319
8.  3-(4-Chloro­phen­yl)-5-(4-eth­oxy­phen­yl)-4,5-dihydro-1H-pyrazole-1-carbothio­amide ethanol monosolvate 
The asymmetric unit of the title compound, C18H18ClN3OS·C2H5OH, comprises a pyrazoline derivative and an ethanol solvent mol­ecule. In the mol­ecule of the pyrazoline derivative, the pyrazole ring adopts an envelope conformation with the C atom bearing the eth­oxy­phenyl substituent as the flap. The dihedral angle between the benzene rings is 74.22 (7)°. The eth­oxy group is coplanar with the attached benzene ring [C—O—C—Cmeth­yl = 175.50 (11)° and r.m.s. deviation = 0.0459 (1) Å for the nine non-H atoms]. In the crystal, the pyrazoline mol­ecules are linked by N—H⋯Oeth­oxy hydrogen bonds into chains along the c axis and are further linked with the solvent ethanol mol­ecules by N—H⋯Oethanol and Oethanol—H⋯S hydrogen bonds. C—H⋯π inter­actions are also present.
doi:10.1107/S1600536813005369
PMCID: PMC3629506  PMID: 23634024
9.  4-(4-Chloro­phen­yl)-3-cyano-7-(4-meth­oxy­phen­yl)-5-oxo-5,6,7,8-tetra­hydro-4H-chromen-2-aminium methano­late 
In the cation of the title organic ion pair compound, C23H20ClN2O3 +·CH3O−, the cyclo­hexyl ring shows a half-boat conformation and the dihedral angles between two benzene rings and the pyran ring are 83.14 (7) and 73.18 (9)°. In the crystal, centrosymmetrically related cations are linked into a dimer by pairs of N—H⋯N hydrogen bonds, generating an R 2 2(12) ring motif. The anion inter­acts with the dimer through an N—H⋯O hydrogen bond. π–π inter­actions between pyran rings of adjacent dimers, with a centroid–centroid distance of 3.861 (2) Å, are also observed.
doi:10.1107/S1600536812007088
PMCID: PMC3297885  PMID: 22412688
10.  Ethyl 1-(4-chloro­phen­yl)-3-[1-(4-meth­oxy­phen­yl)-4-oxo-3-phenyl­azetidin-2-yl]-2-nitro-2,3,10,10a-tetra­hydro-1H,5H-pyr­rolo[1,2-b]isoquinoline-10a-carboxyl­ate 
In the title compound, C37H34ClN3O6, the pyrrolidine and piperidine rings adopt envelope and boat conformations, respectively. The β-lactam ring is planar and forms dihedral angles of 21.3 (2) and 73.9 (2)°, respectively, with the attached methoxy­phenyl and phenyl rings. Intra­molecular C—H⋯O and C—H⋯N hydrogen bonds are observed. Centrosym­metrically related mol­ecules are linked together by weak C—H⋯O hydrogen bonds to form dimers.
doi:10.1107/S1600536808030961
PMCID: PMC2959299  PMID: 21201234
11.  1-{3-(4-Chloro­phen­yl)-5-[4-(propan-2-yl)phen­yl]-4,5-di­hydro-1H-pyrazol-1-yl}butan-1-one 
In the title compound, C22H25ClN2O, the pyrazole ring exhibits an envelope conformation with the methine C atom as the flap. The benzene rings are twisted by 3.3 (5) and 84.6 (5)° from the pyrazole mean plane, and are inclined to each other by 81.4 (4)°. In the crystal, pairs of weak C—H⋯O hydrogen bonds form centrosymmetric dimers with an R 2 2(16) graph-set motif. C—H⋯π inter­actions link the dimers into columns propagating in [100].
doi:10.1107/S1600536814013063
PMCID: PMC4120539  PMID: 25161554
12.  Bis{benzyl 2-[4-(4-meth­oxy­phen­yl)butan-2-yl­idene]hydrazinecarbodithio­ato-κ2 N 2,S}nickel(II) 
The complete mol­ecule of the title complex, [Ni(C19H21N2OS2)2], is generated by the application of twofold symmetry. The NiII atom is N,S-chelated by two hydrazinecarbodithio­ate ligands, which provide an N2S2 donor set that defines a distorted square-planar geometry, the S atoms being approximately cis. The conformation of the chelate ring is an envelope with the NiII atom being the flap atom. The dihedral angle between the least-squares planes through the chelate rings = 30.10 (6)°. Supra­molecular chains propagated by glide symmetry along the c axis and mediated by C—H⋯N contacts feature in the crystal packing.
doi:10.1107/S1600536812019289
PMCID: PMC3379070  PMID: 22719291
13.  4-{2-[2-(4-Chloro­benzyl­idene)hydrazinyl­idene]-3,6-dihydro-2H-1,3,4-thia­diazin-5-yl}-3-(4-meth­oxy­phen­yl)sydnone 
The title compound, C19H15ClN6O3S, exists in trans and cis configurations with respect to the acyclic C=N bonds. The 3,6-dihydro-2H-1,3,4-thia­diazine ring adopts a half-boat conformation. The sydnone ring is approximately planar [maximum deviation = 0.013 (1) Å] and forms dihedral angles of 34.76 (4) and 48.67 (4)° with the benzene rings. An intra­molecular C—H⋯O hydrogen bond stabilizes the mol­ecular structure and forms an S(6) ring motif. In the crystal packing, inter­molecular N—H⋯N hydrogen bonds link centrosymmetrically related mol­ecules into dimers, generating R 2 2(8) ring motifs. The dimers are then linked into a three-dimensional network by inter­molecular C—H⋯O and C—H⋯Cl hydrogen bonds, and by C—H⋯π inter­actions. Further stabilization is provided by π–π inter­actions involving the sydnone rings, with centroid–centroid separations of 3.4198 (5) Å.
doi:10.1107/S1600536811013900
PMCID: PMC3089192  PMID: 21754480
14.  3-(4-Chloro­phen­oxy)-1-(4-meth­oxy­phen­yl)-4-(4-nitro­phen­yl)azetidin-2-one 
In the title compound, C22H17ClN2O5, the nearly planar four-membered β-lactam ring [maximum deviation of 0.016 (1) for the N atom] makes dihedral angles of 53.07 (9), 73.19 (9) and 6.61 (9)° with the chloro-, nitro- and meth­oxy­benzene rings, respectively. The crystal structure is stabilized by C—H⋯O hydrogen bonds, a weak C—H⋯π inter­action and a π–π stacking inter­action [centroid–centroid distance = 3.6513 (8) Å] between the meth­oxy­benzene rings of inversion-related mol­ecules.
doi:10.1107/S1600536811013018
PMCID: PMC3089293  PMID: 21754420
15.  Crystal structure of 5-(4-benzyl­oxyphen­yl)-3-(4-meth­oxy­phen­yl)-6-methyl­cyclo­hex-2-en-1-one 
5-(4-Benzyl­oxyphen­yl)-3-(4-meth­oxy­phen­yl)-6-methyl­cyclo­hex-2-en-1-one crystallized with two independent mol­ecules in the asymmetric unit. The cyclo­hexene ring adopts an envelope conformation in both mol­ecules, with the C atom to which is attached the central benzene ring as the flap. The crystal packing, is stabilized by C—H⋯π inter­actions.
The title compound, C27H26O3, crystallized with two independent mol­ecules (A and B) in the asymmetric unit. In mol­ecule A, the plane of the central benzene ring forms dihedral angles of 75.78 (14) and 52.75 (16)° with that of the terminal benzene rings, and the dihedral angle between the planes of the terminal benzene rings is 51.49 (17)°. The corresponding values for mol­ecule B are 75.18 (14), 58.11 (16) and 47.91 (16)°, respectively. The cyclo­hexene ring adopts an envelope conformation in both mol­ecules, with the C atom to which is attached the central benzene ring as the flap. The crystal packing, is stabilized by C—H⋯π inter­actions.
doi:10.1107/S2056989014025390
PMCID: PMC4331857
crystal structure; cyclo­hexene; cyclcohexen-1-one
16.  2-[6-(4-Chloro­phen­yl)imidazo[2,1-b][1,3]thia­zol-2-yl]-N′-[(E)-4-meth­oxy­benzyl­idene]acetohydrazide 
In the imidazo[2,1-b][1,3]thia­zole group of the title compound, C21H17ClN4O2S, the dihedral angle between the thia­zole and imidazole rings is 1.9 (2)°. The mean plane of this group makes dihedral angles of 5.5 (2) and 39.9 (2)° with the benzene rings of the chloro­phenyl and meth­oxy­phenyl groups, respectively. The dihedral angle between these two benzene rings is 34.4 (2)°. In the crystal, mol­ecules are connected to each other by inter­molecular N—H⋯O hydrogen bonds along the b axis, generating a C(4) chain. Weak C—H⋯π inter­actions also occur.
doi:10.1107/S1600536810052359
PMCID: PMC3050215  PMID: 21522689
17.  Methyl (2Z)-2-(2-fluoro-4-meth­oxy­benzyl­idene)-5-(4-meth­oxy­phen­yl)-7-methyl-3-oxo-2,3-dihydro-5H-[1,3]thia­zolo[3,2-a]pyrimidine-6-carboxyl­ate 
The asymmetric unit of the title compound, C24H21FN2O5S, consists of two crystallographically independent mol­ecules. In each mol­ecule, the central dihydro­pyrimidine ring is significantly puckered and adopts a conformation which is best described as an inter­mediate between a boat and a screw boat. The least-squares planes of the dihydro­pyrimidine rings are almost coplanar with the fluoro-substituted benzene rings, making dihedral angles of 9.04 (7) and 6.68 (7)°, and almost perpendicular to the meth­oxy-substituted benzene rings with dihedral angles of 89.23 (7) and 88.30 (7)°. In the mol­ecular structure, S(6) ring motifs are formed by C—H⋯O and C—H⋯S hydrogen bonds. In the crystal, mol­ecules are linked into a three-dimensional network by inter­molecular C—H⋯O and C—H⋯F hydrogen bonds. The crystal structure is further stabilized by a C—H⋯π inter­action.
doi:10.1107/S1600536811025141
PMCID: PMC3212305  PMID: 22090962
18.  3-(4-Chloro­phen­yl)-4-(4-methoxyphen­yl)-6-(phenyl­selenylmeth­yl)-2,3,3a,3b,4,5,5a,6,1′′,2′′,3′′,4′′-do­deca­hydro­azeto[2′,3′:3,4]pyrrolo[1,2-b]isoxazole-2-spiro-2′′-naphthalene-5,1′′-dione 
In the title compound, C36H31ClN2O4Se, the four-membered β-lactam ring is fused to a pyrrolidine ring. The central five-membered ring of the fused tricyclic system exhibits an envelope conformation with the N atom as the flap, while the other five-membered ring exhibits a twist conformation. The chloro­phenyl ring is almost perpendicular to the pyrrolidine ring, making a dihedral angle of 73.45 (1)°. The crystal structure is stabilized by weak inter­molecular C—H⋯O inter­actions and the packing is further enhanced by C—H ⋯N inter­actions and π–π inter­actions between benzene rings of tetra­lone groups in mol­ecules related by an inversion center, with a centroid–centroid separation of 3.8923 (2) Å.
doi:10.1107/S1600536808006570
PMCID: PMC2960925  PMID: 21202107
19.  1-{3-(4-Chloro­phen­yl)-5-[4-(propan-2-yl)phen­yl]-4,5-di­hydro-1H-pyrazol-1-yl}propan-1-one 
In the title compound, C21H23ClN2O, the dihedral angle between the benzene rings is 83.2 (6)°, while the mean plane of the pyrazole ring [r.m.s. deviation = 0.043 (1) Å] makes dihedral angles of 3.4 (3) and 86.2 (1)° with the benzene rings. In the crystal, a pair of weak C—H⋯O inter­actions between the benzene ring and the propan-1-one group link the mol­ecules into an inversion dimer with an R 2 2(16) graph-set motif. In addition, a weak π–π stacking inter­action [centroid–centroid distance = 3.959 (4) Å] connects the dimers into a tape running along [201].
doi:10.1107/S1600536814013075
PMCID: PMC4120579  PMID: 25161555
20.  1-[5-(4-Bromo­phen­yl)-3-(4-fluoro­phen­yl)-4,5-dihydro-1H-pyrazol-1-yl]butan-1-one 
In the title compound, C19H18BrFN2O, the benzene rings form dihedral angles of 5.38 (7) and 85.48 (7)° with the mean plane of the 4,5-dihydro-1H-pyrazole ring (r.m.s. deviation = 0.0849 Å), which approximates to an envelope conformation with the –CH2– group as the flap. The dihedral angle between the benzene rings is 82.86 (7)°. In the crystal, C—H⋯F and C—H⋯O hydrogen bonds link the mol­ecules to form inversion dimers and together these generate chains along [011]. The crystal packing also features C—H⋯π inter­actions.
doi:10.1107/S1600536812034368
PMCID: PMC3435682  PMID: 22969553
21.  Dimethyl 4-[3-(4-meth­oxy­phen­yl)-1-phenyl-1H-pyrazol-4-yl]-2,6-dimethyl-1,4-dihydro­pyridine-3,5-dicarboxyl­ate dihydrate 
In the title compound, C27H27N3O5·2H2O, the dihydro­pyridine ring adopts a flattened boat conformation. The central pyrazole ring is essentially planar [maximum deviation of 0.003 (1) Å] and makes dihedral angles of 50.42 (6) and 26.44 (6)° with the benzene rings. In the crystal, mol­ecules are linked via N—H⋯O, O—H⋯O, O—H⋯N and C—H⋯O hydrogen bonds into two-dimensional networks parallel to the bc plane. The crystal structure is further consolidated by weak C—H⋯π inter­actions.
doi:10.1107/S1600536812027936
PMCID: PMC3394006  PMID: 22798871
22.  2-[3,5-Bis(4-meth­oxy­phen­yl)-4,5-di­hydro-1H-pyrazol-1-yl]-4,6-bis­(4-meth­oxy­phen­yl)pyrimidine 
In the title compound, C35H32N4O4, the pyrazole ring forms a dihedral angle of 15.04 (8)° with the adjacent pyrimidine ring. The pyrimidine ring forms dihedral angles of 9.95 (8) and 1.86 (7)° with its adjacent meth­oxy-substituted benzene rings, whereas the equivalent angles are 80.24 (9) and 11.55 (9)° for the pyrazole ring and its adjacent benzene rings. The crystal packing features π–π inter­actions, the centroid–centroid distance between the pyrimidine and methoxyphenyl rings being 3.604 (1) Å. The pyrazole ring is nearly planar, with a maximum deviation of 0.020 (3) Å for the –CH2– carbon.
doi:10.1107/S1600536812030516
PMCID: PMC3414322  PMID: 22904855
23.  Ethyl 1-(butan-2-yl)-2-(2-meth­oxy­phen­yl)-1H-benzimidazole-5-carboxyl­ate 
In the title compound, C21H24N2O3, the mean planes of the benzene ring and the benzimidazole ring system form a dihedral angle of 69.94 (7)°. The ethyl group atoms of the ethano­ate fragment are disordered over two sets of sites, with refined occupancies of 0.742 (6) and 0.258 (6). In the crystal, there are weak C—H⋯N hydrogen bonds which connect mol­ecules into chains along the b axis. A weak inter­molecular C—H⋯π inter­action is also observed.
doi:10.1107/S1600536811046095
PMCID: PMC3238892  PMID: 22199745
24.  3-(4-Chloro­phen­yl)-5-(thio­phen-2-yl)-4,5-dihydro-1H-pyrazole-1-carbothio­amide 
In the title pyrazoline derivative, C14H12ClN3S2, the thiophene ring is disordered over two orientations with a refined site-occupancy ratio of 0.832 (4):0.168 (4). The pyrazoline ring adopts an envelope conformation with the C atom linking the thiophene ring at the flap. The dihedral angles between the benzene ring and the major and minor components of the thiophene ring are 88.6 (3) and 85.6 (15)°, respectively while the dihedral angle between the disorder components of the ring is 3.1 (16)°. The mean plane of the pyrazoline ring makes dihedral angles of 11.86 (13), 80.1 (3) and 83.0 (15)°, respectively, with the benzene ring, and the major and minor components of the thiophene ring. An intra­molecular N(amide)—H⋯N(pyrazoline) hydrogen bond generates an S(5) ring motif. In the crystal, mol­ecules are linked by weak C—H⋯S and N(amide)—H⋯S inter­actions into a tape along [10]. C—H⋯π inter­actions are also observed.
doi:10.1107/S1600536811054754
PMCID: PMC3274952  PMID: 22346905
25.  (E)-3-(4-Meth­oxy­phen­yl)-3-[3-(4-meth­oxy­phen­yl)-1H-pyrazol-1-yl]prop-2-enal 
In the title mol­ecule, C20H18N2O3, the pyrazole ring forms a dihedral angle of 2.2 (1)° with its meth­oxy­phenyl substituent and a dihedral angle of 67.2 (1)° with the benzene substituent on the propenal unit. In the crystal, mol­ecules are connected by weak C—H⋯O hydrogen bonds, forming R 2 2(26) and R 2 2(28) cyclic dimers that lie about crystallographic inversion centres. These dimers are further linked through C—H⋯O and C—H⋯N hydrogen bonds, forming C(8), C(9), C(10) and C(16) chain motifs. These primary motifs are further linked to form secondary C 2 2(15) chains and R 2 2(18) rings.
doi:10.1107/S1600536813007678
PMCID: PMC3629636  PMID: 23634123

Results 1-25 (105842)