scholarly journals 3,3′-Bis(chloromethyl)-4,4′-diethoxy-1,1′-biphenyl

2014 ◽  
Vol 70 (4) ◽  
pp. o387-o387
Author(s):  
Hager Trad ◽  
Mohamed Salah Belkhiria ◽  
Mustapha Majdoub
Keyword(s):  
Title Compound ◽  
Crystal Packing ◽  
The Other ◽  
Van Der Waals Interactions ◽  
Inversion Center ◽  
Asymmetric Unit ◽  
Atomic Displacements ◽  
Compound C ◽  
The Mean ◽  
Cl Atoms

The asymmetric unit of the title compound, C18H20Cl2O2, consists of a half-molecule, the other half being generated by an inversion center, located at the mid-point of the benzene–benzene bond. Except for the two Cl atoms, all other atoms of the compound are nearly coplanar, with the atomic displacements from the molecular mean plane ranging from 0.0037 (19) to 0.071 (2) Å. The two Cl atoms are intranspositions and are displaced with respect to the mean plane by 1.687 (2) and −1.693 (3) Å. The crystal packing is governed by van der Waals interactions.

scholarly journals 1,4-Bis(hexyloxy)benzene

2013 ◽  
Vol 69 (11) ◽  
pp. o1721-o1721
Author(s):  
Hua Cheng
Keyword(s):  
Benzene Ring ◽  
Title Compound ◽  
Alkyl Chain ◽  
Crystal Packing ◽  
Maximum Deviation ◽  
Inversion Center ◽  
Asymmetric Unit ◽  
Compound C ◽  
Intermolecular Contacts ◽  
The Mean

The asymmetric unit of the title compound, C18H30O2, contains one half-molecule situated on an inversion center. The alkyl chain adopts a fully extended all-transconformation. The C atoms of the alkyl chain are almost coplanar, with a maximum deviation of 0.042 (6) Å from the mean plane,which is inclined to the central benzene ring by 6.80 (9)°. The crystal packing exhibits no short intermolecular contacts.

scholarly journals 2-(1,3-Benzodioxol-5-yl)-1H-benzimidazole

2014 ◽  
Vol 70 (2) ◽  
pp. o157-o157
Author(s):  
Nadir Ghichi ◽  
Mohamed Amine Benaouida ◽  
Ali Benosmane ◽  
Ali Benboudiaf ◽  
Hocine Merazig
Keyword(s):  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Title Compound ◽  
Ring System ◽  
The Other ◽  
Dihedral Angles ◽  
Asymmetric Unit ◽  
Compound C ◽  
The Mean ◽  
Independent Molecules

The asymmetric unit of the title compound, C14H10N2O2, contains two independent molecules. In each molecule, the benzodioxole ring system displays an envelope conformation, with the methylene C atom located at the flap deviating by 0.081 (2) and 0.230 (2) Å from the mean plane formed by the other atoms. The dihedral angles between the benzoimidazole ring system (all atoms) and the benzodioxole benzene ring are 15.35 (6) and 10.99 (7)°. In the crystal, molecules are linked by N—H...N hydrogen bonds into chains running along the [101].

scholarly journals Ethyl (3-nitro-2-oxo-1,2-dihydropyridin-1-yl)acetate

2006 ◽  
Vol 62 (7) ◽  
pp. o2714-o2716 ◽  
Author(s):  
N. David Karis ◽  
Wendy A. Loughlin ◽  
Ian D. Jenkins ◽  
Peter C. Healy
Keyword(s):  
Crystal Structure ◽  
Title Compound ◽  
Van Der Waals ◽  
The Other ◽  
Van Der Waals Interactions ◽  
Asymmetric Unit ◽  
Π Interactions ◽  
Compound C ◽  
Independent Molecules

The title compound, C9H10N2O5, crystallizes with two crystallographically independent molecules in the asymmetric unit. In the crystal structure, the nitropyridone rings are connected by weak C—H...O interactions, forming sheet-like arrays, which are in turn linked by C—H...π and π–π interactions between the nitropyridone rings on one side, and by C—H...O and van der Waals interactions between the ester groups on the other.

scholarly journals Crystal structure of hexamethyl 4,4′,4′′,4′′′,4′′′',4′′′''-[(1,3,5,2λ5,4λ5,6λ5-triazatriphosphinine-2,2,4,4,6,6-hexayl)hexakis(oxy)]hexabenzoate

2017 ◽  
Vol 73 (8) ◽  
pp. 1252-1254
Author(s):  
Jing Zhu ◽  
Guo Hui Hou ◽  
Qian Li ◽  
Fu Wei Zheng ◽  
Hong Liang Wei ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Title Compound ◽  
Crystal Packing ◽  
Van Der Waals Interactions ◽  
Dihedral Angles ◽  
Boat Conformation ◽  
Compound C ◽  
Benzene Rings ◽  
The Mean ◽  
Twist Boat

The title compound, C48H42N3O18P3, achieved in a two-step synthesis, comprises a cyclotriphosphazene core and six 4-methoxycarbonylphenoxy groups. Each P atom is attached to two substituents located up and down with respect to the plane of the phosphazene ring, the central P3N3 ring having a twist-boat conformation. The three O/P/O planes and five of the six benzene rings are nearly perpendicular to the mean plane through the phosphazene ring [dihedral angles = 82.98 (8)–88.92 (8)°], while the remaining benzene ring forms a dihedral angle of 25.72 (7)°. The crystal packing is stabilized by van der Waals interactions only.

scholarly journals 1,1′-(Diphosphene-1,2-diyl)bis(2,2,6,6-tetramethylpiperidine)

IUCrData ◽  
2017 ◽  
Vol 2 (6) ◽  
Author(s):  
Martha Höhne ◽  
Anke Spannenberg ◽  
Bernd H. Müller ◽  
Uwe Rosenthal
Keyword(s):  
Title Compound ◽  
Crystal Packing ◽  
Van Der Waals ◽  
Van Der Waals Interactions ◽  
Asymmetric Unit ◽  
Triclinic Space Group ◽  
Space Group ◽  
Compound C ◽  
Independent Molecules

The title compound, C18H36N2P2, crystallizes in the triclinic space groupP-1 with two independent molecules in the asymmetric unit. Both molecules adopt atransconfiguration of the tetramethylpiperidine units along the P=P axis. The crystal packing is stabilized only by van der Waals interactions.

scholarly journals Crystal structure of bis(4-allyl-2-methoxyphenyl) terephthalate

2014 ◽  
Vol 70 (10) ◽  
pp. o1138-o1138
Author(s):  
Sung Kwon Kang ◽  
Byung Hee Han
Keyword(s):  
Crystal Structure ◽  
Dihedral Angle ◽  
Title Compound ◽  
Crystal Packing ◽  
Inversion Center ◽  
Asymmetric Unit ◽  
Compound C ◽  
Vinyl Group

The asymmetric unit of the title compound, C28H26O6, contains one half-molecule, with the complete molecule generated by a crystallographic inversion center. The central terephthalate and methoxybenzene rings are approximately perpendicular, making a dihedral angle of 80.31 (5)°. No specific directional contacts are noted in the crystal packing. The terminal vinyl group is disordered over two orientations with an occupancy ratio of 0.796 (4):0.204 (4).

scholarly journals Crystal structure ofcatena-poly[1,3-dibenzylbenzimidazolium [[chloridomercurate(II)]-di-μ-chlorido]]

2015 ◽  
Vol 71 (12) ◽  
pp. m255-m256
Author(s):  
Mehdi Bouchouit ◽  
Abdelmalek Bouraiou ◽  
Sofiane Bouacida ◽  
Hocine Merazig ◽  
Ali Belfaitah ◽  
...  
Keyword(s):  
Crystal Packing ◽  
Rotation Axis ◽  
The Other ◽  
Stacking Interactions ◽  
Asymmetric Unit ◽  
Rotation Symmetry ◽  
Coordination Environment ◽  
Compound C ◽  
Benzene Rings ◽  
Cl Atoms

The asymmetric unit of the polymeric title compound, {(C21H19N2)[HgCl3]}n, comprises one-half of the cationic molecule, the other half being generated by application of twofold rotation symmetry, one Hg and two Cl atoms. The HgIIatom, lying on a twofold rotation axis, exhibits a distorted triangular coordination environment and is surrounded by three Cl atoms with Hg—Cl distances in the range 2.359 (2)–2.4754 (13) Å. Two additional longer distances [Hg...Cl = 3.104 (14) Å] lead to the formation of polymeric [HgCl1/1Cl4/2]−chains extending along [001]. The crystal packing can be described by cationic layers alternating parallel to (-110) with the anionic chains located between the layers. The packing is consolidated by π–π stacking interactions between the benzene rings of the central benzimidazole entities, with centroid-to-centroid distances of 3.643 (3) Å.

(2R,3S)-Diethyl 2,3-dibenzoylsuccinate

2006 ◽  
Vol 62 (5) ◽  
pp. o1966-o1967
Author(s):  
Sheng-Li Hu ◽  
Xian-Mei Liu ◽  
Hui-Zhen Guo ◽  
An-Xin Wu
Keyword(s):  
Crystal Structure ◽  
Intermolecular Interactions ◽  
Title Compound ◽  
Crystal Packing ◽  
The Other ◽  
Asymmetric Unit ◽  
Compound C

In the crystal structure of the title compound, C22H22O6, the asymmetric unit consists of one half-molecule with the other half generated by a centre of inversion. The crystal packing is stabilized by C—H...O intermolecular interactions.

scholarly journals 4-Benzyl-6-bromo-2-(4-chlorophenyl)-4H-imidazo[4,5-b]pyridine

IUCrData ◽  
2017 ◽  
Vol 2 (6) ◽  
Author(s):  
Selma Bourichi ◽  
Youssef Kandri Rodi ◽  
Jerry P. Jasinski ◽  
Manpreet Kaur ◽  
Younes Ouzidan ◽  
...  
Keyword(s):  
Title Compound ◽  
Phenyl Ring ◽  
Crystal Packing ◽  
The Other ◽  
Equatorial Position ◽  
Stacking Interactions ◽  
Compound C ◽  
Π Stacking ◽  
The Mean ◽  
Ring Motif

In the title compound, C19H13BrClN3, the chlorophenyl ring occupies an equatorial position with respect to the mean plane of the imidazopyridine unit, while the other phenyl ring is twisted by 4.1 (2)° with respect to the mean plane of the imidazopyridine unit. In the crystal, pairwise C—H...Br interactions link the molecules into dimers, forming anR22(16) ring motif. In addition, weak π–π stacking interactions stabilize the crystal packing.

scholarly journals 4-Amino-5-{[cyclohexyl(methyl)amino]methyl}isophthalonitrile

IUCrData ◽  
2019 ◽  
Vol 4 (10) ◽  
Author(s):  
Muhammad Sharif ◽  
Rauf Razzaq ◽  
Ralf Jackstell ◽  
Anke Spannenberg
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Crystal Packing ◽  
The Other ◽  
Asymmetric Unit ◽  
Compound C ◽  
Cyclohexyl Methyl

The title compound, C16H20N4, was synthesized by cyanation of bromhexine. The compound crystallizes with two unique molecules in the asymmetric unit. The substituted aniline and cyclohexane rings are inclined to one another by 37.26 (6)° in one molecule and by 22.84 (7)° in the other. In the crystal packing, intra- and intermolecular N—H...N hydrogen bonds and an intermolecular C—H...N contact were observed.

Sign in / Sign up

Export Citation Format

Share Document