scholarly journals Crystal structure of (2E,3E)-N2,N3-bis(3-ethyl-[1,1′-biphenyl]-4-yl)butane-2,3-diimine

2015 ◽  
Vol 71 (4) ◽  
pp. o251-o252 ◽  
Author(s):  
Yan Zhao ◽  
Jianchao Yuan ◽  
Jie Zhao ◽  
Shenglan Zhao
Keyword(s):  
Crystal Structure ◽  
Title Compound ◽  
Condensation Reaction ◽  
Maximum Deviation ◽  
Ring Systems ◽  
Π Interactions ◽  
Compound C ◽  
Benzene Rings ◽  
The Mean

In the title compound, C32H32N2, synthesized by the condensation reaction of 2-ethyl-4-phenylaniline and 2,3-butanedione, the conformation about the C=N bonds isEand the substituted biphenyl units aretransto one another. In the two biphenyl ring systems, the planes of the two rings are inclined to one another by 25.25 (19) and 28.01 (19)°. The planes of the ethyl-substituted benzene rings are inclined to one another by 20.23 (19)° and to the mean plane of the butane-2,3-diimine unit [maximum deviation = 0.014 (4) Å] by 83.19 (19) and 63.38 (19)°. In the crystal, molecules are linked by C—H...π interactions, forming sheets lying parallel to (101).

scholarly journals Crystal structure of dimethyl 3,3′-[(4-fluorophenyl)methylene]bis(1H-indole-2-carboxylate)

2015 ◽  
Vol 71 (10) ◽  
pp. 1140-1142 ◽  
Author(s):  
Hong-Shun Sun ◽  
Yu-long Li ◽  
Hong Jiang ◽  
Ning Xu ◽  
Hong Xu
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Indole Ring ◽  
Ring Systems ◽  
Π Interactions ◽  
Compound C ◽  
The Mean ◽  
Supramolecular Chains

In the title compound, C27H21FN2O4, the mean planes of the indole ring systems (r.m.s. deviations = 0.0263 and 0.0160 Å) are approximately perpendicular to one another, making a dihedral angle of 84.0 (5)°; the fluorobenzene ring is twisted with respect to the mean planes of the two indole ring systems at 89.5 (5) and 84.6 (3)°. In the crystal, pairs of N—H...O hydrogen bonds link the molecules into inversion dimers, which are further linked by N—H...O hydrogen bonds into supramolecular chains propagated along theb-axis direction. Weak C—H...π interactions are observed between neighbouring chains.

scholarly journals Crystal structure of 10-ethyl-7-(9-ethyl-9H-carbazol-3-yl)-10H-phenothiazine-3-carbaldehyde

2017 ◽  
Vol 73 (5) ◽  
pp. 726-728 ◽  
Author(s):  
Vairavan Mahalakshmi ◽  
Siddan Gouthaman ◽  
Madurai Sugunalakshmi ◽  
Srinivasan Bargavi ◽  
Srinivasakannan Lakshmi
Keyword(s):  
Crystal Structure ◽  
Dihedral Angle ◽  
Title Compound ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Single Bond ◽  
Π Interactions ◽  
Compound C ◽  
Benzene Rings ◽  
The Mean

The title compound, C29H24N2OS, contains a phenothiazine moiety linked to a planar carbazole unit (r.m.s. deviation = 0.029 Å) by a C—C single bond. The phenothiazine moiety possesses a typical non-planar butterfly structure with a fold angle of 27.36 (9)° between the two benzene rings. The dihedral angle between the mean planes of the carbazole and phenothiazine units is 27.28 (5)°. In the crystal, molecules stack in pairs along thec-axis direction, linked by offset π–π interactions [intercentroid distance = 3.797 (1) Å]. There are C—H...π interactions present linking these dimers to form a three-dimensional structure.

scholarly journals Crystal structure oftrans-1-{2-[4-(dimethylamino)phenyl]ethyl}-4-[2-(pyren-1-yl)ethyl]cyclohexane

2015 ◽  
Vol 71 (8) ◽  
pp. o629-o630
Author(s):  
Sreevidya Thekku Veedu ◽  
Simone Techert
Keyword(s):  
Crystal Structure ◽  
Benzene Ring ◽  
Title Compound ◽  
Chair Conformation ◽  
Ring System ◽  
Maximum Deviation ◽  
Π Interactions ◽  
Twin Domain ◽  
Compound C ◽  
The Mean

The title compound, C34H37N, is a pyrene derivative in which the pyrene ring system is linked to an ethylcyclohexane unit which, in turn, carries a [4-(dimethylamino)phenyl]ethyl substituent in theparaposition. The central cyclohexane ring has a chair conformation, with the exocyclic C—C bonds in equatorial orientations. The benzene ring is inclined to the mean plane of the pyrene ring system [maximum deviation = 0.038 (4) Å] by 14.84 (15)°. In the crystal, molecules are linked by C—H...π interactions, forming chains propagating along [010]. The crystal was refined as a non-merohedral twin [domain ratio = 0.9989 (4):0.0011 (4)].

scholarly journals Crystal structure of 4-(4b,8a-dihydro-9H-pyrido[3,4-b]indol-1-yl)-7-methyl-2H-chromen-2-one

2017 ◽  
Vol 73 (1) ◽  
pp. 56-58 ◽  
Author(s):  
S. Samundeeswari ◽  
Manohar V. Kulkarni ◽  
G. N. Anil Kumar
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Ring Systems ◽  
Axis Direction ◽  
Π Interactions ◽  
Compound C ◽  
The Mean

The title compound, C21H14N2O2, was prepared by Pictet–Spengler cyclization of tryptamine and 4-formyl coumarin. In the molecule, the dihedral angle between the mean planes of the coumarin and β-carboline ring systems is 63.8 (2)°. In the crystal, molecules are linkedviaN—H...N hydrogen bonds, forming chains along theb-axis direction. Within the chains, there are a number of offset π–π interactions present [shortest intercentroid distance = 3.457 (2) Å].

scholarly journals 9-(2-Bromophenoxycarbonyl)-10-methylacridinium trifluoromethanesulfonate

2012 ◽  
Vol 68 (6) ◽  
pp. o1722-o1723
Author(s):  
Damian Trzybiński ◽  
Andrzej Sieradzan ◽  
Karol Krzymiński ◽  
Jerzy Błażejowski
Keyword(s):  
Crystal Structure ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Carboxy Group ◽  
Title Compound ◽  
Ring Systems ◽  
Π Interactions ◽  
Compound C ◽  
Centroid Distance ◽  
The Mean

In the crystal structure of the title compound, C21H15BrNO2 +·CF3SO3 −, adjacent cations are linked through C—Br...π and π–π contacts [centroid–centroid distance = 3.744 (2) Å], and neighbouring cations and anions via C—H...O, C—F...π and S—O...π interactions. The acridine and benzene ring systems are oriented at a dihedral angle of 18.7 (1)°. The carboxy group is twisted at an angle of 69.3 (1)° relative to the acridine skeleton. The mean planes of adjacent acridine moieties are either parallel or inclined at an angle of 27.8 (1)° in the lattice.

scholarly journals (3E,5E)-3,5-Bis(4-methylbenzylidene)-1-[3-(piperidin-1-yl)propanoyl]piperidin-4-one

2012 ◽  
Vol 68 (8) ◽  
pp. o2493-o2494 ◽  
Author(s):  
Yalda Kia ◽  
Hasnah Osman ◽  
Vikneswaran Murugaiyah ◽  
Suhana Arshad ◽  
Ibrahim Abdul Razak
Keyword(s):  
Title Compound ◽  
Chair Conformation ◽  
Piperidine Ring ◽  
Dihedral Angles ◽  
Maximum Deviation ◽  
Π Interactions ◽  
Compound C ◽  
Benzene Rings ◽  
The Mean ◽  
Graph Set

In the title compound, C29H34N2O2, the central piperidine ring adopts a half-chair conformation, whereas the terminal one adopts a chair conformation. The mean plane of the central piperidine ring [maximum deviation = 0.384 (2) Å] makes dihedral angles of 64.82 (13) and 17.55 (13)° with the benzene rings. In the crystal, molecules are linked into a tape along thebaxisviaC—H...O interactions, generatingR22(20) andR21(6) graph-set motifs. C—H...π interactions are observed between the tapes.

(E)-1-Mercapto-1-(p-tolylsulfanyl)-N-(p-tosylmethyl) methanimine: a two-dimensional supramolecular network of S—H...O and C—H...π interactions

2006 ◽  
Vol 62 (4) ◽  
pp. o1384-o1386
Author(s):  
Masaki Kakeya ◽  
Takashi Fujihara ◽  
Akira Nagasawa
Keyword(s):  
Crystal Structure ◽  
Dihedral Angle ◽  
Title Compound ◽  
Supramolecular Network ◽  
Two Dimensional ◽  
Π Interactions ◽  
Compound C ◽  
Dimensional Network ◽  
Benzene Rings ◽  
The Mean

In the crystal structure of the title compound, C16H17NO2S3, the dihedral angle between the mean planes of the two benzene rings is 70.8 (1)°. There are intermolecular S—H...O and C—H...π interactions, and molecules are linked into a two-dimensional network. The layers are further linked together by weak C—H...O interactions.

scholarly journals 1-(4-Bromophenylsulfonyl)-2-methylnaphtho[2,1-b]furan

2012 ◽  
Vol 68 (8) ◽  
pp. o2324-o2324 ◽  
Author(s):  
Hong Dae Choi ◽  
Pil Ja Seo ◽  
Uk Lee
Keyword(s):  
Crystal Structure ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Title Compound ◽  
Furan Ring ◽  
Π Interactions ◽  
Compound C ◽  
Centroid Distance ◽  
Benzene Rings ◽  
The Mean

In the title compound, C19H13BrO3S, the 4-bromophenyl ring makes a dihedral angle of 64.11 (2)° with the mean plane [r.m.s. deviation = 0.01 (2) Å] of the naphthofuran ring. In the crystal, molecules are linked by weak C—H...O and C—H...π interactions. The crystal structure also exhibits slipped π–π interactions between the central naphthofuran benzene rings of neighbouring molecules [centroid–centroid distance = 3.559 (2), slippage = 1.036 (2) Å], and between the central naphthofuran benzene ring and the furan ring of neighbouring molecules [centroid–centroid distance = 3.655 (2), slippage = 1.136 (2) Å].

scholarly journals (E)-3-[4-(Hexyloxy)phenyl]-1-(2-hydroxyphenyl)prop-2-en-1-one

2009 ◽  
Vol 65 (6) ◽  
pp. o1301-o1302 ◽  
Author(s):  
Zainab Ngaini ◽  
Siti Muhaini Haris Fadzillah ◽  
Hasnain Hussain ◽  
Ibrahim Abdul Razak ◽  
Hoong-Kun Fun
Keyword(s):  
Crystal Structure ◽  
Least Squares ◽  
Title Compound ◽  
Maximum Deviation ◽  
Π Interactions ◽  
Compound C ◽  
Benzene Rings ◽  
Hydroxy Groups

In the title compound, C21H24O3, the conformation of the enone group iss–cis. The benzene rings are inclined at an angle of 7.9 (1)°. The alkoxy tail is planar, with a maximum deviation from the least-squares plane of 0.009 (2) Å, and adopts atransconformation throughout. An intramolecular O—H...O interaction between the keto and hydroxy groups formsS(6) ring motifs. In the crystal, molecules are arranged in a head-to-tail manner down theaaxis and are subsequently stacked along thebaxis, forming molecular sheets parallel to theabplane. The crystal structure is further stabilized by weak C—H...π interactions and short C...O [3.376 (2) Å] contacts.

scholarly journals Crystal structure of (7-chloro-2-oxo-2H-chromen-4-yl)methylN,N-dimethylcarbamodithioate

2015 ◽  
Vol 71 (4) ◽  
pp. o263-o264
Author(s):  
H. D. Kavitha ◽  
M. Vinduvahini ◽  
N. M. Mahabhaleshwaraiah ◽  
O. Kotresh ◽  
H. C. Devarajegowda
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Ring System ◽  
Maximum Deviation ◽  
Π Interactions ◽  
Compound C ◽  
Benzene Rings ◽  
Chromene Ring

In the title compound, C13H12Cl N O2S2, the 2H-chromene ring system is almost planar, with a maximum deviation of 0.005 (2) Å. The packing features C—H...S hydrogen bonds and π–π interactions between fused benzene rings of chromene [shortest centroid–centroid distances = 3.6553 (13) and 3.5551 (13) Å].

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