scholarly journals Crystal structure and Hirshfeld surface analysis of N-(tert-butyl)-2-(phenylethynyl)imidazo[1,2-a]pyridin-3-amine

2019 ◽  
Vol 75 (10) ◽  
pp. 1564-1567
Author(s):  
Zahira Tber ◽  
Sevgi Kansiz ◽  
Mohamed El Hafi ◽  
Mohamed Loubidi ◽  
Jabrane Jouha ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Surface Analysis ◽  
Title Compound ◽  
Phenyl Ring ◽  
Hirshfeld Surface ◽  
Hirshfeld Surface Analysis ◽  
Π Interactions ◽  
Compound C ◽  
The Mean

The bicyclic imidazo[1,2-a]pyridine core of the title compound, C19H19N3, is relatively planar with an r.m.s. deviation of 0.040 Å. The phenyl ring is inclined to the mean plane of the imidazo[1,2-a]pyridine unit by 18.2 (1)°. In the crystal, molecules are linked by N—H...H hydrogen bonds, forming chains along the c-axis direction. The chains are linked by C—H...π interactions, forming slabs parallel to the ac plane. The Hirshfeld surface analysis and fingerprint plots reveal that the crystal structure is dominated by H...H (54%) and C...H/H...C (35.6%) contacts. The crystal studied was refined as an inversion twin

scholarly journals Crystal structure and Hirshfeld surface analysis of the naturally occurring cassane-type diterpenoid, 6β-cinnamoyl-7β-hydroxyvouacapen-5α-ol

2018 ◽  
Vol 74 (3) ◽  
pp. 385-389 ◽  
Author(s):  
K. Osahon Ogbeide ◽  
Rajesh Kumar ◽  
Mujeeb-Ur-Rehman ◽  
Bodunde Owolabi ◽  
Abiodun Falodun ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Surface Analysis ◽  
Title Compound ◽  
Crystal Packing ◽  
Hirshfeld Surface ◽  
Hirshfeld Surface Analysis ◽  
Π Interactions ◽  
Compound C ◽  
Naturally Occurring

The title compound, C29H36O5, a cassane-type diterpenoid {systematic name: (4aR,5R,6R,6aS,7R,11aS,11bR)-4a,6-dihydroxy-4,4,7,11b-tetramethyl-1,2,3,4,4a,5,6,6a,7,11,11a,11b-dodecahydrophenanthro[3,2-b]furan-5-yl 3-phenylprop-2-enoate}, was isolated from a medicinally important plant,Caesalpinia pulcherrima(Fabaceae). In the molecule, three cyclohexane rings aretrans-fused and adopt chair, chair and half-chair conformations. In the crystal, molecules are linkedviaO—H...O hydrogen bonds, forming a tape structure along theb-axis direction. The tapes are further linked into a double-tape structure through C—H...π interactions. The Hirshfeld surface analysis indicates that the contributions to the crystal packing are H...H (65.5%), C...H (18.7%), O...H (14.5%) and C...O (0.3%).

scholarly journals Crystal structure and Hirshfeld surface analysis of a new benzodiazepine derivative: 4-dichloromethyl-2,3-dihydro-1H-1,5-benzodiazepin-2-one

2019 ◽  
Vol 75 (1) ◽  
pp. 33-37 ◽  
Author(s):  
Karim Chkirate ◽  
Sevgi Kansiz ◽  
Khalid Karrouchi ◽  
Joel T. Mague ◽  
Necmi Dege ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Surface Analysis ◽  
Title Compound ◽  
Crystal Packing ◽  
Hirshfeld Surface ◽  
Hirshfeld Surface Analysis ◽  
Compound C ◽  
The Mean ◽  
Ring Motif

In the title compound, C10H8Cl2N2O, the seven-membered diazepine ring adopts a boat-shaped conformation. The mean planes of the two rings of the benzodiazepine unit are inclined to each other by 22.05 (6)°. In the crystal, molecules are linked by pairs of N—H...O hydrogen bonds, forming inversion dimers with anR22(8) ring motif. The dimers are linked by C—H...π interactions, forming layers lying parallel to (10\overline{1}). The roles of the intermolecular interactions in the crystal packing were clarified using Hirshfeld surface analysis; the most important contributions are from Cl...H/H...Cl (30.5%) and H...H (22.5%) interactions.

scholarly journals Crystal structure and Hirshfeld surface analysis of 3-[(1E)-(4-{4-[(E)-(3-hydroxybenzylidene)amino]phenoxy}phenylimino)methyl]phenol

2021 ◽  
Vol 77 (3) ◽  
pp. 266-269
Author(s):  
Shaaban K. Mohamed ◽  
Joel T. Mague ◽  
Mehmet Akkurt ◽  
Farouq E. Hawaiz ◽  
Sahar M. I. Elgarhy ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Surface Analysis ◽  
Title Compound ◽  
Crystal Packing ◽  
Hirshfeld Surface ◽  
Hirshfeld Surface Analysis ◽  
Rotation Symmetry ◽  
Π Interactions ◽  
Compound C

In the crystal, the molecule of the title compound, C26H20N2O3, has crystallographically imposed twofold rotation symmetry. The crystal packing consists of layers parallel to the ab plane formed by O—H...N and C—H...O hydrogen bonds. Between the layers, C—H...π interactions are observed.

scholarly journals Crystal structure and Hirshfeld surface analysis of 2,2,2-trichloro-N,N-bis{[(1RS,4SR)-1,4-dihydro-1,4-epoxynaphthalen-1-yl]methyl}acetamide

2021 ◽  
Vol 77 (10) ◽  
pp. 1048-1053
Author(s):  
Zeliha Atioğlu ◽  
Mehmet Akkurt ◽  
Gunay Z. Mammadova ◽  
Ajaya Bhattarai
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Surface Analysis ◽  
Title Compound ◽  
Van Der Waals ◽  
Hirshfeld Surface ◽  
Hirshfeld Surface Analysis ◽  
Axis Direction ◽  
Π Interactions ◽  
Compound C

In the title compound, C24H18Cl3NO3, the tetrahydrofuran rings adopt envelope conformations. In the crystal, C—H...O hydrogen bonds connect molecules, generating layers parallel to the (001) plane. These layers are connected along the c-axis direction by C—H...π interactions. The packing is further stabilized by interlayer van der Waals and interhalogen interactions. The most important contributions to the surface contacts are from H...H (36.8%), Cl...H/H...Cl (26.6%), C...H/H...C (18.8%) and O...H/H...O (11.3%) interactions, as concluded from a Hirshfeld surface analysis.

scholarly journals Crystal structure and Hirshfeld surface analysis of 4,5-dibromo-6-methyl-2-phenyl-2,3,3a,4,5,6,7,7a-octahydro-3a,6-epoxy-1H-isoindol-1-one

2021 ◽  
Vol 77 (3) ◽  
pp. 237-241
Author(s):  
Dmitriy F. Mertsalov ◽  
Maryana A. Nadirova ◽  
Lala V. Chervyakova ◽  
Mikhail S. Grigoriev ◽  
Evgeniya R. Shelukho ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Surface Analysis ◽  
Title Compound ◽  
Crystal Packing ◽  
Hirshfeld Surface ◽  
Hirshfeld Surface Analysis ◽  
Pyrrolidine Ring ◽  
Π Interactions ◽  
Compound C

In the title compound, C15H15Br2NO2, two bridged tetrahydrofuran rings adopt envelope conformations with the O atom as the flap. The pyrrolidine ring also adopts an envelope conformation with the spiro C atom as the flap. In the crystal, the molecules are linked into dimers by pairs of C—H...O hydrogen bonds, thus generating R 2 2(18) rings. The crystal packing is dominated by H...H, Br...H, H...π and Br...π interactions. One of the Br atoms is disordered over two sites with occupation ratio of 0.833 (8):0.167 (8).

scholarly journals Crystal structure and Hirshfeld surface analysis of (E)-1-[2,2-dichloro-1-(4-nitrophenyl)ethenyl]-2-(4-fluorophenyl)diazene

2019 ◽  
Vol 75 (2) ◽  
pp. 237-241 ◽  
Author(s):  
Zeliha Atioğlu ◽  
Mehmet Akkurt ◽  
Namiq Q. Shikhaliyev ◽  
Gulnar T. Suleymanova ◽  
Khanim N. Bagirova ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Surface Analysis ◽  
Title Compound ◽  
Crystal Packing ◽  
Hirshfeld Surface ◽  
Hirshfeld Surface Analysis ◽  
Ring Form ◽  
Compound C

In the title compound, C14H8Cl2FN3O2, the 4-fluorophenyl ring and the nitro-substituted benzene ring form a dihedral angle of 63.29 (8)°. In the crystal, molecules are linked by C—H...O hydrogen bonds into chains running parallel to the c axis. The crystal packing is further stabilized by C—Cl...π, C—F...π and N—O...π interactions. The Hirshfeld surface analysis of the crystal structure indicates that the most important contributions to the crystal packing are from H...O/O...H (15.5%), H...H (15.3%), Cl...H/H...Cl (13.8%), C...H/H...C (9.5%) and F...H/H...F (8.2%) interactions.

scholarly journals (3aS,4R,5R,6S,7aR)-4,5-Dibromo-2-[4-(trifluoromethyl)phenyl]-2,3,3a,4,5,6,7,7a-octahydro-3a,6-epoxy-1H-isoindol-1-one: crystal structure and Hirshfeld surface analysis

2021 ◽  
Vol 77 (5) ◽  
pp. 466-472
Author(s):  
Dmitriy F. Mertsalov ◽  
Kseniia A. Alekseeva ◽  
Magrycheva S. Daria ◽  
Maxim E. Cheshigin ◽  
Sevim Türktekin Çelikesir ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Surface Analysis ◽  
Title Compound ◽  
Hirshfeld Surface ◽  
Hirshfeld Surface Analysis ◽  
Asymmetric Unit ◽  
Compound C ◽  
Independent Molecules ◽  
Molecular Layers

The asymmetric unit of the title compound, C15H12Br2F3NO2, consists of two crystallographically independent molecules. In both molecules, the pyrrolidine and tetrahydrofuran rings adopt an envelope conformation. In the crystal, molecule pairs generate centrosymmetric rings with R 2 2(8) motifs linked by C—H...O hydrogen bonds. These pairs of molecules form a tetrameric supramolecular motif, leading to molecular layers parallel to the (100) plane by C—H...π and C—Br...π interactions. Interlayer van der Waals and interhalogen interactions stabilize molecular packing. The F atoms of the CF3 groups of both molecules are disordered over two sets of sites with refined site occupancies of 0.60 (3)/0.40 (3) and 0.640 (15)/0.360 (15). The most important contributions to the surface contacts of both molecules are from H...H (23.8 and 22.4%), Br...H/H...Br (18.3 and 12.3%), O...H/H...O (14.3 and 9.7%) and F...H/H...F (10.4 and 19.1%) interactions, as concluded from a Hirshfeld surface analysis.

scholarly journals Crystal structure and Hirshfeld surface analysis of (3S,3aR,6aS)-3-(1,3-diphenyl-1H-pyrazol-4-yl)-5-(4-methoxyphenyl)-2-phenyl-3,3a,4,5,6,6a-hexahydro-2H-pyrrolo[3,4-d][1,2]oxazole-4,6-dione

2021 ◽  
Vol 77 (4) ◽  
pp. 356-359
Author(s):  
Shaaban K. Mohamed ◽  
Awad I. Said ◽  
Joel T. Mague ◽  
Talaat I. El-Emary ◽  
Mehmet Akkurt ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Surface Analysis ◽  
Title Compound ◽  
Crystal Packing ◽  
Hirshfeld Surface ◽  
Hirshfeld Surface Analysis ◽  
Compound C ◽  
Chiral Carbon

In the title compound, C33H26N4O4, the two fused five-membered rings and their N-bound aromatic substituents form a pincer-like motif. The relative conformations about the three chiral carbon atoms are established. In the crystal, a combination of C—H...O and C—H...N hydrogen bonds and C—H...π(ring) interactions leads to the formation of layers parallel to the bc plane. A Hirshfeld surface analysis indicates that the most significant contributions to the crystal packing are from H...H (44.3%), C...H/H...C (29.8%) and O...H/H...O (15.0%) contacts.

scholarly journals Crystal structure and Hirshfeld surface analysis of (2E)-3-(3-bromo-4-fluorophenyl)-1-(3,4-dimethoxyphenyl)prop-2-en-1-one

2018 ◽  
Vol 74 (8) ◽  
pp. 1063-1066 ◽  
Author(s):  
S. N. Sheshadri ◽  
Zeliha Atioğlu ◽  
Mehmet Akkurt ◽  
M. K. Veeraiah ◽  
Ching Kheng Quah ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Surface Analysis ◽  
Title Compound ◽  
Hirshfeld Surface ◽  
Van Der Waals Interactions ◽  
Hirshfeld Surface Analysis ◽  
Aromatic Rings ◽  
Compound C ◽  
Graph Set

In the molecule of the title compound, C17H14BrFO3, the aromatic rings are tilted with respect to the enone bridge by 13.63 (14) and 4.27 (15)°, and form a dihedral angle 17.91 (17)°. In the crystal, centrosymmetrically related molecules are linked by pairs of C—H...O hydrogen bonds into dimeric units, forming rings of R 2 2(14) graph-set motif. The dimers are further connected by weak C—H...O hydrogen interactions, forming layers parallel to (10\overline{1}). Hirshfeld surface analysis shows that van der Waals interactions constitute the major contribution to the intermolecular interactions, with H...H contacts accounting for 29.7% of the surface.

scholarly journals The crystal structure and Hirshfeld surface analysis of 1-(2,5-dimethoxyphenyl)-2,2,6,6-tetramethylpiperidine

2020 ◽  
Vol 76 (6) ◽  
pp. 794-797
Author(s):  
Mustapha Tiouabi ◽  
Raphaël Tabacchi ◽  
Helen Stoeckli-Evans
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Surface Analysis ◽  
Title Compound ◽  
Chair Conformation ◽  
Hirshfeld Surface ◽  
Hirshfeld Surface Analysis ◽  
Piperidine Ring ◽  
Compound C

In the title compound, C17H27NO2, the piperidine ring has a chair conformation and is positioned normal to the benzene ring. In the crystal, molecules are linked by C—H...O hydrogen bonds, forming chains propagating along the c-axis direction.

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