scholarly journals Crystal structure and Hirshfeld surface analysis of trans-2,5-dimethylpiperazine-1,4-diium tetrachloridocobaltate(II)

2021 ◽  
Vol 77 (4) ◽  
pp. 424-427
Author(s):  
Meriem Landolsi ◽  
Sonia Abid
Keyword(s):  
Surface Analysis ◽  
Chair Conformation ◽  
Hirshfeld Surface ◽  
Hirshfeld Surface Analysis ◽  
Methyl Groups ◽  
Supramolecular Network ◽  
Inversion Symmetry ◽  
Piperazine Ring ◽  
Crystal Stability ◽  
Molecular Salt

In the title molecular salt, (C6H16N2)[CoCl4], the complete dication is generated by crystallographic inversion symmetry and the piperazine ring adopts a chair conformation with the pendant methyl groups in equatorial orientations. The complete dianion is generated by crystallographic twofold symmetry. In the crystal, the (C6H16N2)2+ and [CoCl4]2− ions are linked by N—H...Cl and C—H...Cl hydrogen bonds, thereby forming a two-dimensional supramolecular network. The Hirshfeld surface analysis and fingerprint plots reveal that the largest contributions to the crystal stability come from H...Cl/Cl...H (68.4%) and H...H (27.4%) contacts.

scholarly journals trans-2,5-Dimethylpiperazine-1,4-diium bis(perchlorate) dihydrate: crystal structure and Hirshfeld surface analysis

2016 ◽  
Vol 72 (4) ◽  
pp. 593-596 ◽  
Author(s):  
Cherifa Ben Mleh ◽  
Thierry Roisnel ◽  
Houda Marouani
Keyword(s):  
Hydrogen Bonds ◽  
Surface Analysis ◽  
Three Dimensional ◽  
Hirshfeld Surface ◽  
Hirshfeld Surface Analysis ◽  
Supramolecular Network ◽  
Inversion Symmetry ◽  
Asymmetric Unit ◽  
Molecular Salt ◽  
Water Hydrogen

The asymmetric unit of the title hydrated molecular salt, C6H16N22+·2ClO4−·2H2O, contains a half dication (completed by inversion symmetry), a perchlorate anion and a water molecule. The extended structure consists of infinite chains of formula [(ClO4)H2O]nn−ions extending along thebaxis linked by Ow—H...O (w = water) hydrogen bonds. These chains are cross-linked by the dicationsviaN—H...Owand weak C—H...O hydrogen bonds, thus forming a three-dimensional supramolecular network. Three-dimensional Hirshfeld surface analysis and two-dimensional fingerprint maps reveal that the structure is dominated by H...O/O...H and H...H contacts.

scholarly journals Crystal structure and Hirshfeld surface analysis of 3-octyl-4-oxo-2,6-bis(3,4,5-trimethoxyphenyl)piperidinium chloride

2018 ◽  
Vol 74 (7) ◽  
pp. 931-934
Author(s):  
Rubina Siddiqui ◽  
Urooj Iqbal ◽  
Zafar Saeed Saify ◽  
Shammim Akhter ◽  
Sammer Yousuf
Keyword(s):  
Surface Analysis ◽  
Crystal Packing ◽  
Condensation Reaction ◽  
Chair Conformation ◽  
Hirshfeld Surface ◽  
Hirshfeld Surface Analysis ◽  
One Pot ◽  
Compound C ◽  
Mannich Condensation ◽  
Centrosymmetric Dimers

The title compound, C31H46NO7 +·Cl−, was synthesized by a one-pot Mannich condensation reaction. In the molecule, the piperidinone ring adopts a chair conformation, and the trimethoxy-substituted benzene rings and octyl chain are arranged equatorially. In the crystal, centrosymmetric dimers are linked into layers parallel to (011) by N—H...Cl and C—H...Cl hydrogen bonds. A Hirshfeld surface analysis indicates that the most important contributions for the crystal packing are O...H (20.5%) interactions followed by C...H (7.8%), Cl...H (5.5%), C...C (1.2%), C...O (0.5%) and Cl...O (0.4%) interactions.

scholarly journals Crystal structure and halogen–hydrogen bonding of a Delépine reaction intermediate

2021 ◽  
Vol 77 (1) ◽  
pp. 1-4
Author(s):  
David Z. T. Mulrooney ◽  
Helge Müller-Bunz ◽  
Tony D. Keene
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Surface Analysis ◽  
Van Der Waals ◽  
Hirshfeld Surface ◽  
Van Der Waals Interactions ◽  
Hirshfeld Surface Analysis ◽  
Space Group ◽  
Molecular Salt

The reaction of 1,5-dibromopentane with urotropine results in crystals of the title molecular salt, 5-bromourotropinium bromide [systematic name: 1-(5-bromopentyl)-3,5,7-triaza-1-azoniatricyclo[3.3.1.13,7]decane bromide], C11H22BrN4 +·Br− (1), crystallizing in space group P21/n. The packing in compound 1 is directed mainly by H...H van der Waals interactions and C—H...Br hydrogen bonds, as revealed by Hirshfeld surface analysis. Comparison with literature examples of alkylurotropinium halides shows that the interactions in 1 are consistent with those in other bromides and simple chloride and iodide species.

scholarly journals Crystal structure and Hirshfeld surface analysis of 3,4-dihydro-2H-anthra[1,2-b][1,4]dioxepine-8,13-dione

2020 ◽  
Vol 76 (4) ◽  
pp. 576-580
Author(s):  
Sofia Zazouli ◽  
Mohammed Chigr ◽  
Ahmed Jouaiti ◽  
Nathalie Kyritsakas ◽  
El Mostafa Ketatni
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Surface Analysis ◽  
Three Dimensional ◽  
Ring System ◽  
Hirshfeld Surface ◽  
Hirshfeld Surface Analysis ◽  
Supramolecular Network ◽  
Compound C ◽  
The Mean

The title compound, C17H12O4, was synthesized from the dye alizarin. The dihedral angle between the mean plane of the anthraquinone ring system (r.m.s. deviation = 0.039 Å) and the dioxepine ring is 16.29 (8)°. In the crystal, the molecules are linked by C—H...O hydrogen bonds, forming sheets lying parallel to the ab plane. The sheets are connected through π–π and C=O...π interactions to generate a three-dimensional supramolecular network. Hirshfeld surface analysis was used to investigate intermolecular interactions in the solid-state: the most important contributions are from H...H (43.0%), H...O/O...H (27%), H...C/C...H (13.8%) and C...C (12.4%) contacts.

scholarly journals Crystal structure and Hirshfeld surface analysis of a new dithioglycoluril: 1,4-bis(4-methoxyphenyl)-3a-methyltetrahydroimidazo[4,5-d]imidazole-2,5(1H,3H)-dithione

2019 ◽  
Vol 75 (9) ◽  
pp. 1297-1300 ◽  
Author(s):  
Jonnie N. Asegbeloyin ◽  
Kenechukwu J. Ifeanyieze ◽  
Obinna C. Okpareke ◽  
Ebube E. Oyeka ◽  
Tatiana V. Groutso
Keyword(s):  
Hydrogen Bonds ◽  
Surface Analysis ◽  
Steric Effect ◽  
Bond Angle ◽  
Three Dimensional ◽  
Hirshfeld Surface ◽  
Hirshfeld Surface Analysis ◽  
Supramolecular Network ◽  
Torsion Angles ◽  
Methyl Group

In the title dithioglycoluril derivative, C19H20N4O3S2, there is a difference in the torsion angles between the thioimidazole moiety and the methoxyphenyl groups on either side of the molecule [C—N—Car—Car = 116.9 (2) and −86.1 (3)°, respectively]. The N—C—N bond angle on one side of the dithioglycoluril moiety is slightly smaller compared to that on the opposite side, [110.9 (2)° cf. 112.0 (2)°], probably as a result of the steric effect of the methyl group. In the crystal, N—H...S hydrogen bonds link adjacent molecules to form chains propagating along the c-axis direction. The chains are linked by C—H...S hydrogen bonds, forming layers parallel to the bc plane. The layers are then linked by C—H...π interactions, leading to the formation of a three-dimensional supramolecular network. Hirshfeld surface analysis and two-dimensional fingerprint plots were used to investigate the molecular interactions in the crystal.

scholarly journals Crystal structure and Hirshfeld surface analysis of 4-{[(anthracen-9-yl)methyl]amino}benzoic acid dimethylformamide monosolvate

2020 ◽  
Vol 76 (5) ◽  
pp. 728-731
Author(s):  
Adeeba Ahmed ◽  
Aiman Ahmad ◽  
Musheer Ahmad ◽  
Valentina A. Kalibabchuk
Keyword(s):  
Crystal Structure ◽  
Surface Analysis ◽  
Three Dimensional ◽  
Hirshfeld Surface ◽  
Hirshfeld Surface Analysis ◽  
Supramolecular Network ◽  
Compound C ◽  
Hydrogen Bonding Interactions ◽  
The Mean ◽  
Dimethylformamide Solution

The title compound, C22H17NO2·C3H7NO, was synthesized by condensation of an aromatic aldehyde with a secondary amine and subsequent reduction. It was crystallized from a dimethylformamide solution as a monosolvate, C22H17NO2·C3H7NO. The aromatic molecule is non-planar with a dihedral angle between the mean planes of the aniline moiety and the methyl anthracene moiety of 81.36 (8)°. The torsion angle of the Caryl—CH2—NH—Caryl backbone is 175.9 (2)°. The crystal structure exhibits a three-dimensional supramolecular network, resulting from hydrogen-bonding interactions between the carboxylic OH group and the solvent O atom as well as between the amine functionality and the O atom of the carboxylic group and additional C—H...π interactions. Hirshfeld surface analysis was performed to quantify the intermolecular interactions.

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.

scholarly journals Crystal structure and Hirshfeld surface analysis of ethyl (4R,4aS)-2-methyl-5,8-dioxo-6-phenyl-4a,5,6,7,7a,8-hexahydro-4H-furo[2,3-f]isoindole-4-carboxylate

2021 ◽  
Vol 77 (2) ◽  
pp. 86-90
Author(s):  
Vladimir P. Zaytsev ◽  
Lala V. Chervyakova ◽  
Elena A. Sorokina ◽  
Kirill A. Vasilyev ◽  
Sevim Türktekin Çelikesir ◽  
...  
Keyword(s):  
Surface Analysis ◽  
Three Dimensional ◽  
Chair Conformation ◽  
Hirshfeld Surface ◽  
Hirshfeld Surface Analysis ◽  
Pyrrolidine Ring ◽  
Compound C ◽  
Dimensional Network ◽  
Centroid Distance ◽  
Puckering Parameters

In the title compound, C20H19NO5, the central six-membered ring has a slightly distorted half-chair conformation, with puckering parameters of Q T = 0.3387 (11) Å, θ = 49.11 (19)° and φ = 167.3 (2)°. The conformation of the fused pyrrolidine ring is that of an envelope. Molecules are connected by intermolecular C—H...O hydrogen bonds, C—H...π interactions and π–π stacking interactions [centroid-to-centroid distance = 3.9536 (11) Å, with a slippage of 2.047 Å], forming a three-dimensional network. The most important contributions to the surface contacts are from H...H (46.3%), O...H/H...O (31.5%) and C...H/H...C (17.3%) interactions, as concluded from a Hirshfeld surface analysis.

scholarly journals Hirshfeld surface analysis and crystal structure of 7-methoxy-5-methyl-2-phenyl-11,12-dihydro-5,11-methano-1,2,4-triazolo[1,5-c][1,3,5]benzoxadiazocine

2018 ◽  
Vol 74 (9) ◽  
pp. 1211-1214 ◽  
Author(s):  
Mustafa Kemal Gumus ◽  
Sevgi Kansiz ◽  
Necmi Dege ◽  
Valentina A. Kalibabchuk
Keyword(s):  
Hydrogen Bonds ◽  
Surface Analysis ◽  
Crystal Packing ◽  
Three Dimensional ◽  
Triazole Ring ◽  
Hirshfeld Surface ◽  
Hirshfeld Surface Analysis ◽  
Supramolecular Network ◽  
Compound C ◽  
Benzene Rings

The title compound, C19H18N4O2, crystallizes with two independent molecules in the asymmetric unit. The triazole ring is inclined to the benzene rings by 9.63 (13) and 87.37 (12)° in one molecule, and by 4.46 (13) and 86.15 (11)° in the other. In the crystal, classical N—H...N hydrogen bonds, weak C—H...O hydrogen bonds and weak C—H...π interactions link the molecules into a three-dimensional supramolecular network. Hirshfeld surface analysis and two-dimensional fingerprint plots were used to investigate the intermolecular interactions present in the crystal, indicating that the most important contributions for the crystal packing are from H...H (51.4%), H...C/C...H (26.7%), H...O/O...H (8.9%) and H...N/N...H (8%) interactions.

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