C–H···O and C–H···X (X = Cl/Br) hydrogen bond tuned supramolecular assembly: a combined X-ray powder diffraction and Hirshfeld surface analysis

2014 ◽  
Vol 29 (3) ◽  
pp. 280-288 ◽  
Author(s):  
Dipak K. Hazra ◽  
Soumen Ghosh ◽  
Paramita Chatterjee ◽  
Somnath Ghosh ◽  
Monika Mukherjee ◽  
...  

Crystal structures of N-(2-chlorophenyl) acetamide (1) and phenyl (2-bromomethyl) benzoate (2) have been determined from laboratory X-ray powder diffraction data. In addition to intermolecular N–H···O and C–H···O hydrogen bonds, the crystal packing in (1) and (2) exhibits weak C–H···Cl/Br interactions, which facilitate formation of three-dimensional architectures. Hirshfeld surface analysis of compounds (1), (2), and a few related chloro- and bromo-phenyl derivatives retrieved from the CSD indicates that 83–97% of Hirshfeld surface areas in this class of compounds are due to H···H, H···π, H···O, and H···Cl/Br contacts.

Author(s):  
Robert A. Toro ◽  
Analio Dugarte-Dugarte ◽  
Jacco van de Streek ◽  
José Antonio Henao ◽  
José Miguel Delgado ◽  
...  

The structure of racemic (RS)-trichlormethiazide [systematic name: (RS)-6-chloro-3-(dichloromethyl)-1,1-dioxo-3,4-dihydro-2H-1λ6,2,4-benzothiadiazine-7-sulfonamide], C8H8Cl3N3O4S2 (RS-TCMZ), a diuretic drug used in the treatment of oedema and hypertension, was determined from laboratory X-ray powder diffraction data using DASH [David et al. (2006). J. Appl. Cryst. 39, 910–915.], refined by the Rietveld method with TOPAS-Academic [Coelho (2018). J. Appl. Cryst. 51, 210–218], and optimized using DFT-D calculations. The extended structure consists of head-to-tail dimers connected by π–π interactions which, in turn, are connected by C—Cl...π interactions. They form chains propagating along [101], further connected by N—H...O hydrogen bonds to produce layers parallel to the ac plane that stack along the b-axis direction, connected by additional N—H...O hydrogen bonds. The Hirshfeld surface analysis indicates a major contribution of H...O and H...Cl interactions (32.2 and 21.7%, respectively). Energy framework calculations confirm the major contribution of electrostatic interactions (E elec) to the total energy (E tot). A comparison with the structure of S-TCMZ is also presented.


2020 ◽  
Vol 76 (10) ◽  
pp. 1624-1628
Author(s):  
Hela Ferjani

A new 0D organic–inorganic hybrid material bis[1-(prop-2-en-1-yl)-1H-imidazol-3-ium] hexachloridostannate(IV), (C6H9N2)2[SnCl6], has been prepared and characterized by single-crystal X-ray diffraction, Hirshfeld surface analysis and UV–visible spectroscopy. The structure consists of isolated [SnCl6]2− octahedral anions separated by layers of organic 1-(prop-2-en-1-yl)-1H-imidazol-3-ium cations. The 1-(prop-2-en-1-yl) fragment in the organic cation exhibits disorder over two sets of atomic sites having occupancies of 0.512 (9) and 0.488 (9). The crystal packing of the title compound is established by intermolecular N/C–H...Cl hydrogen bond and π– π stacking interactions. Hirshfeld surface analysis employing three-dimensional molecular surface contours and two-dimensional fingerprint plots has been used to analyse the intermolecular interactions present in the structure. The optical properties of the crystal were studied using UV–visible absorption spectroscopy, showing one intense band at 208 nm, which is attributed to π–π* transitions in the cations.


Crystals ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 408 ◽  
Author(s):  
Ruo-Yan Li ◽  
Xiao-Xin An ◽  
Juan-Li Wu ◽  
You-Peng Zhang ◽  
Wen-Kui Dong

An unexpected trinuclear Co(II) complex, [Co3(L2)2(μ-OAc)2(CH3OH)2]·2CH3OH (H2L2 = 4,4′-dibromo-2,2′-[ethylenedioxybis(nitrilomethylidyne)]diphenol) constructed from a half-Salamo-based ligand (HL1 = 2-[O-(1-ethyloxyamide)]oxime-4-bromophenol) and Co(OAc)2·4H2O, has been synthesized and characterized by elemental analyses, infrared spectra (IR), UV-Vis spectra, X-ray crystallography and Hirshfeld surface analysis. The Co(II) complex contains three Co(II) atoms, two completely deprotonated (L2)2− units, two bridged acetate molecules, two coordinated methanol molecules and two crystalline methanol molecules, and finally, a three-dimensional supramolecular structure with infinite extension was formed. Interestingly, during the formation of the Co(II) complex, the ligand changed from half-Salamo-like to a symmetrical single Salamo-like ligand due to the bonding interactions of the molecules. In addition, the antimicrobial activities of HL1 and its Co(II) complex were also investigated.


Author(s):  
Younesse Ait Elmachkouri ◽  
Asmaa Saber ◽  
Ezaddine Irrou ◽  
Bushra Amer ◽  
Joel T. Mague ◽  
...  

The title molecule, C17H26N2O, adopts an L-shaped conformation, with the straight n-decyl chain positioned nearly perpendicular to the dihydrobenzimidazole moiety. The dihydrobenzimidazole portion is not quite planar as there is a dihedral angle of 1.20 (6)° between the constituent planes. In the crystal, N—H...O hydrogen bonds form inversion dimers, which are connected into the three-dimensional structure by C—H...O hydrogen bonds and C—H...π(ring) interactions. Hirshfeld surface analysis indicates that the most important contributions for the crystal packing are from H...H (75.9%), H...C/C...H (12.5%) and H...O/O...H (7.0%) interactions. Based on computational chemistry using the CE–B3LYP/6–31 G(d,p) energy model, C—H...O hydrogen bond energies are −74.9 (for N—H...O) and −42.7 (for C—H...O) kJ mol−1.


2018 ◽  
Vol 74 (12) ◽  
pp. 1887-1890 ◽  
Author(s):  
Sevgi Kansiz ◽  
Mustafa Macit ◽  
Necmi Dege ◽  
Vadim A. Pavlenko

The title Schiff base compound, C22H28ClNO, shows mirror symmetry with all its non-H atoms, except thetert-butyl groups, located on the mirror plane. There is an intramolecular O—H...N hydrogen bond present forming anS(6) ring motif. In the crystal, the molecules are connected by C—H...π interactions, generating a three-dimensional supramolecular structure. Hirshfeld surface analysis and two dimensional fingerprint plots were used to analyse the intermolecular interactions present in the crystal, indicating that the most important contributions for the crystal packing are from H...H (68.9%) and C...H/H...C (11.7%) interactions.


Author(s):  
Farid N. Naghiyev ◽  
Maria M. Grishina ◽  
Victor N. Khrustalev ◽  
Ali N. Khalilov ◽  
Mehmet Akkurt ◽  
...  

In the title compound, C28H21N3O, the 1,2-dihydropyridine ring of the 1,2,7,8-tetrahydroisoquinoline ring system is planar as expected, while the cyclohexa-1,3-diene ring has a twist-boat conformation, with Cremer–Pople parameters Q T = 0.367 (2) A, θ = 117.3 (3)° and φ = 327.3 (4)°. The dihedral angles between the best planes through the isoquinoline ring system and the three phenyl rings are 81.69 (12), 82.45 (11) and 47.36 (10)°. In the crystal, molecules are linked via N—H...O and C—H...N hydrogen bonds, forming a three-dimensional network. Furthermore, the crystal packing is dominated by C—H...π bonds with a strong interaction involving the phenyl H atoms. The role of the intermolecular interactions in the crystal packing was clarified using Hirshfeld surface analysis, and two-dimensional fingerprint plots indicate that the most important contributions to the crystal packing are from H...H (46.0%), C...H/H...C (35.1%) and N...H/H...N (10.5%) contacts.


Author(s):  
Dmitriy F. Mertsalov ◽  
Maryana A. Nadirova ◽  
Elena A. Sorokina ◽  
Marina A. Vinokurova ◽  
Sevim Türktekin Çelikesir ◽  
...  

The title compound, C24H24N2O5S, crystallizes with two independent molecules (A and B) in the asymmetric unit. In the central ring systems of both molecules, the tetrahydrofuran rings adopt envelope conformations, the pyrrolidine rings adopt a twisted-envelope conformation and the six-membered ring is in a boat conformation. In molecules A and B, the nine-membered groups attached to the central ring system are essentially planar (r.m.s. deviations of 0.002 and 0.003 Å, respectively). They form dihedral angles of 64.97 (9) and 56.06 (10)°, respectively, with the phenyl rings. In the crystal, strong intermolecular O—H...O hydrogen bonds and weak intermolecular C—H...O contacts link the molecules, forming a three-dimensional network. In addition weak π–π stacking interactions [centroid-to centroid distance = 3.7124 (13) Å] between the pyrrolidine rings of the nine-membered groups of A molecules are observed. Hirshfeld surface analysis and two-dimensional fingerprint plots were used to quantify the intermolecular interactions present in the crystal, indicating that the environments of the two molecules are very similar. The most important contributions for the crystal packing are from H...H (55.8% for molecule A and 53.5% for molecule B), O...H/H...O (24.5% for molecule A and 26.3% for molecule B) and C...H/H...C (12.6% for molecule A and 15.7% for molecule B) interactions.


Author(s):  
Tuncer Hökelek ◽  
Vijdan Yavuz ◽  
Hakan Dal ◽  
Hacali Necefoğlu

In the crystal of the title complex, [Cu(C7H6NO4S)2(C6H6N2O)2(H2O)], the CuIIcation and the O atom of the coordinated water molecule reside on a twofold rotation axis. The CuIIion is coordinated by two carboxylate O atoms of the two symmetry-related 4-sulfamoylbenzoate (SB) anions and by two N atoms of the two symmetry-related nicotinamide (NA) molecules at distances of 1.978 (2) and 2.025 (3) Å, respectively, forming a slightly distorted square-planar arrangement. The distorted square-pyramidal coordination environment is completed by the water O atom in the axial position at a distance of 2.147 (4) Å. In the crystal, the molecules are linkedviaO—H...O and N—H...O hydrogen bonds withR22(8) andR22(18) ring motifs, forming a three-dimensional architecture. The Hirshfeld surface analysis of the crystal structure indicates that the most important contributions for the crystal packing are from H...O/O...H (42.2%), H...H (25.7%) and H...C/C...H (20.0%) interactions.


2018 ◽  
Vol 74 (10) ◽  
pp. 1513-1516 ◽  
Author(s):  
Sevgi Kansiz ◽  
Mustafa Macit ◽  
Necmi Dege ◽  
Galyna G. Tsapyuk

In the title Schiff base compound, C23H23NO, the two ring systems are twisted by 51.40 (11)° relative to each other. In the crystal, the molecules are connected by weak C—H...π interactions, generating a three-dimensional supramolecular structure. Hirshfeld surface analysis and two-dimensional fingerprint plots indicate that the most important contributions to the crystal packing are from H...H (67.2%), C...H/H...C (26.7%) and C...C (2.5%) interactions.


Sign in / Sign up

Export Citation Format

Share Document