A one-dimensional copper(II) coordination polymer incorporating succinate and N,N-diethylethylenediamine ligands: crystallographic analysis, vibrational and surface features, and DFT analysis

Crystal structure and Hirshfeld surface analysis of one-dimensional copper(II) coordination polymer incorporating succinate and tetra-methyl-ethylene-diamine ligands

The reaction of copper nitrate with succinic acid (succH) and N,N,N',N'-tetra-methyl-ethylenedi-amine (TMEDA) in basic solution produces the complex catena-poly[[[(N,N,N',N'-tetra-methyl-ethylenedi-amine-κ2 N,N')copper(II)]-μ-succinato-κ2 O 1:O 4] tetra-hydrate], {[Cu(C4H4O4)(C6H16N2)]·4H2O} n or {[Cu(succ)(tmeda)]·4H2O} n . Each carboxyl-ate group of the succinate ligand coordinates to a CuII atom in a monodentate fashion, giving rise to a distorted square-planar geometry. The succinate ligands bridge the CuII centres, forming one-dimensional polymeric chains. Hydrogen bonds between the ligands and water mol-ecules link these chains into sheets that lie parallel to the ac plane. Hirshfeld surface analysis, d norm and two-dimensional fingerprint plots were examined to verify the contributions of the different inter-molecular contacts within the supra-molecular structure.

Crystal structure and Hirshfeld surface analysis of a copper(II) complex with ethyl-enedi-amine and non-coordinated benzoate

In the title compound, di-aqua-bis-(ethyl-enedi-amine-κ2 N,N')copper(II) bis-(2-nitro-benzoate), [Cu(C2H8N2)2(H2O)2](C7H4NO4)2, two di-aqua-bis-(ethyl-enedi-amine)-copper(II) cations and four nitro-benzoate anions are present in the asymmetric unit. All four anions are 'whole-mol-ecule' disordered over two sets of sites. The major components have refined occupancies of 0.572 (13), 0.591 (9), 0.601 (9) and 0.794 (10). The CuII ions exhibit slightly distorted octa-hedral geometries. In the crystal, cations and anions are connected to each other via N-H⋯O and O-H⋯O hydrogen bonds, forming a two-dimensional network parallel to (200). The inter-molecular contacts in the crystal were further analysed using Hirshfeld surface analysis, which indicates that the most significant contacts are O⋯H/H⋯O (42.9%), followed by H⋯H (35.7%), C⋯H/H⋯C (14.2%), C⋯C (2.9%), C⋯O/O⋯C (2.2%), N⋯H/H⋯N (0.9%) and N⋯O/O⋯N (0.3%).

Crystal structure and Hirshfeld surface analysis of 2,2'-{(1E,1'E)-[ethane-1,2-diylbis(aza-nylyl-idene)]bis-(methanylyl-idene)}bis-[4-(tri-fluoro-meth-oxy)phenol]copper(II) hydro-quinone hemisolvate

In the title com-plex, [Cu(C18H12F6N2O4)]·0.5C6H6O2, the CuII ion has a square-planar coordination geometry, being ligated by two N and two O atoms of the tetra-dentate open-chain Schiff base ligand 6,6'-{(1E,1'E)-[ethane-1,2-diylbis(aza-nylyl-idene)]bis-(methanylyl-idene)}bis-[2-(tri-fluoro-meth-oxy)phenol]. The crystal packing is stabilized by intra-molecular O-H⋯O and inter-molecular C-H⋯F, C-H⋯O and C-H⋯π hydrogen bonds. In addition, weak π-π inter-actions form a three-dimensional structure. Hirshfeld surface analysis and two-dimensional fingerprint plots were performed and created to analyze the inter-molecular inter-actions present in the crystal, indicating that the most important contributions for the crystal packing are from F⋯H/H⋯F (25.7%), H⋯H (23.5%) and C⋯H/H⋯C (12.6%) inter-actions.

Synthesis, crystal structure, spectroscopic features and Hirshfeld surfaces of 2-methyl-3-[(2-methyl-phen-yl)carbamo-yl]phenyl acetate

The title compound, C17H17NO3, was synthesized, characterized by IR spectroscopy and its crystal structure was determined from single-crystal diffraction data. The asymmetric unit contains two mol-ecules, which adopt different conformations. In one mol-ecule, the acet-oxy and the terminal 2-methyl-phenyl groups are positioned on opposite sides of the plane formed by the central benzene ring, whereas in the other mol-ecule they lie on the same side of this plane. In the crystal, the mol-ecules are linked through strong N-H⋯O hydrogen bonds into chains along [010]. Hirshfeld surface analysis and fingerprint plots were used to investigate the inter-molecular inter-actions in the solid state.

Crystal structure and Hirshfeld surface analysis of (succinato-κO)[N,N,N',N'-tetra-kis-(2-hy-droxy-eth-yl)ethyl-enedi-amine-κ5 O,N,N',O',O'']nickel(II) tetra-hydrate

In the title compound, [Ni(C10H24N2O4)(C4H4O4)]·4H2O, the NiII cation is octa-hedrally coordinated by one O atom of the succinate anion and three O atoms and two N atoms from an N,N,N',N'-tetra-kis-(2-hy-droxy-eth-yl)ethyl-enedi-amine mol-ecule. In the crystal, mol-ecules are linked by O-H⋯O and C-H⋯O hydrogen bonds, forming a three-dimensional supra-molecular architecture. Hirshfeld surface analyses and two-dimensional fingerprint plots were used to analyse the inter-molecular inter-actions present in the crystal, indicating that the most important contributions for the crystal packing are from H⋯H (63.3%) and H⋯O/O⋯H (34.5%) inter-actions.

Crystal structure and Hirshfeld surface analysis of (E)-2,4-di-tert-butyl-6-[(3-chloro-4-methyl-phenyl-imino)-meth-yl]phenol

The title Schiff base compound, C22H28ClNO, shows mirror symmetry with all its non-H atoms, except the tert-butyl groups, located on the mirror plane. There is an intra-molecular O-H⋯N hydrogen bond present forming an S(6) ring motif. In the crystal, the mol-ecules are connected by C-H⋯π inter-actions, generating a three-dimensional supra-molecular structure. Hirshfeld surface analysis and two dimensional fingerprint plots were used to analyse the inter-molecular inter-actions 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%) inter-actions.

Synthesis, crystallographic analysis and Hirshfeld surface analysis of 4-bromo-2-{[2-(5-bromo-2-nitro-phen-yl)hydrazin-1-yl-idene]meth-yl}-5-fluoro-phenol

The title compound, C13H8Br2FN3O3, is nearly planar with a dihedral angle of 10.6 (4)° between the two benzene rings. Intra-molecular N-H⋯O and O-H⋯N hydrogen bonds occur. In the crystal, the mol-ecules are linked by weak C-H⋯O and C-H⋯Br hydrogen bonds. The roles of the inter-molecular inter-actions in the crystal packing were clarified using Hirshfeld surface analysis.

Crystal structure and Hirshfeld surface analysis of 4-[4-(1H-benzo[d]imidazol-2-yl)phen-oxy]phthalo-nitrile monohydrate

In the title compound, C21H12N4O·H2O, the five-membered ring is essentially planar with a maximum deviation of 0.004 (2) Å. An N-H⋯O hydrogen bond connects the organic and water mol-ecules. In the crystal, O-H⋯N hydrogen bonds link mol-ecules into a two-dimensional network parallel to (100). Hirshfeld surface analyses and two-dimensional fingerprint plots were used to qu-antify the inter-molecular inter-actions present in the crystal, indicating that the most important contributions for the crystal packing are from H⋯H (28.7%), C⋯H/H⋯C (27.1%), N⋯H/H⋯N (26.4%), C⋯N/N⋯C (6.1%), O⋯H/H⋯O (3.7%) and C⋯C (6.0%) inter-actions.

Crystal structure and Hirshfeld surface analysis of 7-eth-oxy-5-methyl-2-(pyridin-3-yl)-11,12-di-hydro-5,11-methano-[1,2,4]triazolo[1,5-c][1,3,5]benzoxadiazo-cine

In the crystal, N—H⋯N hydrogen bonds link the mol­ecules into the supra­molecular chains propagating along the c-axis direction.

The title compound, C₁₉H₁₉N₅O₂, was prepared by the reaction of 3-amino-5-(pyridin-3-yl)-1,2,4-triazole with acetone and 2-hy­droxy-3-eth­oxy­benzaldehyde. It crystallizes from ethanol in a tetra­gonal space group, with one mol­ecule in the asymmetric unit. The 1,2,4-triazole five-membered ring is planar (maximum deviation = 0.0028 Å). The pyridine and phenyl rings are also planar with maximum deviations of 0.0091 and 0.0094 Å, respectively. In the crystal, N—H⋯N hydrogen bonds link the mol­ecules into supra­molecular chains propagating along the c-axis direction. Hirshfeld surface analysis and two-dimensional fingerprint plots have been used to analyse the inter­molecular inter­actions present in the crystal.

Synthesis, crystal structure and Hirshfeld surface analysis of tetra-aqua-bis-(isonicotinamide-κN1)cobalt(II) fumarate

The reaction of cobalt(II) with fumaric acid (H2fum) and isonicotinamide in a basic solution produces the title salt, [Co(C6H6N2O)2(H2O)4](C4H2O4). In the complex cation, the CoII atom, located on an inversion centre, is coordinated by two isonicotinamide and four water mol-ecules in a distorted N2O4 octa-hedral geometry. The fumarate anion is located on another inversion centre and is linked to neighbouring complex cations via O-H⋯O and N-H⋯O hydrogen bonds and weak C-H⋯O hydrogen bonds. In the crystal, the complex cations are further linked by O-H⋯O, N-H⋯O and weak C-H⋯O hydrogen bonds, forming a three-dimensional supra-molecular architectecture. Hirshfeld surface analyses (dnorm surfaces and two-dimensional fingerprint plots) for the title compound are presented and discussed.

Crystal structure of 2,3-dimeth-oxy-N-(4-nitro-phen-yl)benzamide

In the title compound, C15H14N2O5, the benzene rings are nearly coplanar, making a dihedral angle of 4.89 (8)°. An intra-molecular N-H⋯O hydrogen bond occurs between the imino and meth-oxy groups. In the crystal, weak C-H⋯O hydrogen bonds link the mol-ecules into supra-molecular chains propagating along the a-axis direction. π-π stacking is observed between parallel benzene rings of neighbouring chains, the centroid-to-centroid distance being 3.6491 (10) Å. Three-dimensional Hirshfeld surface analyses and two-dimensional fingerprint plots have been used to analyse the inter-molecular inter-actions present in the crystal.