Project description:In the crystal structure of the title compound, the palladium(II) metal center is surrounded by a bidentate 2,2′-bipyridine ligand and two acetonitrile molecules in a distorted square-planar geometry. In the title complex, [Pd(C10H8N2)(CH3CN)2](CF3SO3)2 or [Pd(bipy)(CH3CN)2](CF3SO3)2, the palladium(II) ion is fourfold coordinated by two acetonitrile molecules and a bidentate 2,2′-bipyridine ligand in a distorted square-planar geometry.
Project description:The ruthenium dication and hexafluoridophosphate anions of the title salt are linked by N—H⋯F hydrogen bonds at the amino group of the substituted pyridine ring. The Ru—N bond lengths show the expected range. The title compound, [Ru(C5H6N2)(C10H8N2)(C15H11N3)](PF6)2 solvent, crystallizes in the triclinic space group P
Project description:The central MnII ion has a cis-N2Br4 octahedral coordination sphere defined by two N atoms of the bidentate 2,2′-bipyridine ligand and four bridging Br− anions. In the polymeric title complex, [MnBr2(C10H8N2)]n, the MnII ion, situated on a twofold axis of symmetry, is six-coordinated in a distorted octahedral coordination geometry defined by two N atoms from the chelating 2,2′-bipyridine ligand and four bridging Br− anions. The crystal reveals a one-dimensional Br-bridged chain along the c-axis direction with a zigzag topology. In the crystals, contacts between chains include π–π interactions between pyridyl rings [inter-centroid separation = 4.082 (1) Å]
Project description:In the crystal structure of the title compound, the central zinc(II) atom is surrounded by a bidentate 4,4′-dimethyl-2,2′-bipyridine ligand and two coordinating chlorides in a distorted tetrahedral shape with π–π stacking interactions contributing to the crystal packing. In the title complex, [ZnCl2(C12H12N2)]·CH3CN, the zinc(II) atom is fourfold coordinated by two chloride ligands and a bidentate 4,4′-dimethyl-2,2′-bipyridine ligand in a distorted tetrahedral shape with a molecule of acetonitrile sitting in the outer coordination sphere of the complex. π–π stacking interactions between the pyridyl rings in adjacent molecules contribute to the alignment of the complexes in columns parallel to the a axis.
Project description:The title compound consists of a centrosymmetric bimetallic complex charge-balanced by free 4-nitrobenzoate anions. Each CoII ion exhibits a distorted cis-CoN2O4 octahedral coordination environment. In the crystal, the dications and anions are linked by O—H⋯O and C—H⋯O hydrogen bonds. The title compound, [Co2(C7H4NO4)2(C10H8N2)2(H2O)4](C7H4NO4)2, consists of a centrosymmetric bimetallic complex charge-balanced by free 4-nitrobenzoate anions. The CoII ion exhibits a distorted cis-CoN2O4 octahedral coordination environment and the Co⋯Co separation is 3.326 (2) Å. In the crystal, the dications and anions are linked by O—H⋯O and C—H⋯O hydrogen bonds.
Project description:The crystal structure of a two-dimensional metal–organic compound constructed from 4,4′-bis[(1H-imidazol-1-yl)methyl]-1,1′-biphenyl (BIMB) and nickel ions is described. Each BIMB ligand adopts a linear linker to connect Ni2+ ions, forming a layer with an sql network. In the crystal, neighboring layers repeat in an ABAB stacking mode, and weak intermolecular C—H⋯Cl hydrogen bonds between alternate layers lead to a three-dimensional, twofold interpenetrated, supramolecular framework with a pcu topology net. In the title compound, [NiCl2(C20H18N4)2]n, the Ni2+ cation is situated on an inversion center and is coordinated by two chloride ions and four imidazole N atoms of four different 4,4′-bis[(1H-imidazol-1-yl)methyl]-1,1′-biphenyl (BIMB), forming a slightly distorted octahedral geometry. Each BIMB ligand adopts a linear linker to connect Ni2+ ions, forming a two-dimensional layer with an sql network. In the crystal, neighboring layers repeat in an ABAB stacking mode, and weak intermolecular C—H⋯Cl hydrogen bonds between alternate layers lead to a three-dimensional, twofold interpenetrated, supramolecular framework with a pcu topology net.
Project description:In the cation of the title compound, [Ru(CH(3)CN)(2)(C(10)H(8)N(2))(2)](BF(4))(2), the Ru(II) atom is six-coordinated in a distorted octa-hedral geometry by the N atoms of the two 2,2'-bipyridine (bpy) ligands and two cis-arranged acetonitrile mol-ecules. The dihedral angles formed by the pyridine rings of the bpy ligands are 8.86 (12) and 10.12 (14)°. In the crystal, the cations and anions are linked by C-H⋯F hydrogen bonds into a three-dimensional network.
Project description:The crystal structure of the title compound consists of discrete octahedral complexes, which are linked by intermolecular C—H⋯S and C—H⋯N hydrogen bonds into chains. Single crystals of the title compound, [Co(NCS)2(C5H4BrN)2(C2H3N)2], were obtained by the reaction of Co(NCS)2 with 3-bromopyridine in acetonitrile. The CoII cations lie on crystallographic inversion centers and are coordinated by two N-bonded thiocyanate anions, two 3-bromopyridine and two acetonitrile ligands thereby forming slightly distorted CoN6 octahedra. In the crystal, these complexes are linked by C—H⋯S and C—H⋯N hydrogen bonds into a three-dimensional network. In the direction of the crystallographic b-axis, the complexes are arranged into columns with neighboring 3-bromopyridine ligands stacked onto each other, indicating π–π interactions. The CN stretching vibration of the thiocyanate anions is observed at 2066 cm−1, in agreement with the presence of only N-bonded anionic ligands. TG-DTA measurements reveal that in the first mass loss the acetonitrile ligands are removed and that in the second step, half of a 3-bromopyridine ligand is lost, leading to the formation of a polymeric compound with the composition [(Co(NCS)2)2(C5H4BrN)3]n already reported in the literature.
Project description:The title compound, trans-[Ru(bpy)(2)(H(2)O)(2)](CF(3)SO(3))(2) (bpy = 2,2'-bipyridine, C(10)H(8)N(2)), crystallized from the decomposition of an aged aqueous solution of a dimeric complex of cis-Ru(bpy)(2) in 0.1 M triflic acid. The Ru(II) ion is located on a crystallographic inversion center and exhibits a distorted octa-hedral coordination with equivalent ligands trans to each other. The Ru-O distance is 2.1053 (16) Å and the Ru-N distances are 2.0727 (17) and 2.0739 (17) Å. The bpy ligands are bent, due to inter-ligand steric inter-actions between H atoms of opposite pyridyl units across the Ru center. The crystal structure exhibits an extensive hydrogen-bonding network involving the water ligands and the trifluoromethane-sulfonate counter-ions within two-dimensional layers, although no close hydrogen-bond inter-actions exist between different layers.