In the title molecule, C7H4N2O2S2, the nitro group is twisted by 5.5 (1)° from the plane of the attached benzene ring. In the crystal, N—H⋯S hydrogen bonds link pairs of molecules into inversion dimers, which are linked by weak C—H⋯O interactions into sheets parallel to (101). The crystal packing exhibits short intermolecular S⋯O contacts of 3.054 (4) Å and π–π interactions of 3.588 (5) Å between the centroids of the five- and six-membered rings of neighbouring molecules.
In the title salt, C10H10N2
−, the complete 4,4′-bipyridine-1,1′-diium dication is generated by a center of symmetry. In the crystal, N—H⋯N hydrogen bonds are observed between the cations and anions.
In the title 1:1 adduct, C10H8N2·C4H6N8S2·, the components are connected through N—H⋯N hydrogen bonds, leading to a two-dimensional structure. The C—S—S—C torsion angle is −83.6 (1)°. The dihedral angle between pyridine rings is 1.86 (15)°.
The title complex, [Ag2(NO2)2(C25H22P2)2]·2CH3CN, is a centrosymmetric dimer in which two bis(diphenylphosphino)methane ligands bridge two Ag+ ions, forming an eight-membered ring with a short Ag⋯Ag separation of 3.1809 (5) Å. The distorted P2O2 coordination of the cation is completed by two O-donors from a symmetric bidentate chelate NO2
− anion [Ag—O = 2.550 (3) and 2.567 (3) Å].
In the title compound, [CuI(C8H8N2S)(C18H15P)2]·CH3OH, the coordination environment around the CuI atom is distorted tetrahedral, defined by two P atoms of two triphenylphosphane ligands, one S atom of a 5-methyl-1H-benzimidazole-2(3H)-thione ligand and one I atom. The complex molecules and the methanol solvent molecules are connected via N—H⋯O and O—H⋯I hydrogen bonds, forming a chain along . An intramolecular N—H⋯I hydrogen bond is also observed.
The title two-component molecular crystal, C10H8N2·C2H4N4S, was obtained unexpectedly by reaction of Zn(NO3)2·6H2O, NH4BF4 with 3-amino-1,2,4-triazole-5-thione (3-AMT) and 4,4′-bipyridine in water. The dihedral angle between the pyridine rings in the 4,4′-bipyridine molecule is 17.00 (13)°. In the crystal, N—H⋯N and N—H⋯S hydrogen bonds between the components lead to the formation of a three-dimensional network. Furthermore, the structure features face-to-face π–π stacking interactions between the 4,4′-bipyridine and triazole rings, with a centroid–centroid distance of 2.976 (2) Å.
The title complex, [Ag(C18H15P)4]BF4, was prepared by the reaction of silver(I) tetrafluoridoborate and triphenylphosphane in the presence of 1,2-bis(pyridin-2-yl)ethylene. The AgI atom is tetrahedrally coordinated by four P atoms from triphenylphosphane (PPh3) ligands. Due to symmetry, the tetrafluoridoborate anion is disordered over three positions (each with one third occupancy). The tetrafluoridoborate anion does not coordinate to the AgI atom.
In the title coordination compound, [Cu(NCS)(C9H7N)(C18H15P)]n, the CuI atom is tetrahedrally coordinated by one N atom from an isoquinoline ligand, one P atom from a triphenylphospane ligand, and one N and one S atom from two thiocyanate anions. The thiocyanide anions bridge the CuI atoms into a chain along . π–π interactions between the pyridine and benzene rings of the isoquinoline ligands connect the chains [centroid-to-centroid distance = 3.722 (3) Å].
In the crystal structure of the title compound, C5H8N4, adjacent molecules are connected through N—H⋯N hydrogen bonds, resulting in a zigzag chain along . The amino groups and heterocyclic N atoms are involved in further N—H⋯N hydrogen bonds, forming R
The title compound, [Cu(C12H8N2)(C27H26P2)]ClO4, crystallizes with two CuI complex cations and two perchlorate anions in the asymmetric unit. Each CuI cation is four-coordinated by two P atoms of a 1,3-bis(diphenylphosphanyl)propane molecule and two N atoms of a 1,10-phenanthroline ligand, with a coordination geometry that can be considered as distorted tetrahedral. The crystal studied was twinned with a twin ratio of 0.786 (2):0.214 (2).
The title compound, C16H6N6, is a polymorph of the previously reported structure [Kozlov & Goldberg (2008 ▶). Acta Cryst. C64, o498–o501]. Unlike the previously reported monoclinic polymorph (space group P21/c, Z = 8), the title compound reveals orthorhombic symmetry (space group Pnma, Z = 4). The molecule shows crystallographic mirror symmetry, while the previously reported structure exhibits two independent molecules per asymmetric unit. In the title compound, adjacent molecules are essentially parallel along the c axis and tend to be vertical along the b axis with dihedral angles of 72.02 (6)°. However, in the reported polymorph, the entire crystal structure shows an antiparallel arrangement of adjacent columns related by inversion centers and the two independent molecules are nearly parallel with a dihedral angle of 2.48 (6)°.
The reaction of nickel salts and 4,4′-bipyridine with 2,2′-biimidazole (H2biim) yielded the title complex, [Ni(C6H6N4)3](NO3)2·C3H7NO. The NiII atom is chelated by three H2biim ligands in a distorted octahedral coordination geometry. The two nitrate anions and one dimethylformamide (DMF) molecule are not coordinated. The compound has a three-dimensional structure, formed by extensive hydrogen bonding between [Ni(H2biim)3]2+ cations and nitrate anions, each nitrate anion forming hydrogen bonds with an R
2(4) motif. The DMF molecule is disordered over three sets of sites, with occupancy ratios of 0.341 (16):0.350 (17):0.309 (19).
The asymmetric unit of the title compound, [Ag(C5H8N4)3](CF3O3S)·C5H8N4, contains two cations, two anions and two uncoordinated 3-amino-5,6-dimethyl-1,2,4-triazine (admt) ligands. It was prepared from the reaction of silver trifluoromethanesulfonate and admt in a 2:3 molar ratio. Both silver(I) ions are bonded to three admt molecules via their 2-position triazine N atoms in almost regular trigonal–planar geometries. Three intramolecular N—H⋯N hydrogen bonds between adjacent admt molecules in each cation help to maintain their overall near planarities (r.m.s. deviations for the 28 non-H atoms = 0.139 and 0.153 Å). In the crystal, numerous N—H⋯N, N—H⋯O, C—H⋯O, C—H⋯N and C—H⋯F hydrogen-bonding interactions link the components into a three-dimensional network.
In the title coordination polymer, [Ag2(NCS)2(C27H26P2)2]n, two centrosymmetrically related Ag+ cations are linked by two thiocyanate anions into binuclear eight-membered macrocycles. The Ag⋯Ag separation within the macrocycle is 5.4400 (6) Å. The distorted tetrahedral coordination about each metal atom is completed by the P atoms of two bridging 1,3-bis(diphenylphosphanyl)propane ligands, forming polymeric ribbons parallel to the a axis.
In the title compound, [Ag(C18H15P)4]CF3O3S·CH2Cl2, the Ag atom is coordinated by four P atoms from four PPh3 ligands. The P—Ag—P angles are in the range 108.02 (6)–110.15 (6)°, which confirms the distorted tetrahedral environment around the Ag atom.
The title compound, [Ag(NCS)(C25H22P2)]n, contains two Ag+ ions, two thiocyanate ions and two bis(diphenylphosphino)methane (dppm) ligands in the asymmetric unit. One of the thiocyanate ions bridges the two Ag+ ions in a μ2-mode from its S atom and the two dppm ligands bridge the silver ions in a μ1,μ1 mode. The remaining SCN− ion bridges the binuclear units via its N and S atoms, generating a one-dimensional polymer propagating in : the resulting AgP2SN and AgP2S2 coordination geometries could be described as distorted tetrahedral.
The asymmetric unit of the title complex, [Ag4W2S8(C25H22P2)3]·2C3H7NO, tris[μ2-bis(diphenylphosphino)methane]-3:6κ2
S-disulfido-1κS,2κS-tetrasilver(I)ditungsten(VI) N,N-dimethylformamide disolvate, contains two [WS4]2− anions, four silver cations, three bidentate–bridging bis(diphenylphosphino)methane (dppm) ligands and two N,N-dimethylformamide (DMF) solvent molecules. The coordination geometry of each Ag atom is distorted tetrahedral. Two Ag ions are coordinated by μ2-S and μ5-S atoms, and by two P atoms from two dppm ligands, while the other two Ag atoms are coordinated by μ2-S, μ3-S and μ5-S atoms, and by one P atom from a dppm ligand.
In the title copper(II) salt, [Cu(C6H6N4)2(C2H6OS)2](BF4)2, the Jahn–Teller distorted octahedral coordination sphere of copper is formed from four 2,2′-bi-1H-imidazole N atoms and two dimethyl sulfoxide O atoms. The Cu atom lies on a center of inversion. N—H⋯O and N—H⋯F hydrogen bonds give rise to a one-dimensional structure. The BF4
− anion is disordered over two sites in a 0.671 (10):0.329 (10) ratio.
The title centrosymmetric complex, [Cu2(CN)2(C26H24P2)3]·2CH3OH, consists of two five-membered [Cu(dppe)CN] rings [dppe is 1,2-bis(diphenylphosphino)ethane] bridged by one μ2-dppe ligand, and two methanol solvent molecules. The angles around the central metal atom indicate that each CuI atom is located in the center of a distorted tetrahedron. The coordination sphere of each CuI atom is formed by three P atoms from two dppe ligands, and one C atom from the cyanide ligand. The crystal structure is stabilized by O—H⋯N hydrogen bonds, which are formed by the O—H donor group from methanol and the N-atom acceptor from a cyanide ligand.
In the title complex, [Ag(ClO4)(CH3OH)(C18H15P)2], the angles around the central Ag+ ion indicate that it is in a distorted tetrahedral coordination. The coordination sphere of silver is formed by two P atoms of two triphenylphosphine ligands, one O atom of a perchlorate anion and one O atom of a methanol molecule. The crystal structure is stablized by a bifurcated intermolecular O—H⋯O hydrogen bond, involving the O—H donor from methanol and two acceptor O atoms from the perchlorate anion, so forming a zigzag chain propagating in .
In the title mononuclear complex, [Cd(C12H8N2)(H2O)4]SO4·2H2O, the coordination geometry around the CdII atom is a distorted octahedron, with two aqua ligands occupying the axial positions. Intermolecular O—H⋯O hydrogen bonds lead to the formation of a two-dimensional layer structure parallel to (001). The layers are connected by π–π interactions between the pyridyl and benzene rings of the phenanthroline ligands [centroid–centroid distances = 3.591 (1) and 3.610 (1) Å].
In the title complex, [Ag(C18H15P)3(ClO4)], the silver coordination environment is dominated by the distorted P3AgO tetrahedron in which Ag—O = 2.608 (12) Å and the Ag—P bond lengths are 2.5663 (17), 2.5076(16) and 2.5450 (17) Å. The perchlorate O-atoms are disordered over two positions in a 0.584 (14):0.416 (14) ratio.
The structure of the title complex, [Ag(C12H8N2)(C18H15P)]CF3SO3, is based on a distorted trigonal–planar N2P coordination of the AgI ion, provided by two N atoms of the bidentate phenanthroline ligand and one P atom of the triphenylphosphine ligand. The phenanthroline ligand and one phenyl ring of the triphenylphosphine ligand almost lie in one plane (maximum deviation = 0.014 Å from the best planes). The crystal structure may be stabilized by an intermolecular C—H⋯O hydrogen bond between the phenanthroline ligand and the O atom of the trifluoromethanesulfonate anion.
In the title compound, [Zn(C10H8N2)(C12H8N2)(H2O)2](NO3)2·0.5C10H8N2·H2O, the ZnII atom is coordinated in a distorted octahedral geometry by two N atoms from two 4,4′-bipyridine (4,4′-bipy) ligands, two N atoms from a chelating 1,10-phenanthroline ligand and two O atoms from two mutually cis water molecules. The 4,4′-bipy ligands bridge the ZnII atoms into a chain structure along . The uncoordinated 4,4′-bipy molecule lies on an inversion center. O—H⋯O and O—H⋯N hydrogen bonds connect the cationic chains, the nitrate anions, the uncoordinated 4,4′-bipy molecules and the water molecules into tow-dimensional networks.
The title complex, [Ag2(C25H22P2)2(C9H7N)2](CF3SO3)2·C9H7N, was prepared by the reaction of silver(I) trifluoromethanesulfonate with isoquinoline and bis(diphenylphosphanyl)methane (dppm). The dinuclear molecule is located about a center of inversion and the AgI atom is coordinated by two dppm P atoms and one isoquinoline N atom, forming an eight-membered metalla ring. In addition, in the asymmetric unit, there is a half-molecule of isoquinoline located about a center of inversion. Since this molecule does not possess this symmetry, for one position in the ring there is superposition of both a C atom of a C—H group and the isoquinoline N atom. In the structure, the Ag—P distances [2.4296 (9) and 2.4368 (9) Å] agree with the corresponding distances in related structures, while the Ag—N bond length [2.489 (3) Å] is slightly longer than that in related structures. On the other hand, the P—Ag—P angle [156.44 (3)°] is much larger than the corresponding angles in related structures. The trifluoromethanesulfonate anions do not coordinate to AgI atoms. As is usually found for these anions, the –CF3 group is disordered over two orientations [occupancies = 0.57 (12) and 0.43 (12)].