(E)-4-(2-Chloro-1-hy-droxy-2,6,6-tri-methyl-cyclo-hex-yl)but-3-en-2-one.

In the title mol-ecule, C13H21ClO2, there is an intra-molecular C-H⋯Cl hydrogen bond. The conformation about the C=C bond is E and the six-membered ring has a chair conformation. In the crystal, mol-ecules are linked by pairs of O-H⋯O hydrogen bonds, forming inversion dimers, which are consolidated by C-H⋯O hydrogen bonds.

Cyano-methanaminium perchlorate.

In the crystal of the title salt, C2H5N2(+)·ClO4(-), the cations and anions are connected via N-H⋯O and C-H⋯O hydrogen bonds, forming a three-dimensional network.

Bis(1,10-phenanthroline-κ(2) N,N')(sulfato-O)copper(II) propane-1,3-diol monosolvate.

In the title compound, [Cu(SO4)(C12H8N2)2]·C3H8O2, the Cu(II) ion is bonded to two chelating 1,10-phenanthroline (phen) ligands and one O atom from a monodentate sulfate ligand in a distorted square-based pyramidal arrangement, with the O atom in a basal site. The two chelating N2C2 groups subtend a dihedral angle of 71.10 (15)°.

Bis(1,10-phenanthroline-κ(2) N,N')(sulfato-κ(2) O,O')nickel(II) butane-2,3-diol monosolvate.

In the title compound, [Ni(SO4)(C12H8N2)2]·C4H10O2, the Ni(II) ion is six-coordinated by four N atoms from two chelating 1,10-phenanthroline ligands and two O atoms from an O,O'-bidentate sulfate anion, resulting in a distorted octa-hedral geometry for the metal ion. The dihedral angle between the two chelating N2C2 groups is 83.82 (12)°.

4-Diphenyl-phosphanyl-1,5-naphthyridine.

The asymmetric unit of the title compound, C(20)H(15)N(2)P, contains two independent mol-ecules with similar structures. The 1,5-naphthyridine ring system is nearly planar, with maximum deviations of 0.010 (3) and 0.

Diethyl 3,3'-(phenyl-methyl-ene)bis-(1H-indole-2-carboxyl-ate).

In the title compound, C(29)H(26)N(2)O(4), the benzene ring is twisted by 73.5 (5) and 84.9 (3)° with respect to the mean planes of the two indole ring systems; the mean planes of the indole ring systems are oriented at a dihedral angle of 82.

Poly[diaqua-(μ(4)-2,5-dicarb-oxy-benzene-1,4-dicarboxyl-ato-κ(4)O(1):O(2):O(4):O(5))(μ(2)-2,5-dicarb-oxy-benzene-1,4-dicarboxyl-ato-κ(2)O(1):O(4))bis-(1,10-phenanthroline-κ(2)N,N')dimanganese(II)].

In the title compound, [Mn(2)(C(10)H(4)O(8))(2)(C(12)H(8)N(2))(2)(H(2)O)(2)](n), the Mn(2+) ion has a slightly distorted octa-hedral N(2)O(4) coordination geometry being coordinated by one aqua O atom, two N atoms of the chelating 1,10-phenanthroline ligand and three carboxyl O atoms from three 2,5-dicarb-oxy-benzene-1,4-dicarboxyl-ate (H(2)btec(2-)) ligands. The H(2)btec(2-) anion exhibits two different coordination modes, viz. μ(2) and μ(4).

A novel one-dimensional Co(II) coordination polymer: catena-poly[[hexaaquacobalt(II)] [[diaquabis(sulfato-κO)cobalt(II)]-μ-4,4'-bipyridine-κ2N:N'] [[triaqua(sulfato-κO)cobalt(II)]-μ-4,4'-bipyridine-κ2N:N']].

The title compound, {[Co(H(2)O)(6)][Co(SO(4))(C(10)H(8)N(2))(H(2)O)(3)][Co(SO(4))(2)(C(10)H(8)N(2))(H(2)O)(2)]}(n), contains three crystallographically unique Co(II) centres, all of which are in six-coordinated environments. One Co(II) centre is coordinated by two bridging 4,4'-bipyridine (4,4'-bipy) ligands, one sulfate ion and three aqua ligands. The second Co(II) centre is surrounded by two N atoms of two 4,4'-bipy ligands and four O atoms, i.

Tris(1,10-phenanthroline-κ2N,N')iron(II) bis(2,4,5-tricarboxybenzoate) monohydrate and tris(2,2'-bipyridine-κ2N,N')iron(II) 2,5-dicarboxybenzene-1,4-dicarboxylate-benzene-1,2,4,5-tetracarboxylic acid-water (1/1/2).

The title compounds, tris(1,10-phenanthroline-κ(2)N,N')iron(II) bis(2,4,5-tricarboxybenzoate) monohydrate, [Fe(C(12)H(8)N(2))(3)](C(10)H(5)O(8))(2)·H(2)O, (I), and tris(2,2'-bipyridine-κ(2)N,N')iron(II) 2,5-dicarboxybenzene-1,4-dicarboxylate-benzene-1,2,4,5-tetracarboxylic acid-water (1/1/2), [Fe(C(10)H(8)N(2))(3)](C(10)H(4)O(8))·C(10)H(6)O(8)·2H(2)O, (II), were obtained during an attempt to synthesize a mixed-ligand complex of Fe(II) with an N-containing ligand and benzene-1,2,4,5-tetracarboxylic acid via a solvothermal reaction. In both mononuclear complexes, each Fe(II) metal ion is six-coordinated in a distorted octahedral manner by six N atoms from three chelating 1,10-phenanthroline or 2,2'-bipyridine ligands. In compound (I), the Fe(II) atom lies on a twofold axis in the space group C2/c, whereas (II) crystallizes in the space group P2(1)/n.

2-[4-(Azido-meth-yl)phen-yl]benzonitrile.

The title compound, C(14)H(10)N(4), was obtained by a reaction of 4'-(bromo-meth-yl)biphenyl-2-carbonitrile and sodium azide. The dihedral angle between the benzene rings is 46.41 (7)°.

4-[(2'-Cyano-biphenyl-4-yl)meth-yl]morpholin-4-ium perchlorate.

In the title salt, C(18)H(19)N(2)O(+)·ClO(4) (-), the morpholinium ring adopts a chair conformation, while the two benzene rings make a dihedral angle of 62.65 (17)°. Inter-molecular N-H⋯N hydrogen bonds and weak C-H⋯O inter-actions occur in the crystal structure.

4-[(2'-Cyano-biphenyl-4-yl)meth-yl]morpholin-4-ium hexa-fluoridophosphate.

In the cation of the title compound, C(18)H(19)N(2)O(+)·PF(6) (-), the morpholine ring adopts the usual chair conformation and the dihedral angle between the benzene rings is 67.55 (11)°. The F atoms of the anion are disordered over two orientations with a refined occupancy ratio of 0.

Diaqua-bis-(1,10-phenanthroline-κN,N')cadmium sulfate hexa-hydrate.

The title compound, [Cd(C(12)H(8)N(2))(2)(H(2)O)(2)]SO(4)·6H(2)O, was obtained unexpectedly during an attempt to synthesize a cadmium complex with bidentate bridging sulfate ligands via hydro-thermal synthesis. The Cd(II) metal ion is six-coordinated by two chelating 1,10-phenanthroline ligands and two water mol-ecules, resulting in a distorted octa-hedral geometry for the metal ion. The two chelating N(2)C(2) groups are almost perpendicular to each other [dihedral angle = 86.

Tris(1,10-phenanthroline-κN,N')nickel(II) bis-(2,4,5-tricarb-oxy-benzo-ate) monohydrate.

In the title compound, [Ni(C(12)H(8)N(2))(3)](C(10)H(5)O(8))(2)·H(2)O, the Ni(II) cation is coordinated by six N atoms of the three bidentate chelating 1,10-phenanthroline ligands in a slightly distorted octa-hedral coordination geometry. The Ni-N bond lengths range from 2.074 (2) to 2.

3,4-Dimethyl-anilinium 4-methyl-benzene-sulfonate.

In the crystal structure of the title compound, C(8)H(12)N(+)·C(7)H(7)O(3)S(-), N-H⋯O hydrogen bonds link the cations and anions into ribbons parallel to the c axis. N-H⋯S inter-actions also occur.

Bis(1,10-phenanthroline-κN,N')(sulfato-O)copper(II) ethane-1,2-diol monosolvate.

In the title compound, [Cu(SO(4))(C(12)H(8)N(2))(2)]·C(2)H(6)O(2), the Cu(II) ion is five-coordinated in a distorted square-pyramidal manner by four N atoms from two chelating 1,10-phenanthroline (phen) ligands and one O atom from a monodentate sulfate anion. The four N atoms comprise a square and the one O atom the apex of a square pyramid. The two chelating N(2)C(2) groups are oriented at 71.

N-Methyl-2-oxo-1-phenyl-propan-1-aminium chloride.

In the structure of the title compound, C(10)H(14)NO(+)·Cl(-), both H atoms bound to nitro-gen are involved in N-H⋯Cl hydrogen-bonding inter-actions. These inter-actions join the cations and anions into dimeric units (two cations and two anions) with R(4) (2)(8) motifs lying about inversion centers.

Bis(1,10-phenanthroline-κN,N')(sulfato-κO,O')cobalt(II) butane-2,3-diol monosolvate.

In the title compound, [Co(SO(4))(C(12)H(8)N(2))(2)]·C(4)H(10)O(2), the Co(2+) ion has a distorted octa-hedral coordination environment composed of four N atoms from two chelating 1,10-phenanthroline ligands and two O atoms from an O,O'-bidentate sulfate anion. The dihedral angle between the two chelating N(2)C(2) groups is 83.48 (1)°.

Poly[diaquabis(μ-4,4'-bipyridine-κ2N:N')bis(ethane-1,2-diol)di-μ-sulfato-dicopper(II)].

The title compound, [Cu(2)(SO(4))(2)(C(10)H(8)N(2))(2)(C(2)H(6)O(2))(2)(H(2)O)(2)](n), contains two crystallographically unique Cu(II) centres, each lying on a twofold axis and having a slightly distorted octahedral environment. One Cu(II) centre is coordinated by two bridging 4,4'-bipyridine (4,4'-bipy) ligands, two sulfate anions and two aqua ligands. The second is surrounded by two 4,4'-bipy N atoms and four O atoms, two from bridging sulfate anions and two from ethane-1,2-diol ligands.

4'-[4-(Pyridin-2-yl)phen-yl]-2,2':6',2''-terpyridine.

In the title compound, C(26)H(18)N(4), each ring is almost planar with maximum deviation of 0.012 (5) Å. In the crystal, mol-ecules are stacked by weak C-H⋯π inter-actions, forming a three-dimensional framework.

Bis(1,10-phenanthroline-κN,N')(sulfato-κO,O')cadmium(II) propane-1,3-diol solvate.

In the title compound, [Cd(SO(4))(C(12)H(8)N(2))(2)]·C(3)H(8)O(2), the Cd(II) atom has a distorted octa-hedral coordination composed of four N atoms from two chelating 1,10-phenanthroline ligands and two O atoms from an O,O'-bidentate sulfate group. The two chelating NCCN groups subtend a dihedral angle of 82.21 (9)°.

Bis(1,10-phenanthroline-κN,N')(sulfato-κO,O')nickel(II) propane-1,3-diol solvate.

In the structure of the title compound, [Ni(SO(4))(C(12)H(8)N(2))(2)]·C(3)H(8)O(2), the Ni(II) ion (site symmetry 2) is six-coordinated in a distorted octa-hedral manner by four N atoms from two chelating 1,10-phenanthroline (phen) ligands and two O atoms from a bidentate sulfate ligand (2 symmetry). The dihedral angle between the two chelating NCCN groups is 80.9 (1)°.

Bis(1,10-phenanthroline-κN,N')(sulfato-κO,O')cobalt(II) propane-1,3-diol solvate.

The title compound, [Co(SO(4))(C(12)H(8)N(2))(2)]·C(3)H(8)O(2), was obtained unexpectedly as a by-product during an attempt to synthesize a mixed-ligand complex of Co(II) with 1,10-phenanthroline (phen) and melamine via a solvothermal reaction. The Co(II) metal ions are in a distorted octa-hedral coordination environment formed by four N atoms from two chelating phen ligands and two O atoms from a bidentate sulfate ligand. The two chelating N(2)C(2) groups are almost perpendicular to each other [dihedral angle = 80.

Bis(2,2'-bipyridyl-κN,N')(sulfato-κO,O')zinc(II) ethane-1,2-diol solvate.

The title compound, [Zn(SO(4))(C(10)H(8)N(2))(2)]·C(2)H(6)O(2), is a six-coordinate zinc(II) complex with a distorted octa-hedral coordination geometry. The Zn(II) atom is bonded by two O atoms of the bidentate chelating sulfate ligand and four N atoms of the two chelating 2,2'-bipyridine ligands. The Zn-N bond distances range from 2.

Pyridinium 5-nitro-thio-phene-2-carboxyl-ate.

The anion of the title compound, C(5)H(6)N(+)·C(5)H(2)NO(4)S(-), is approximately planar, with the carboxyl-ate and nitro group planes forming dihedral angles of 7.5 (3) and 3.5 (3)°, respectively, with the thio-phene ring.