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Tris(1,10-phenanthroline)nickel(II) dichromate tetra-hydrate.

ABSTRACT: The asymmetric unit of the title compound, [Ni(C(12)H(8)N(2))(3)][Cr(2)O(7)]·4H(2)O, contains one cation, one anion and four water mol-ecules, three of which are disordered over two sites with equal occupancies. In the cation, the metal centre is coordinated by six N atoms from three 1,10-phenanthroline ligands in a distorted octa-hedral geometry. The [Cr(2)O(7)](2-) anion exhibits a staggered conformation. The crystal packing is stabilized by inter-molecular O-H?O hydrogen bonds and ?-? inter-actions, evidenced by short distances of 3.531?(5)?Å between the centroids of aromatic rings.

SUBMITTER: Liu HX

PROVIDER: S-EPMC2979795 | biostudies-literature | 2010 Jan

REPOSITORIES: biostudies-literature

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Tris(1,10-phenanthroline)nickel(II) dichromate tetra-hydrate.

Liu Hai-Xing HX

Acta crystallographica. Section E, Structure reports online 20100113 Pt 2

The asymmetric unit of the title compound, [Ni(C(12)H(8)N(2))(3)][Cr(2)O(7)]·4H(2)O, contains one cation, one anion and four water mol-ecules, three of which are disordered over two sites with equal occupancies. In the cation, the metal centre is coordinated by six N atoms from three 1,10-phenanthroline ligands in a distorted octa-hedral geometry. The [Cr(2)O(7)](2-) anion exhibits a staggered conformation. The crystal packing is stabilized by inter-molecular O-H⋯O hydrogen bonds and π-π inter-a ...[more]

PMID: 21579624

Similar Datasets

Tris(1,10-phenanthroline-?N,N')nickel(II) dinitrate tetra-hydrate.

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Project description:The title complex, [Ni(C(12)H(8)N(2))(2)(H(2)O)(2)][Ni(CN)(4)]·C(4)H(8)O·H(2)O, consists of a cationic [Ni(C(12)H(8)N(2))(2)(H(2)O)(2)](2+) unit, an anionic [Ni(CN)(4)](2-) unit, one uncoordinated water and one tetra-hydro-furan mol-ecule. In the cationic unit, the Ni(2+) atom is coordinated by four N atoms and two O atoms from two 1,10-phenanthroline ligands and two water mol-ecules in a distorted octa-hedral coordination environment. In the anionic unit, the Ni(2+) atom is in a square-planar coordination by four C atoms from four monodentate terminal cyanide ligands. O-H⋯N and O-H⋯O hydrogen bonds link neighboring cationic and anionic units, forming a three-dimensional supra-molecular network. The inter-stitial tetra-hydro-furan mol-ecule is independently disordered over two sites in a 1:1 ratio.

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Project description:Single crystals of the title heterometallic compound, [Fe(C(12)H(8)N(2))(3)][Cr(NCS)(4)(C(12)H(8)N(2))](2)·3CH(3)CN·H(2)O or [Fe(Cphen)(3)][Cr(NCS)(4)(phen)](2)·3CH(3)CN·H(2)O, were pre-pared using the one-pot open-air reaction of iron powder, Reineckes salt and 1,10-phenanthroline (phen) in acetonitrile. The asymetric unit consists of an [Fe(phen)(3)](2+) cation, two [Cr(phen)(NCS)(4)](-) anions, three acetonitrile solvent mol-ecules and a water mol-ecule. The Fe and Cr atoms both show a slightly distorted octa-hedral FeN(6) and CrN(6) coordination geometry with adjacent angles in the range 79.67?(12)-95.21?(12)°. No classical hydrogen bonding involving the water molecule is observed.

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

Project description: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 2.094?(2)?Å. The dihedral angles between the three chelating NCCN groups to each other are 85.71?(3), 73.75?(2) and 85.71?(3)°, respectively. The Ni cation, the phenyl ring of the 1,10-phenanthroline ligand and the lattice water molecule are located on special positions (site symmetry 2). In the crystal, the uncoordinated 2,4,5-tricarb-oxy-benzeno-ate anions join with each other through O-H?O hydrogen bonds, forming a two-dimensional hydrogen-bonded layer structure along the bc plane. The layers are further linked via additional O-H?O inter-actions between water and carboxyl groups, resulting in a three-dimensional supra-molecular network.

| S-EPMC3238718 | biostudies-literature

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