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Bis(μ-cyclo-hexane-1,4-dicarboxyl-ato)bis-{aqua-[1-(1H-imidazo[4,5-f][1,10]phenanthrolin-2-yl)naphthalen-2-ol]cadmium} monohydrate.

ABSTRACT: The asymmetric unit of the title compound, [Cd(2)(C(8)H(10)O(4))(2)(C(23)H(14)N(4)O)(2)(H(2)O)(2)]·H(2)O, consists of one half of the dimeric complex, which lies about an inversion centre, and a half-occupancy solvent water mol-ecule on a general position. Each Cd(II) cation is six-coordinated by the two N atoms from one 1-(1H-imidazo[4,5-f][1,10]phenanthrolin-2-yl)naphthalen-2-ol (L) ligand and three O atoms from two different 1,4-chdc(2-) ligands (1,4-H(2)chdc = cyclo-hexane-1,4-dicarb-oxy-lic acid), two coordinating in a bidentate fashion and the other in a monodentate fashion. The distorted octa-hedral coordination sphere is completed by a coordinated water mol-ecule. The Cd(II) atoms are each bridged by two 1,4-chdc(2-) ligands, forming an inversion dimer with the L ligands located on the outside of the dimeric unit. An intra-molecular N-H⋯O hydrogen bond occurs. In the crystal, O-H⋯O and N-H⋯O hydrogen-bonding inter-actions stabilize the packing.

SUBMITTER: Wang XY

PROVIDER: S-EPMC3051929 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Bis(?-cyclo-hexane-1,3-dicarboxyl-ato)-?O:O,O;?O,O:O-bis-[aqua-(1,10-phenanthroline-?N,N')zinc(II)].

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Project description:In the title compound, [Cd(2)(C(7)H(3)NO(4))(2)(C(13)H(8)N(4))(2)(H(2)O)(2)], the Cd(II) ion is six-coordinated by two N atoms from a 1H-imidazo[4,5-f][1,10]phenanthroline (IP) ligand, one N atom and one O atom from a pyridine-2,3-dicarboxyl-ate (pdc) ligand, one O atom from another pdc ligand and one water mol-ecule in a distorted octa-hedral geometry. Two Cd(II) ions are bridged by a pair of pdc ligands, forming a centrosymmetric dinuclear structure. Neighboring dinuclear units are linked by the coordinated water mol-ecules through O-H?N and O-H?O hydrogen bonds, forming a layer parallel to (011). The layers are further linked into a three-dimensional network through N-H?O hydrogen bonds. ?-? inter-actions between the IP ligands further stabilize the supra-molecular structure [centroid-centroid distances = 3.579?(3), 3.686?(3), 3.710?(3), 3.766?(3) and 3.841?(3)?Å].

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Project description:In the mononuclear title complex, [Ni(C(12)H(8)N(2)O)(2)(H(2)O)(2)](NO(3))(2), the Ni(II) ion is coordinated in a distorted octa-hedral geometry. The dihedral angle between the two mean planes defined by the phenanthroline ligands is 88.26?(6)°. Intra- and intermolecular O-H?O hydrogen bonds between the cation and the anions lead to the formation of a layered arrangement parallel to (010).

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Aqua-(4-hydroxy-pyridine-2,6-dicarboxyl-ato)(1,10-phenanothroline)copper(II) 4.5-hydrate.

Project description:The title compound, [Cu(C(7)H(3)NO(5))(C(12)H(8)N(2))(H(2)O)]·4.5H(2)O or [Cu(hypydc)(phen)(H(2)O)]·4.5H(2)O (phen is 1,10-phenanthroline and hypydcH(2) is 4-hydroxy-pyridine-2,6-dicarboxylic acid), was obtained by the reaction of copper(II) nitrate hexa-hydrate with the proton-transfer compound (phenH)(2)(hypydc) in aqueous solution. Both the cationic and the anionic fragments of the proton-transfer compound are involved in complexation. Each Cu(II) atom has a distorted octa-hedral geometry. It is hexa-coordinated by three O atoms and three N atoms, from one phen fragment (as bidentate ligand), one (hypydc)(2-) unit (as tridentate ligand) and a water mol-ecule. In the crystal structure, O-H⋯O and C-H⋯O hydrogen bonds, and π-π stacking inter-actions [centroid-to-centroid distance 3.5642 (11) Å] between the phen ring systems, contribute to the formation of a three-dimensional supra-molecular structure.

| S-EPMC2915167 | biostudies-literature

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