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Diaqua-bis(1,3-propane-diamine)nickel(II) squarate tetrahydrate.

ABSTRACT: The asymmetric unit of the title compound, [Ni(C(3)H(10)N(2))(2)(H(2)O)(2)](C(4)O(4))·4H(2)O, contains one-half of the diaqua-bis(1,3-propane-diamine)nickel(II) cation, one-half of the centrosymmetric squarate anion and two uncoordinated water mol-ecules. In the cation, the Ni(II) atom is located on a crystallographic inversion centre and has a slightly distorted octa-hedral coordination geometry. The six-membered chelate ring adopts a chair conformation. O-H?O hydrogen bonds link the cation and anion through the water mol-ecule, while N-H?O hydrogen bonds link the cation and anion and cation and water mol-ecules. In the crystal structure, inter-molecular O-H?O and N-H?O hydrogen bonds link the mol-ecules into a three-dimensional network structure.

SUBMITTER: Temel E

PROVIDER: S-EPMC2969320 | biostudies-literature | 2009 Jun

REPOSITORIES: biostudies-literature

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Diaqua-bis(1,3-propane-diamine)nickel(II) squarate tetrahydrate.

Temel Ersin E Erer Hakan H Yeşilel Okan Zafer OZ Büyükgüngör Orhan O

Acta crystallographica. Section E, Structure reports online 20090606 Pt 7

The asymmetric unit of the title compound, [Ni(C(3)H(10)N(2))(2)(H(2)O)(2)](C(4)O(4))·4H(2)O, contains one-half of the diaqua-bis(1,3-propane-diamine)nickel(II) cation, one-half of the centrosymmetric squarate anion and two uncoordinated water mol-ecules. In the cation, the Ni(II) atom is located on a crystallographic inversion centre and has a slightly distorted octa-hedral coordination geometry. The six-membered chelate ring adopts a chair conformation. O-H⋯O hydrogen bonds link the cation and ...[more]

PMID: 21582677

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Diaqua-bis-(propane-1,3-diamine)-nickel(II) bis-(propane-1,3-diamine)-disulfato-nickelate(II).

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Project description:There are three different Mn(II) complexes in the asymmetric unit of the title compound, [Mn(C(15)H(16)N(4))(H(2)O)(2)]Br(2)·2{[MnBr(C(15)H(16)N(4))(H(2)O)]Br}·[MnBr(2)(C(15)H(16)N(4))]. In the neutral complex, the Mn(2+) ion is six-coordinated in a distorted octa-hedral environment by four N atoms of the tetra-dentate ligand N,N'-bis-(2-pyridylmethyl-ene)propane-1,3-diamine (bppd) and two bromide ligands. In the two cationic complexes, the Mn(2+) ions are also six-coordinated in similar environments, but one Mn ion is coordinated by four N atoms of bppd, one Br atom and one O atom of a coordinating water mol-ecule, whereas the other Mn ion is coordinated by four N atoms of bppd and two O atoms of water ligands. The complexes with two coordinated Br atoms or two H(2)O ligands are disposed about a twofold axis through Mn and C atoms with the special positions (, y, 0) and (0, y, ), respectively. The compound displays inter-molecular O-H?Br hydrogen bonding. There are inter-molecular ?-? inter-actions between adjacent pyridine rings, with centroid-centroid distances of 3.822 and 3.833 Å, and a C-H?O inter-action is also present.

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catena-Poly[[[diaqua-copper(II)]-bis-[?(2)-1,3-bis-(1,2,4-triazol-1-yl)propane]] dinitrate monohydrate].

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| S-EPMC2970232 | biostudies-literature

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