Yun Gong

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In the crystal structure of the title compound, (C(12)H(12)N(4)O(2))(2)[Mo(8)O(26)], the amino and pyridinium groups of the N(1),N(2)-di(pyridinium-4-yl)oxalamide cations are hydrogen bonded to the O atoms of the centrosymmetric isopolyoxometalate β-[Mo(8)O(26)](4-) anions, forming a three-dimensional supra-molecular architecture.
In the centrosymmetric dinuclear compound, [Co 2 Cl 4-(C 4 H 8 N 4) 2 ], the Co II atom is coordinated by N atoms from two 3,5-dimethyl-1,2,4-triazol-4-amine ligands and two Cl atoms in a distorted tetrahedral geometry. A six-membered ring is formed by four N atoms from two ligands and the two Co II centers; the CoÁ Á ÁCo distance is 3.756 (9) A ˚ .
In the crystal structure of the title compound, [Co(C(10)H(4)Cl(2)NO(2))(2)](n), the Co(II) cation lies on a twofold rotation axis. Each cation is N,O-chelated by the carboxyl-ate anions of two 3,7-dichloro-quinoline-8-carboxyl-ate ligands. The second carboxyl-ate O atom of each ligand coordinates to the Co(II) cation of an adjacent mol-ecule, linking the(More)
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