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Catena-Poly[diammonium [diaqua-bis(pyridine-2,4-dicarboxyl-ato-?N,O)cuprate(II)] [[diaqua-copper(II)]-?-pyridine-2,4-dicarboxyl-ato-?N,O:O-[tetra-aqua-cadmium(II)]-?-pyridine-2,4-dicarboxyl-ato-?O:N,O] hexa-hydrate].


ABSTRACT: The title mixed-metal complex, {(NH(4))(2)[Cu(C(7)H(3)NO(4))(2)(H(2)O)(2)][CdCu(C(7)H(3)NO(4))(2)(H(2)O)(6)]·6H(2)O}(n), contains one octa-hedrally coordinated Cd(II) center and two octa-hedrally coordinated Cu(II) centers, each lying on an inversion center. The two Cu(II) atoms are each coordinated by two O atoms and two N atoms from two 2,4-pydc (2,4-H(2)pydc = pyridine-2,4-dicarboxylic acid) ligands in the equatorial plane and two water mol-ecules at the axial sites, thus producing two crystallographically independent [Cu(2,4-pydc)(2)(H(2)O)(2)](2-) metalloligands. One metalloligand exists as a discrete anion and the other connects the Cd(H(2)O)(4) units, forming a neutral chain. O-H?O and N-H?O hydrogen bonds connects the polymeric chains, complex anions, ammonium cations and uncoordinated water mol-ecules into a three-dimensional supra-molecular network.

SUBMITTER: Wang GH 

PROVIDER: S-EPMC2971796 | biostudies-other | 2009 Nov

REPOSITORIES: biostudies-other

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catena-Poly[diammonium [diaqua-bis(pyridine-2,4-dicarboxyl-ato-κN,O)cuprate(II)] [[diaqua-copper(II)]-μ-pyridine-2,4-dicarboxyl-ato-κN,O:O-[tetra-aqua-cadmium(II)]-μ-pyridine-2,4-dicarboxyl-ato-κO:N,O] hexa-hydrate].

Wang Guan-Hua GH   Li Zhi-Gang ZG   Jia Heng-Qing HQ   Hu Ning-Hai NH   Xu Jing-Wei JW  

Acta crystallographica. Section E, Structure reports online 20091114 Pt 12


The title mixed-metal complex, {(NH(4))(2)[Cu(C(7)H(3)NO(4))(2)(H(2)O)(2)][CdCu(C(7)H(3)NO(4))(2)(H(2)O)(6)]·6H(2)O}(n), contains one octa-hedrally coordinated Cd(II) center and two octa-hedrally coordinated Cu(II) centers, each lying on an inversion center. The two Cu(II) atoms are each coordinated by two O atoms and two N atoms from two 2,4-pydc (2,4-H(2)pydc = pyridine-2,4-dicarboxylic acid) ligands in the equatorial plane and two water mol-ecules at the axial sites, thus producing two crysta  ...[more]

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