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Catena-Poly[[[tetra-aqua-erbium(III)]-?-oxalato-?O,O:O,O] [bromidobis(pyrazine-2-carboxyl-ato-?N,O)cuprate(II)] tetra-hydrate].

ABSTRACT: In the title heterometallic complex, {[Er(C(2)O(4))(H(2)O)(4)][CuBr(C(5)H(3)N(2)O(2))(2)]·4H(2)O}(n), the Er(III) atom is eight-coordin-ated by four O atoms from two centrosymmetric oxalate ligands and four water mol-ecules, displaying a bicapped trigonal-prismatic geometry. The oxalate ligands bridge the Er atoms into a polymeric cationic chain along [110]. The Cu(II) atom is five-coordinated in a square-pyramidal geometry by two pyrazine-2-carboxyl-ate ligands and a Br atom, forming a discrete anion. The polymeric cations, complex anions and uncoordinated water mol-ecules are self-assembled into a three-dimensional supra-molecular network through O-H?N, O-H?O and O-H?Br hydrogen bonds.

SUBMITTER: Yang HF

PROVIDER: S-EPMC3007546 | biostudies-literature | 2010 Jul

REPOSITORIES: biostudies-literature

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catena-Poly[[[tetra-aqua-erbium(III)]-μ-oxalato-κO,O:O,O] [bromidobis(pyrazine-2-carboxyl-ato-κN,O)cuprate(II)] tetra-hydrate].

Yang Hui-Fu HF Xu Shi-Hai SH

Acta crystallographica. Section E, Structure reports online 20100703 Pt 8

In the title heterometallic complex, {[Er(C(2)O(4))(H(2)O)(4)][CuBr(C(5)H(3)N(2)O(2))(2)]·4H(2)O}(n), the Er(III) atom is eight-coordin-ated by four O atoms from two centrosymmetric oxalate ligands and four water mol-ecules, displaying a bicapped trigonal-prismatic geometry. The oxalate ligands bridge the Er atoms into a polymeric cationic chain along [110]. The Cu(II) atom is five-coordinated in a square-pyramidal geometry by two pyrazine-2-carboxyl-ate ligands and a Br atom, forming a discrete ...[more]

PMID: 21588122

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