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Catena-Poly[[diaqua-cobalt(II)]-?(2)-7-oxa-bicyclo-[2.2.1]heptane-2,3-dicarboxyl-ato-?O,O,O:O].

ABSTRACT: The polymeric title complex, [Co(C(8)H(8)O(5))(H(2)O)(2)](n) was synthesized by reaction of cobalt acetate with 7-oxabicyclo-[2,2,1]heptane-2,3-dicarb-oxy-lic anhydride. The Co(II) ion is six-coordinated in a distorted octa-hedral environment, binding to two water O atoms, to the ether O atom of the bicyclo-heptane unit, to two carboxyl-ate O atoms from two different carboxyl-ate groups of the same anion and to one carboxyl-ate O atom from a symmetry-related anion. The bridging character of the dianion leads to the formation of ribbons along [001]. The ribbons are linked into a layered network parallel to (010) by several O-H?O hydrogen-bonding inter-actions involving the coordinating water mol-ecules as donors and the carboxyl-ate O atoms of neighbouring ribbons as acceptors. The crystal under investigation was an inversion twin.

SUBMITTER: Zhang F

PROVIDER: S-EPMC3274880 | biostudies-other | 2012 Feb

REPOSITORIES: biostudies-other

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catena-Poly[[diaqua-cobalt(II)]-μ(2)-7-oxa-bicyclo-[2.2.1]heptane-2,3-dicarboxyl-ato-κO,O,O:O].

Zhang Fan F Lin Qiu-Yue QY Wang Yong-Chang YC He Ji-Du JD

Acta crystallographica. Section E, Structure reports online 20120114 Pt 2

The polymeric title complex, [Co(C(8)H(8)O(5))(H(2)O)(2)](n) was synthesized by reaction of cobalt acetate with 7-oxabicyclo-[2,2,1]heptane-2,3-dicarb-oxy-lic anhydride. The Co(II) ion is six-coordinated in a distorted octa-hedral environment, binding to two water O atoms, to the ether O atom of the bicyclo-heptane unit, to two carboxyl-ate O atoms from two different carboxyl-ate groups of the same anion and to one carboxyl-ate O atom from a symmetry-related anion. The bridging character of the ...[more]

PMID: 22346827

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Project description:In the crystal structure of the title compound, [Cu(C(8)H(8)O(5))(H(2)O)(2)](n), the Cu(II) cation is in a Jahn-Teller distorted six-coordination by two O atoms from water molecules, by the bridging O atom from the bicyclo moiety, by two carboxylate O atoms from two different carboxylate groups and by one carboxylate O atom from a symmetry-related bridging ligand.The polymeric structure is made up from double-strands propagating parallel to the c axis that are held together via inter-molecular O-H?O hydrogen bonds.

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catena-Poly[diaqua-tris(?(3)-biphenyl-2,2-dicarboxyl-ato)disamarium(III)].

Project description:The title compound, [Sm(2)(C(14)H(8)O(4))(3)(H(2)O)(2)](n), is composed of one-dimensional chains and is isostructural with previously reported compounds [Wang et al. (2003 ?). Eur. J. Inorg. Chem. pp. 1355-1360]. The asymmetric unit contains two Sm atoms, each of which lies on a crystallographic twofold axis. Both crystallographically independent Sm atoms are coordinated by eight O atoms in a distorted dodeca-hedral arrangement. The polymeric chains run along [001]. Adjacent chains are connected through ?-? inter-actions [centroid-centroid distance = 3.450?(2)?Å], forming a two-dimensional supra-molecular network.

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catena-Poly[diimidazolium [bis-(?-pyridine-2,5-dicarboxyl-ato)bis-[diaqua-praseodymate(III)]]-bis-(?-pyridine-2,5-dicarboxyl-ato)].

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