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Poly[[diaqua-?(3)-citrato-praseodymium(III)] monohydrate].


ABSTRACT: In the coordination polymer, {[Pr(C(6)H(5)O(7))(H(2)O)(2)]·H(2)O}(n), seven of the nine coordination sites of the monocapped square-anti-prismatic geometry are occupied by three O atoms of the same citrate trianion (an O atom of the hy-droxy unit and the formally single-bond O atoms from two carboxyl units). Two other coordination sites are occupied by the O atoms of a chelating carboxyl unit of another citrate; one of these atoms is additionally involved in bridging. The seventh coordination site is occupied by the O atom of the formally double-bond O atom of a neighboring citrate. The remaining two coordination sites are occupied by water mol-ecules. The citrate functions in a ?(3)-bridging mode, connecting the metal atoms into a ribbon structure parallel to [010]. The structure is consolidated into a three-dimensional network by O-H?O hydrogen bonds.

SUBMITTER: Han LJ 

PROVIDER: S-EPMC3152053 | biostudies-literature | 2011 Jul

REPOSITORIES: biostudies-literature

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Poly[[diaqua-μ(3)-citrato-praseodymium(III)] monohydrate].

Han Li-Jun LJ   Deng Yuan-Fu YF   Ng Seik Weng SW  

Acta crystallographica. Section E, Structure reports online 20110625 Pt 7


In the coordination polymer, {[Pr(C(6)H(5)O(7))(H(2)O)(2)]·H(2)O}(n), seven of the nine coordination sites of the monocapped square-anti-prismatic geometry are occupied by three O atoms of the same citrate trianion (an O atom of the hy-droxy unit and the formally single-bond O atoms from two carboxyl units). Two other coordination sites are occupied by the O atoms of a chelating carboxyl unit of another citrate; one of these atoms is additionally involved in bridging. The seventh coordination si  ...[more]

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