1. catena-Poly[[diaqua(isonicotinato-κ2 O, O′)erbium(III)]-di-μ-isonicotinato-κ4 O: O′].
- Author
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Zeng-Xin Li, Shu-Yun Xue, Chun-Sheng Duan, Guo-Ming Wang, and Qiang Liang
- Subjects
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ORGANIC compounds , *ANIONS , *ASYMMETRY (Chemistry) , *MOLECULES , *ERBIUM , *CRYSTALLOGRAPHY , *CHELATES , *HYDROGEN bonding - Abstract
In the title compound, [Er(IN)3(H2O)2] n, where IN is the isonicotinate anion, C6H4NO2−, the asymmetric unit contains one half-molecule. The ErIII atom lies on a crystallographic twofold axis and is coordinated by four and two carboxylate O atoms from bridging and chelating isonicotinate groups, respectively, and by two O atoms from water molecules, yielding an eight-coordinate square-antiprismatic geometry. In the crystal structure, the polymer features an infinite doubly carboxylate-bridged chain-like structure with one chelating carboxylate group on each metal centre. Adjacent chains are, in turn, connected to each other through intermolecular O—H⋯O and O—H⋯N hydrogen bonds, forming a three-dimensional network. [ABSTRACT FROM AUTHOR]
- Published
- 2006
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