Research Article: Poly[dimethyl­ammonium [aquadi-μ2-oxalato-samarate(III)] trihydrate]

Date Published: July 01, 2011

Publisher: International Union of Crystallography

Author(s): Yao-Kang Lv, Li-Hua Gan, Ming-Xian Liu, Wei Xiong.


In the title complex, {(C2H8N)[Sm(C2O4)2(H2O)]·3H2O}n, the SmIII atom is chelated by four oxalate ligands and one water mol­ecule forming a distorted tricapped trigonal–prismatic geometry. Each oxalate ligand chelates to two SmIII atoms, generating a three-dimensional anionic network with cavities in which the ammonium cations and lattice water mol­ecules reside. Various O—H⋯O, N—H⋯O and C—H⋯O hydrogen-bonding inter­actions further stablize the crystal structure.

Partial Text

For general background to the rational design and synthesis of metal-organic polymers, see: Kim et al. (1998 ▶); Lv et al. (2011 ▶). For related structures, see: Lv et al. (2010 ▶); Trombe & Mohanu (2004 ▶). The structure of the isotypic EuIII compound was reported by Yang et al. (2005 ▶), and the DyIII compound was reported by Ye & Lin (2010 ▶).




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