Poly[[penta-aqua-(µ(4)-pyridine-2,4,6-tri-carboxyl-ato)(µ(3)-pyridine-2,4,6-tri-carboxyl-ato)disamarium(III)] mono-hydrate].
Acta Crystallogr Sect E Struct Rep Online
; 68(Pt 3): m287, 2012 Mar 01.
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| ID: mdl-22412433
ABSTRACT
The asymmetric unit of the title compound, {[Sm(2)(C(8)H(2)NO(6))(2)(H(2)O)(5)]·H(2)O}(n), contains two independent Sm(III) ions, two pyridine-2,4,6-tricarboxyl-ate (ptc) ligands, five aqua ligands and one lattice water mol-ecule. One Sm(III) ion is nine-coordinated by one N and five O atoms from the three ptc ligands and three aqua ligands in a distorted monocapped square antiprismatic geometry, and the other is eight-coordinated by one N and five O atoms from three ptc ligands and two aqua ligands in a 4,4'-bicapped trigonal anti-prismatic geometry. The ptc ligands brigde the Sm(III) ions into a three-dimensional polymeric framework. Extensive O-Hâ¯O hydrogen bonding is observed in the crystal structure.
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Acta Crystallogr Sect E Struct Rep Online
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2012
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Article