catena-Poly[[tetra-μ3-isonicotinato-μ3-oxalato-μ2-oxalato-disamarium(III)disilver(I)] dihydrate]
نویسندگان
چکیده
In the title compound, {[AgSm(C(6)H(4)NO(2))(2)(C(2)O(4))]·H(2)O}(n), the asymmetric unit contains one Sm(III) ion, one Ag(I) ion, two unique isonicotinate (ina) ligands, two half oxalate (ox) ligands (one on an inversion centre, the other on a twofold axis) and one uncoordinated water mol-ecule. The central Sm(III) ion is nine-coordinated by four O-donor atoms from separate bidentate bridging ox ligands and five O-donor atoms from the two ina ligands (both bidentate) and a symmetry-related ina ligand [Sm-O = 2.389 (4)-2.791 (4) Å], giving a distorted monocapped square anti-prismatic geometry. The Ag(I) ion is three-coordinated in a T-shaped geometry involving two ina N-donor atoms [Ag-N = 2.181 (6) and 2.185 (5) Å] and a bridging oxalate O-donor atom [Ag-O = 2.620 (4) Å]. The three-dimensional heterometallic Sm-Ag coordination polymer, having a unique (3,4,6)-connected five-nodal net topology, is constructed from two-dimensional samarium-oxalate layers and pillared Ag(ina)(2) subunits. Inter-molecular water-carboxyl-ate O-H⋯O hydrogen-bonding inter-actions are also present.
منابع مشابه
Poly[[tetraaquadi-μ3-oxalato-μ2-oxalato-diprasedymium(III)] dihydrate]
In the title compound, {[Pr(2)(C(2)O(4))(3)(H(2)O)(4)]·2H(2)O}(n), the three-dimensional network structure has the Pr(III) ion coordinated by nine O atoms in a distorted tricapped trigonal-prismatic geometry. The coordinated and uncoordinated water mol-ecules inter-act with the carboxyl-ate O atoms to consolidate the network via O-H⋯O hydrogen bonds.
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The title of the paper by Zhu, Zhao & Yu [Acta Cryst. (2009), E65, m1105] is corrected.[This corrects the article DOI: 10.1107/S1600536809032115.].
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