Tetrakis(μ-2,4-difluorobenzoato)bis[(2,2′-bipyridine)(2,4-difluorobenzoato)terbium(III)]
نویسندگان
چکیده
In the centrosymmetric dinuclear title compound, [Tb(2)(C(7)H(3)F(2)O(2))(6)(C(10)H(8)N(2))(2)], the Tb(III) ion is coordinated by an N,N'-bidentate 2,2'-bipyridine mol-ecule, and two O,O'-bidentate 2,4-difluoro-benzoate (dfb) anions. One of the latter also bonds to the second Tb(III) centre through one of its O atoms. The third dfb anion bonds to one Tb atom from each of its O atoms. Thus, the three dfb species have three different coordination modes. This results in an irregular TbN(2)O(7) coordination sphere for the metal ion. The F atoms and their associated H atoms in the simple bidentate dfb anion are disordered over two sets of sites in a 0.672 (10):0.328 (10) ratio.
منابع مشابه
Tetrakis(μ-2,4-difluorobenzoato)bis[(2,4-difluorobenzoato)(1,10-phenanthroline)gadolinium(III)]
In the title compound, [Gd(2)(C(7)H(3)F(2)O(2))(6)(C(12)H(8)N(2))(2)], the asymmetric unit comprises one Gd(3+) cation chelated by two 2,4-difluoro-benzoate and one 1,10-phenanthroline ligands. Two cations are linked into a centrosymmetric dimer via three bridging carboxyl-ate groups of 2,4-difluoro-benzoate ligands. Each Gd(3+) ion is nine-coordinated by seven O atoms and two N atoms.
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In the centrosymmetric title compound, [Gd(2)(C(7)H(3)F(2)O(2))(6)(C(10)H(8)N(2))(2)], the asymmetric unit comprises one cation chelated by two 2,5-difluoro-benzoate and one 2,2'-bipyridine. Two cations are linked into dimers via three bridging carboxyl-ate groups from three 2,5-difluoro-benzoic acid units. The Gd(III) ion is nine-coord-inated by seven O atoms and two N atoms.
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