Crystal structure of bis(acetato-κ2 O,O′)diaqua[1-(pyridin-2-ylmethylidene-κN)-2-(pyridin-2-yl-κN)hydrazine-κN 1]terbium(III) nitrate monohydrate
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چکیده
In the title compound, [Tb(C2H3O2)2(C11H10N4)(H2O)2]NO3·H2O, the Tb3+ ion is nine-coordinated in a distorted tricapped trigonal-prismatic geometry by the three N atoms of the tridentate 1-(pyridin-2-yl-methyl-idene)-2-(pyridin-2-yl)hydrazine ligand, four carboxyl-ate O atoms of two chelating acetate groups and two O atoms of the coordinating water mol-ecules. The organic hydrazine ligand is disordered over two orientations with a refined occupancy ratio of 0.52 (3):0.48 (3). All bond lengths in the coordination environment of the Tb3+ ion are slightly larger than those observed in the isostructural Y3+ and Er3+ complexes. In the crystal, the complex cations are linked by pairs of O-H⋯O hydrogen bonds into dimers. These dimers, nitrate anions and non-coordinating water mol-ecules are joined by O-H⋯O and N-H⋯O hydrogen bonds into a three-dimensional structure.
منابع مشابه
(Ethylenediamine-κ2 N,N)bis[2-(pyridin-2-yl-κN)-1,3-imidazol-1-ido-κN 1]cobalt(III) nitrate monohydrate
In the title compound, [Co(C(8)H(6)N(3))(2)(C(2)H(8)N(2))]NO(3)·H(2)O, the Co(III) ion is coordinated by four N atoms from two 2-(pyridin-2-yl)-1,3-imidazol-1-ide ligands and two N atoms of ethyl-enediamine in a distorted octa-hedral geometry. In the crystal, classical N-H⋯N(O) and O-H⋯N(O) hydrogen bonds connect all the isolated components together to yield a three-dimensional structure.
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