Abstract
Crystals of different compositions, namely, [Ni(Ida)(Im)3] ⋅ H2O (I), [Ni(Im)6][Ni(Mida)2] ⋅ 6H2O (II), and [Ni(Im)2(H2O)4][Ni(Bida)2] (III), have been precipitated from aqueous solutions of the Ni2+-Lig 2−-Im systems, where Lig 2− is Ida, Mida, and Bida, respectively. The crystal structures of I–III are determined by X-ray diffraction analysis (R = 0.0307, 0.0348, and 0.0302 for 3061, 4706, and 2882 reflections, respectively). Crystals I are built of monomeric mixed-ligand complexes and molecules of crystallization water, which are interlinked by hydrogen bonds into a three-dimensional framework. In II and III, the ligands Lig 2− and Im form charged complexes separately. In II, the cationic and anionic layers of the complexes alternate along the c-axis. Numerous hydrogen bonds involving molecules of crystallization water link the layers into a three-dimensional framework. In III, the cationic and anionic complexes, which serve as proton donors and acceptors, respectively, are bound into layers parallel to the xy plane.
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Translated from Kristallografiya, Vol. 45, No. 5, 2000, pp. 833–841.
Original Russian Text Copyright © 2000 by Polyakova, Poznyak, Sergienko.
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Polyakova, I.N., Poznyak, A.L. & Sergienko, V.S. Complexes in the Ni2+-imidazole-RN(CH2COO−)2 systems. The crystal structures of tris(imidazole)iminodiacetatonickel(II) monohydrate, hexa(imidazole)nickel(II) bis(N-methyliminodiacetato)nickelate(II) hexahydrate, and tetra(aqua)bis(imidazole)nickel(II) bis(N-benzyliminodiacetato)nickelate(II). Crystallogr. Rep. 45, 762–770 (2000). https://doi.org/10.1134/1.1312916
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DOI: https://doi.org/10.1134/1.1312916