Crystal structures of dichlorotetrakis(acetaldoxime)nickel(II) and tetrakis(acetamide)bisaquonickel(II) dichloride
- 1 January 1971
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc. A
- p. 3632-3636
- https://doi.org/10.1039/j19710003632
Abstract
The crystal structures of NiCl2(acetaldoxime)4(I) and NiCl2(acetamide)4,2(H2O)(II) have been determined by three-dimensional X-ray methods. Both complexes crystallize in the space group P21/c with lattice constants: (I)a= 7·496(3), b= 12·312(5), c= 9·063(6)Å, β= 97·73(4)°; and (II)a= 6·72(2), b= 14·004(3), c= 9·482(3)Å, β= 102·47(1)°. Diffractometer data were refined by full-matrix anisotropic methods to R 0·035 (I; 1904 reflections) and 0·033 (II; 2018 reflections). In (I) each Ni atom is co-ordinated to four acetaldoxime ligands and two trans Cl atoms, intermolecular interactions being weak. In (II) each Ni is bonded to four organic ligands and two trans water molecules; the Cl atoms lie outside the co-ordination spheres but are involved in strong hydrogen bonding, linking adjacent molecules.Keywords
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