Abstract
Abstract As part of a program for the study of the crystal structure of copper(II)-complex with succinimide, the crystal structures of potassium tetrakis(succinimidato) copper(II) hexahydrate and lithium tetrakis(succinimidato) copper(II) monohydrate have been determined by means of X-ray analysis. In the potassium-salt, the copper atom has a square planar coordination and the potassium ion has a trigonal prismatic environment formed by six oxygen atoms. In the lithium-salt, the copper atom has a flattened tetrahedral coordination, and each lithiun ion is tetrahedrally surrounded by four oxygen atoms. The conformational difference between the complex anion of the potassium-salt and that of the lithium-salt seems to result from the different sizes of the alkali-metal ions.
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