X-Ray and potentiometric studies on a pentanuclear copper(II) complex with β-alaninehydroxamic acid

Barbara Kurzak, Etelka Farkas, Tadeusz Glowiak, Henryk Kozlowski

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Abstract

Potentiometric and X-ray studies on the system copper(II)-L-β-alaninehydroxamic acid have shown the formation of a very stable pentanuclear complex [Cu5A4H-4]2+ at pH around 4. In this species all donor atoms of the aminohydroxamic acid are involved in the metal ion co-ordination. Four peripheral metal ions form an almost planar structure and the central metal ion is 0.4 Å above this plane. There are twelve five- and six-membered chelate rings with different conformations. The X-ray structure results support earlier suggestions based on potentiometric and spectroscopic data for the formation of oligomeric structures at relatively low pH.

Original languageEnglish
Pages (from-to)163-167
Number of pages5
JournalJournal of the Chemical Society, Dalton Transactions
Issue number2
DOIs
Publication statusPublished - Dec 1 1991

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ASJC Scopus subject areas

  • Chemistry(all)

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