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A monoaqua zinc complex. Unique acid dissociation behaviour

Drew, M.G.B., Parui, D., De, S., Chowdhury, S. and Datta, D. (2007) A monoaqua zinc complex. Unique acid dissociation behaviour. New Journal of Chemistry, 31 (10). pp. 1763-1768. ISSN 1144-0546

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To link to this item DOI: 10.1039/b706230n

Abstract/Summary

Using the I : 2 condensate of benzil dihydrazone and 2-acetylpyridine as the ligand L, two complexes of zinc, [ZnL(CH3COO)]PF6 (1) and [ZnL(H2O)CIO4]CIO4 H2O (2), are synthesised from Zn(CH3COO)(2).2H(2)O and Zn(CIO4)(2).6H(2)O, respectively. From X-ray crystallography, both the complexes are found to be single helical with the metal in distorted octahedral N4O2 environment. In 1, the two oxygen atoms come from the bidentate acetate while 2 is a monoaqua complex with a perchlorate anion bound to the metal in monodentate fashion. The perchlorate in 2 is not at all weakly bound [Zn-O(perchlorate) 2.256(4) A]. Still in acetonitrile solution, the coordinated perchlorate ion dissociates upon deprotonation [reaction (i)].

Item Type:Article
Refereed:Yes
Divisions:Faculty of Life Sciences > School of Chemistry, Food and Pharmacy > Department of Chemistry
ID Code:11230
Uncontrolled Keywords:BOND-VALENCE, CARBONIC-ANHYDRASE, BASICITY SCALE, PK(A) VALUES, ACETONITRILE, HYDRATION, ANALOGS, ENZYMES, LIGAND, MEDIA

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