ISSN:
1572-8854
Source:
Springer Online Journal Archives 1860-2000
Topics:
Geosciences
,
Physics
Notes:
Abstract Crystal and molecular structures by X-ray diffraction analysis of Co, Cu and Zn complexes of 2,2-diacetoamidopropionic acid are reported. The results show that an uncommon bond from metal ion to a carbonyl-O-of-peptide atom is formed. The structures are isomorphic (Monoclinic,P21/c, with two formula units in the cell). The metal ion lies on a center of symmetry and it is six-oxygen coordinated in an octahedral-type configuration by pairs of water molecules, carboxylic (monodentate) groups and two carbonyl-O-of-peptide atoms. Ligand molecules bridge metal ions, so that the structure consists of a two-dimensional (sheet-type) polymer. Sheets are held together by a hydrogen-bond network making efficient use of the solvent water molecules.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01199530
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