The Crystal Structure of l-Asparaginato-d-aspartatocobalt(III) Monohydrate
Author:
- 1 July 1978
- journal article
- Published by Oxford University Press (OUP) in Bulletin of the Chemical Society of Japan
- Vol. 51 (7) , 1991-1995
Abstract
The crystal structure of l-asparaginato-d-aspartatocobalt(III) monohydrate, [Co(H2NCOCH2CHNH2COO)(OCOCH2CHNH2COO)]·H2O, has been determined by an X-ray diffraction method and refined by a block-diagonal least-squares method to give R=0.033 for 1517 non-zero reflections. The crystals are orthorhombic with the space group P212121, a=11.790(2), b=17.059(2), c=5.830(2) Å, and Z=4. The complex molecule has a slightly distorted octahedral coordination with fac(N) geometry. The amide group of l-asparaginate ion is coordinated through the nitrogen atom, and an enolic system of Co←NH=C(OH)–CH2– is formed. The complex molecules are held together through hydrogen bonds which form two-dimensional networks parallel to the (010) plane. The networks are piled up through hydrogen bonds by water molecules to complete three-dimensional networks.Keywords
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