Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
The Absolute Configuration of the (−)589-Oxalatobis(ethylenediamine)-cobalt(III) Ion as Determined by X-Ray Structure Analysis
Tadashi AokiKeiji MatsumotoShun’ichiro OoiHisao Kuroya
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1973 Volume 46 Issue 1 Pages 159-162

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Abstract

The absolute configuration of (−)589-[Co ox en2]+ has been determined by the X-ray diffraction method. The crystals of (−)589-[Co ox en2]Br·H2O are orthorhombic, with the space group P212121, and the unit cell dimensions are: a=16.67(1)Å, b=12.40(1)Å, c=6.183(7)Å, and Z=4. The crystal structure was solved by the conventional Patterson and Fourier methods, and refined by the least-squares procedure to an R factor of 9.97%. The cobalt atom has an octahedral coordination, being chelated by an oxalate anion and two ethylenediamine molecules which are of the ob-lel conformation. The absolute configuration of the complex cation can be denoted as Δ(δλ).

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