CIRCULAR DICHROISM STUDIES OF COBALT(III) COMPLEXES OF THE TYPE CIS-[CoN2O4]
- 1 August 1974
- journal article
- research article
- Published by Taylor & Francis in Journal of Coordination Chemistry
- Vol. 4 (1) , 19-26
- https://doi.org/10.1080/00958977408075874
Abstract
The complex ion [Co(mal)2(tn)]- (mal =malonate ion) and the corresponding complexes of trimethylenediamine (tn) containing the bidentate O-donor ligands C2O4 2- and acetylacetonate (acac) ions were prepared and resolved. Their circular dichroism (CD) spectra are compared with the data reported here for [Co(C2O4)2(I-chxn)]−, [Co(mal)2 (I-chxn)]−, [Co(mal)2(I-pn)]−, and [Co(acac)2(I-pn)]+ complex ions. The malonate complexes reveal greater splitting within the first absorption band region compared to C2O4 2- and acac, but lower net rotational strengths. The contributions to the CD spectra for the optically active ligands are comparable to those reported for other complexes. There is a much greater contribution from the optically active ligand in trans-cyclohexanediaminetetraacetatocobaltate ion than in the corresponding complex of 1,2-propanediaminetetracetatocobaltate ion.Keywords
This publication has 20 references indexed in Scilit:
- Circular dichroism of a cobalt(III) complex of ethylenediamine-N,N'-diacetic-N,N'-di-3-propionic acidInorganic Chemistry, 1972
- Circular dichroism of cobalt(III) complexes with ethylenediamine-N,N'-diacetic acid and a carbonate, oxalate, or malonate anionInorganic Chemistry, 1969
- Stereospecific ligands and their complexes. I. A cobalt(III) complex of ethylenediaminedisuccinic acidInorganic Chemistry, 1968
- Optical Activity and Electronic Spectra. Pseudo-tetragonal l-Cyclohexanediamine Complexes of Cobalt(III)Inorganic Chemistry, 1966
- Circular Dichroism of Coordination Compounds. I. Splitting Patterns for Potassium Ethylenediaminetetraacetatocobaltate(III) and Model CompoundsInorganic Chemistry, 1963
- Stereospecific Influences in Metal Complexes Containing Optically Active Ligands. Part VI. Oxalato-l-propylenediaminecobalt(III) ComplexesJournal of the American Chemical Society, 1963
- Stereospecific Influences in Metal Complexes Containing Optically Active Ligands.1 Part V. Absolute Stereospecificity in Metal Complexes of Optically Active Polyaminocarboxylic AcidsJournal of the American Chemical Society, 1961
- Oxalato- and Malonato-ethylenediaminecobalt(III) ComplexesJournal of the American Chemical Society, 1961
- Stereospecific Influences in Metal Complexes Containing Optically Active Ligands. Part I. Some of the Optical Isomers of Tris-(propylenediamine)-cobalt(III) IonJournal of the American Chemical Society, 1959
- The Stereochemistry of Complex Inorganic Compounds. XIII.1 A Partial Resolution of Racemic Tartaric Acid by Means of Different Stabilities of Isomers of Complex Ions2Journal of the American Chemical Society, 1952