Preparation and Properties of Chromium (0) Complex with 1,2-Dithionato

Abstract

The complex of chromium (0) with 1,2-dithionato has been prepared. The composition of this complex was confirmed by elemental analysis and the properties of the metal-sulfur bond of the complex were investigated by infrared and far-infrared spectra. The charge transfer reactions of this complex were examined by electronic spectrum and polarography. From the elemental analysis of this complexes, the composition was found to be [Cr(S2C2(C6H5)2)5]. The method of preparation is described in this paper. Stretching frequencies of C=S bond in this complex were observed at 1165 and 1030 cm–1, and the bands appeared at 420 and 355 cm–1 were assigned to M-S perturb's stretching frequencies from the infrared and far-infrared spectra. Measurement of the magnetic susceptibility revealed that this complex was diamagnetic. To obtain polarogram, the rotating platinum electrode (diameter, 1 mm and rotation number, 600 rpm) was used as a working electrode. The obtained polarogram showed well defined waves (acetonitrile-dichloromethan 1: 1 mixed solvent and (C2H5)4NClO4, the supporting electrolyte). Thus, the electrode reaction was found to be In terms of the electronic spectra and the results of polarography, this complex was found to be the charge transfer one. © 1974, The Chemical Society of Japan. All rights reserved.