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Original Articles

Synthesis and Complexation of a Novel vic‐Dithioglyoxime

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Pages 1825-1833 | Received 17 Sep 2003, Accepted 21 Jun 2004, Published online: 16 Nov 2010
 

Abstract

A new vic‐dioxime ligand, namely 2‐(4,5‐bishydroxyimino‐1,3‐dithiolan‐2‐ylidene)malonic acid diethyl ester (LH2), has been synthesized in two steps starting with the condensation of carbon disulphide and malonic acid diethyl ester and subsequent reaction of the dithiolate intermediate with anti‐dichloroglyoxime (DCGO) in ethanol at 5 °C. LH2 forms mononuclear N,N′‐coordinated planar metal complexes with Ni(II) and Co(II) and N,O‐coordinated (μ‐hydroxo‐bridged dimeric complex with UO2(VI). The octahedral complex (LH)2CoPyCl has been prepared by oxidation of the (LH)2Co complex in the presence of pyridine, and it has been reduced to the Co(I) derivative by NaBH4.

Acknowledgment

This work was supported by the Research Fund of the Technical University of Istanbul.

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