Cleavage of the sulphur–sulphur bond in alkyl and aryl disulphides by dicarbonylbis(η-cyclopentadienyl)titanium(II) and bis(η-cyclopentadienyl)vanadium(II): synthesis and properties of alkylthio- and aryl-thio-derivatives of titanium(IV), titanium(III), vanadium(IV), and vanadium(III)
- 1 January 1974
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 22,p. 2433-2436
- https://doi.org/10.1039/dt9740002433
Abstract
A new synthesis of the complexes [Ti(cp)2(SR)2], (II), via oxidative addition of alkyl and aryl disulphides to [Ti(cp)2(CO)2], (I), is reported (cp =η-cyclopentadienyl). Reactions of (II) with (I) give binuclear titanium(III) complexes, [(cp)2Ti(µ-SR)2Ti(cp)2], (III), and this type of reaction is proposed as a general synthetic route to such complexes. Complexes (III) show reduced paramagnetism, in agreement with titanium(III)–titanium(III) interaction, and unusual affinity for carbon monoxide. The oxidative addition of disulphides to [V(cp)2], (VI) affords, depending on the reactions conditions, [V(cp)2(SR)2], (VIII), or [V(cp)2SR], (VII). The latter complexes can reversibly co-ordinate carbon monoxide.Keywords
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