75170-71-7Relevant academic research and scientific papers
THE REACTIONS OF (L = R3P OR RNC) WITH CARBON DISULPHIDE AND ORGANOISOTHIOCYANATES
Fortune, John,Manning, A. R.
, p. C95 - C96 (1980)
The reactions of or /R3P mixtures (R = alkyl or aryl) with CS2 in refluxing CS2 or CS2/toluene gives rise to , , , and in reasonable yields.The corresponding reactions using PhNCS give and a polymeric species which appears to be .Similar products are obtained with or /RNC mixtures.
Reactions of carbon disulfide with (η-cyclopentadienyl)cobalt(I) complexes
Fortune, John,Manning
, p. 1719 - 1723 (2008/10/08)
The reactions of CS2 with [Co(η-C5H5)(CO)(L)] or [Co(η-C5H5)(CO)2] and L at elevated temperatures give a mixture of orange [Co(η-C5H5)(L)(CS)] (I), red [Co(η-C5H5)(L)(η2-CS2)] (II), green [Co3(η-C5H5)3-(μ 3-CS)(μ3-S)] (III), and dark red [Co(η-C5H5)(L)(CS3)] (IV) when L is a tertiary phosphine or organo-isocyanide but not when it is a tertiary phosphite or arsine. The product ratio depends to some extent on L but mainly on the reaction temperature. II appears to be the source of I and IV and decomposes slowly to approximately equal amounts of them at 40°C. II is also the source of III and may be converted to it by photolysis at room temperature or thermolysis at temperatures >80°C or by reaction with [Co(η-C5H5)(CO)2]. The IR and 1H NMR spectra of I, II, and III are reported and discussed. II undergoes ligand replacement reactions. Thus [Co(η-C5H5) (PPh3) (η2-CS2)] reacts slowly with n-Bu3P to give [Co(η-C5H5){P(n-Bu)3}(η 2-CS2)] and with PhNCS to give [Co(η-C5H5)(PPh3){η 2-(CS)-PhNCS}]. I, II, and III are organometallic bases. With I electrophilic attack may occur at the CS ligand to give, e.g., [Co(η-C5H5)(PPh3)(CSMe)][SO3F] or at the metal atom to give, e.g., [Co(η-C5H5)(PPh3) (CS)(HgCl2)]. Metal attack does not take place with II or III as these form [Co(η-C5H5)(L){η2-C(S)S→E}] and [Co3(η-C5H5)3-(μ 3-CS→E)(μ3-S)] adducts, respectively, with many electrophiles (E) such as Me+, HgCl2, Ag+, etc. The reactions of II and III with halogens differ as the former lose their CS2 ligands to give [Co(η-C5H5)(L)X2] (X = Cl, Br, or I) but the latter gives the adduct [Co3(η-C5H5)3(μ 3-CSI)(μ3-S)]I.
