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Thiocarbamate complexes. IV. Synthetic study involving iron, molybdenum, palladium and platinum

✍ Scribed by K.R.M. Springsteen; D.L. Greene; B. McCormick

Publisher
Elsevier Science
Year
1977
Tongue
English
Weight
651 KB
Volume
23
Category
Article
ISSN
0020-1693

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✦ Synopsis

A comparative synthetic study of the ligation& properties of thiocarbamate (SOCNR,) and dithiocarbamate (&CNRz) monoanions has been carried out. The substitution of oxygen for sulfur along with the resulting decrease in chelate bite brings about a dramatic change in donor properties, as evidenced most clearly in the synthetic chemistry. In general, the synthetic chemistry of the thiocarbamate ligand is much more difficult and less predictable than is that for the dithiocarbamates. Specific new thiocarbamate compounds reported and characterized include: Fe(OSCNR2)3, $-C5HsFe(CO),(OSCNC~8), MoZ-(OSCNGH,), , cis-Pd(Ph$)2(OSCNC&8)2*2C6H6, and cis-Pt(Ph3p)2(OSCNCf18)2~2CeH6. Also discussed are other iron and molybdenum systems for which dithiocarbamates are known to exist, but which do not provide analogous thiocarbamates. Finally, a new bonding mode for the thiocarbamate ligand is proposed.

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## Abstract New aminomethyl and aminoacetyl complexes with __N__‐phthaloyl as the amino protecting group were synthesised by oxidative addition of __N__‐phthaloylmethyl or ‐acetyl halide to carbonylmetallates or to Pd(PPh~3~)~4~ or [Pt(C~2~H~4~)(PPh~3~)~2~] to give [Re{C(O)CH~2~N‐phthaloyl}(CO)~5~]