19601-48-0Relevant academic research and scientific papers
Organometallic compounds with metal-metal bonds. XIII. Reactions of iron pentacarbonyl with halides and organometallic halides of germanium(IV) and tin(IV)
Kummer,Graham
, p. 1208 - 1214 (2008/10/08)
Iron pentacarbonyl has been found to undergo an oxidative elimination reaction with tetrahalides of germanium and tin (MX4). Under mild conditions, the initial product is cis-octahedral (OC)4XFeMX3 (I). Heating of I or reaction of Fe(CO)5 with MX4 under more vigorous conditions affords octahedral (OC)4Fe(MX3)2 (II). In reactions with GeX4, only trans-II is formed for X = Br or I, while for X = Cl, a mixture of cis- and trans-II results. Reaction with SnX4 (X = Cl, Br) affords only cis-II, although trans-(OC)4Fe(SnCl3)2 was formed in an unusual reaction with C6H5SnCl3. The trans forms of both (OC)4Fe(GeCl3), and (OC)4Fe(SnCl3)2 isomerized to cis in solution. Reaction of GeX4 with Fe(CO)3 under still more vigorous conditions or of II (M = Ge) with Fe(CO)5 affords the cyclic derivatives [(OC)4FeGeX2]2 (III). Reaction of LFe(CO)4 or L2Fe(CO)3 (L = triphenylphosphine) with SnX4 (X = Cl, I) yields L(OC)3XFeSnX3. Carbonyl stretching frequencies of all compounds are reported and qualitatively discussed.
