PUB - Publikationen an der Universität Bielefeld

The reaction of equimolar amounts of [(eta(5)C(5)Me(5))(CO)(2)RuSb(SiMe3)(2)] (Ib) and the carboxylic chlorides RC(O)Cl (R = tBu, Ph, 1-adamantyl) afforded the acyl(trimethylsilyl)stibanido complexes [(eta(5)-C5Me5)(CO)(2)RUSb. {C(O)R}(SiMe3)] 2b (R = tBu), 4b (R = Ph), and 6b (R = 1-Ad). The treatment of Ib with two molar equivalents of pivaloyl chloride and benzoyl chloride led to the diacylstibanido complexes [(eta(5)-C5Me5)(CO)(2)Rusb{C(O)R}(2)] (3b, 5b). Analogously, the iron complex [(eta(5)-C5Me5)(CO)(2)FeSb (SiMe3)(2)] (1a) is converted into the corresponding diacylstibanido complexes 3a (R = tBu), 5a (R = Ph) and 7a (R = 1-Ad) by an excess of acid chloride. The treatment of la with equimolar amounts of RC(O)Cl gave inseparable mixtures of starting material and the monoacyl- and diacyl stibanido complexes. Oxalyl chloride reacted quantitatively with two equivalents of la to give complex [{(eta(5)-C5Me5) (CO)(2)Fesb(SiMe3)C(O)}(2)] (8). The molecular structures of 1a, 2b and 5b were elucidated by single crystal X-ray analyses.