Syntheses and Reactions of Dimolybdenum Propargyl Alcohol Compounds Containing Functionally Substituted Ligands

Abstract

Several dimolybdenum propargyl alcohol compounds containing functionally substituted cyclopentadienyl ligands, [Mo2(μ-CHCCH2OH)(CO)4., (η5-C5H4C(O)R)2] [R = OEt, (1); R = Me, (2); R = Ph, (3)J, were synthesized by reactions of propargyl alcohol with [Mo(CO)2(η5-C5H4C(O)R)2] (R = OEt, Me, Ph). The further reactions of these compounds with Co2(CO)8 in refluxing toluene were investigated. From the reaction of compound (1) with Co2(CO)8, a new butterfly compound, [Co2Mo2(μ4-CHCCH2OH)(μ-CO)4(CO)4(η5-C5H4C-(O)OEt)2] (4), was isolated. The structure of compound (2) was determined by a single-crystal X-ray diffraction analysis. The crystal data for compound (2) are: monoclinic, space group P1,21a (#14), a = 10.489(2) Å, b = 11.904(2) Å, c = 16.488(3) Å, β = 91.39(1)°, V = 2058.2(6) Å3, Z = 4, D c = 1.853 g cm−3, R = 0.032 and R w = 0.042.