The photoinduced reaction of η5-ArM(CO)3R complexes (η-Ar = C5H5, C5H4Me, C5Me5, C9H7; M = Cr,Mo,W; R = Me, Et, nPr, nBu) with symmetrical and asymmetrical alkynes, R1CCR2 (R1, R2 = H, Me, Ph), in solution yields metallacyclic alkenylketone complexes of the type η5-Ar(CO)2)R]. Spectroscopic characterization of these 1:1 adducts and the X-ray structure of C5Me5(CO)2)Me] indicate considerable double
η的光诱导反应5型臂(CO)3 - [R络合物(η-的Ar = C 5 H ^ 5,C 5 H ^ 4我,C 5我5,C 9 H ^ 7 ; M =
铬,
钼,W; R = ME等,ñ PR,ñ丁基)用对称和不对称的
炔烃,R 1 CCR 2(R 1,R 2 = H,Me中,PH),在溶液中的产率的类型的metallacyclic alkenylketone络合物η 5 -Ar( CO)2)R]。这些1:1加合物的光谱表征和C 5的X射线结构我5(CO)2)我]表示为C相当大的双键特征的α -
金属键,且容易的氧解离的
金属。