Mo and W dihalide complexes with uncommon trigonal-prismatic geometry imposed by the linear tetraphosphine ancillary ligand and their reactivities toward diazoalkanes |
| |
Authors: | Seino Hidetake Watanabe Daisuke Ohnishi Takeshi Arita Chirima Mizobe Yasushi |
| |
Institution: | Institute of Industrial Science, The University of Tokyo, Komaba, Meguro-ku, Tokyo 153-8505, Japan. |
| |
Abstract: | New Mo and W tetraphosphine-dihalide complexes MX2(kappa4-P4)] (2, MX=MoCl, MoBr, WBr; P4=meso-o-C6H4(PPhCH2CH2PPh2)2) with uncommon trigonal-prismatic geometries have been prepared. Treatment of ethyl diazoacetate with 2 (MX=MoCl) resulted in catalytic carbenoid-group coupling to give diethyl maleate and fumarate, whereas reactions of 2 with trimethylsilyldiazoalkane formed the diazoalkane complexes trans-MX(NN=CHSiMe3)-(kappa4-P4)]+ (3+) and cis,mer-MoCl2(NN=CHSiMe3)(kappa3-P4)]. The molecular structures of 2 (MX=MoCl) and 3PF6] (MX=WBr) were crystallographically determined. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|