期刊
JOURNAL OF ORGANOMETALLIC CHEMISTRY
卷 692, 期 14, 页码 2887-2896出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jorganchem.2007.02.021
关键词
tungsten; molybdenum; tripodal ligands; oxidative addition; oxidative decarbonylation
Starting from [M(CO)(6)], seven-coordinated complexes of tungsten and molybdenum containing the facially coordinating ligands HC(pz)3 (1) and MeC(CH2PPh2)(3) (2) were obtained in a two-step reaction sequence. The complexes have a 4:3 piano stool geometry with almost perfect C-S symmetry in the crystal. In solution, they show the typical fluxional behavior for seven-coordinated complexes even at low temperature. Complete oxidative decarbonylation occurs when [HC(pz)(3)Mo(CO)(3)] (4) or [MeC(CH2PPh2)(3)Mo(CO)(3)] (6) are treated with an excess Of I-2 or Br-2. (C) 2007 Elsevier B.V. All rights reserved.
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