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Synthesis of group 6 metal triply bonded dimers [η5-RC5H4(CO)2M2and their reactions with Co2(CO)8. X-ray molecular structure of η5-MeCOC5H4(CO)3MoCo(CO)4

Authors
Journal
Polyhedron
0277-5387
Publisher
Elsevier
Publication Date
Volume
13
Issue
23
Identifiers
DOI: 10.1016/s0277-5387(00)83386-0

Abstract

Abstract By thermolysis of metal-metal singly bonded compounds [η 5-RC 5H 4(CO) 3M] 2 in toluene or diglyme, the corresponding triply bonded dimers [η 5-RC 5H 4(CO) 2M] 2 ( I) (M = Mo, R = MeCO, MeO 2C, EtO 2C; M = W, R = n-Bu) were produced in 45–94% yields. Further reactions of I (M = Mo, R = MeCO, EtO 2C; M = W, R = n-Bu) with Co 2(CO) 8 in toluene at room temperature gave the heterobimetallic complexes η 5-RC 5H 4 (CO) 3MCo(CO) 4 ( II) (M = Mo, R = MeCO, EtO 2C; M = W, R = n-Bu) in 43–46% yields. The structures of these seven new compounds have been characterized by elemental analysis, IR, 1H NMR and mass spectroscopy, as well as the structure of II (M = Mo, R = MeCO), which was established by single-crystal X-ray diffraction techniques.

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