BIS(ETA-CYCLOPENTADIENYL)-MOLYBDENUM AND -TUNGSTEN IMIDO COMPLEXES - X-RAY STRUCTURES OF [MO(ETA-C5H5)2(NBU(T))] AND [MO(ETA-C5H4ME)2(NBU(T))ME]I

Autor: J. Thomas James, Philip Mountford, Graham H. Maunder, Peter C. Konidaris, Malcolm L. H. Green, Jennifer C. Green
Rok vydání: 2016
Předmět:
DOI: 10.1039/c39920001361
Popis: The pseudo-trigonal bis(η-cyclopentadienyl)-molybdenum and -tungsten imido complexes [M(η-C5H4R)(η-C5H4R′)(NBut)](M = Mo or W; R = R′= Me or H, R′= Pri R = H) are reported together with the ring-slipped indenyl analogue [Mo(η-C5H4Pri)(η3-C9H7)(NBut)] and the metal-methylated salts [Mo(η-C5H4Me)2(NBut)Me]X (X = I or BF4); the X-ray structures of [Mo(η-C5H5)2(NBut)] and [Mo(η-C5H4Me)2(NBut)Me]BF4 suggest that the NBut ligand acts as a strong π-donor to the metal centre; photoelectron studies identify an unusually low ionization-energy band largely localized on the ligands.
Databáze: OpenAIRE