Mad. Koeslag et Mc. Baird, SYNTHESIS AND PROPERTIES OF TA(CO)(4)(DPPE), THE 1ST STABLE MONONUCLEAR TANTALUM(O) CARBONYL COMPOUND, Organometallics, 13(1), 1994, pp. 11-12
Reaction of the hydride TaH(CO)4(dppe) (dppe = 1,2-bis(diphenylphosphi
no)ethane) in benzene with the tris(p-tert-butylphenyl)methyl radical
results in abstraction of the metal-bonded hydrogen atom and formation
of tris(p-tert-butylphenyl)methane and the 17-electron compound Ta(CO
)4(dppe). The latter is the first tantalum(0) carbonyl compound to be
synthesized and studied.