Carbonyl Complexes of Niobium and Tantalum and Evidence of a Niobium Dinitrogen Complex: the Structure of Carbonyldichlorocyclopentadienyl-bis(dimethylphenylphosphine)tantalum

DOI: 10.1039/DT9810000793

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 793 - 799 (1981)

Update date:2022-08-03

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Authors:

Burt, Roger J.

Leigh, Jeffery G

Hughes, David L.

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Article abstract of DOI:10.1039/DT9810000793

The reactions of (M= Nb or Ta) with tertiary phosphines and other ligands and reduction of the products under carbon monoxide give carbonyls such as < M(η-C5H5)(CO)Cl2(PR3)2> (PR3= tertiary phosphine), but no N2 analogues.The crystal and molecular structure of < Ta(η-C5H5)(CO)Cl2(PMe2Ph)2> has been determined by the heavy-atom method, using Mo-K_α radiation and 1591 non-zero reflections.The space group is hexagonal P6₅, with a=13.661(2), c=26.420(11) Angstroem and Z=6.At convergence, R=0.0357 and R'=0.037 0.Other carbonyls, such as are easily obtainable by reduction under CO, and the preparation of an impure dinitrogen complex which yields some hydrazine with acid is also described.

Full text of DOI:10.1039/DT9810000793

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