76880-13-2Relevant academic research and scientific papers
The μ-oxo-decachloroditantalum(V) ion
Cotton, F. Albert,Najjar, Robert C.
, p. 1866 - 1869 (2008/10/08)
The compound [P(CH3)3C6H5]2[Ta 2Cl10O] was prepared serendipitously and the structure determined by X-ray crystallography. The compound crystallizes in space group P21/c with Z = 2. The unit cell dimensions are a = 8.479 (3) ?, b = 19.577 (5) ?, c = 10.285 (4) ?, and β = 103.87 (8)°. The [Ta2Cl10O]2- ion has a crystallographic inversion center but approximates very closely to D4h (4/mmm) symmetry. The important bond lengths and angles are as follows: Ta-O, 1.880 (1) ?; Ta-Cl(trans), 2.381 (6) ?; average Ta-Cl(cis), 2.336 ± 0.004 ?; average O-Ta-Cl(cis), 90.9 ± 0.5°. This is the first species of its kind lacking metal d electrons, and comparisons are made with structurally similar species of W, Re, Ru, and Os with 4-8 metal d electrons.
