196102-55-3Relevant academic research and scientific papers
Lewis-base adducts of group 11 metal(I) compounds. LXVI: Synthesis, spectroscopy and structural systematics of some 1 : 3 adducts of copper(I) compounds with triphenylstibine, [(Ph3Sb)3CuX], X = Br, I, ONO2
Bowmaker, Graham A.,Hart, Robert D.,White, Allan H.
, p. 567 - 576 (2007/10/03)
The syntheses of adducts, [(Ph3Sb)3CuX), X = Br, I, NO3, obtained by crystallization of 1 : 3 CuX/SbPh3 mixtures from appropriate solvents are described, together with their room-temperature single-crystal X-ray structure determinations. The bromide, obtained as a chloroform monosolvate from that solvent, is triclinic, P1?, a 13.861(4), b 14.306(4), c 14.347(4) ?, α 84.40(2), β 86.93(2), γ 75.56(2)°, Z = 2 f.u., conventional R on |F| being 0.053 for No = 4136 independent 'observed' (I > 3σ(I)) reflections; this solvate is isomorphous with its previously recorded chloride counterpart. The iodide is triclinic, P1?, a 14.55(1), b 14.385(2), c 23.626(6) ?, α 91.78(1), β 90.77(4), γ 92.54(5)°; Z = 4, R 0.050 for No 6917, and isomorphous with its phosphorus counterpart. The nitrate, although a methanol sesquisolvate, is also isomorphous with the chloride and bromide, a 13.369(9), b 14.398(3), c 14.504(12) ?, α 82.29(5), β 84.39(6), γ 75.11(4)°, R 0.052 for No 5672. Cu-X are (2.235(5) (Cl)), 2.366(3) (Br), 2.556(2) (×2) (I), 1.98(1) ? (ONO2), appreciably shorter than in their previously recorded EPh3, E = P, As counterparts. The far-infrared spectra of [(Ph3Sb)3CuX] showed no clear v(CuX) bands, in contrast to the situation reported previously for the corresponding Ph3P and Ph3As compounds. It is likely that v(CuCl) is masked by a strong band at 270 cm-1 due to the Ph3Sb ligand. However, the region below 250 cm-1 in which the v(CuX) bands are expected for the X = Br, I complexes contains no strong ligand bands. Possible reasons for the absence of v(CuX) bands in these complexes are considered.
