摘要:
The synthesis and spectroscopic characterisation of [Cd{(c-C6H11)(2)P(Se)C(S)NPh}(2)] is reported. The [(c-C6H11)(2)P(Se)C(S)NPh](-) anions are chelating and define a tetrahedral Se2S2 donor set about the cadmium atom. The tetrahedral CdSe2S2 arrangement has been characterised for the first time crystallographically and in the present case the Cd-Se bond distances lie in the range 2.613(1)-2.625(1) Angstrom and Cd-S 2.488(3)-2.523(3) Angstrom. Crystals are triclinic, space group Pi with unit cell dimensions a = 19.848(4), b = 20.485(3), c = 10.969(2) Angstrom, alpha = 105.49(1), beta = 102.37(1), gamma = 101.06(1)degrees, Z = 4. The structure was refined to final R = 0.051 for 7071 reflections. (C) 1998 Elsevier Science S.A.