摘要:
A series of bis(pentamethylcyclopentadienyl)uranium and thorium bis(trimethylsilyl)phosphide compounds, Cp*2An(X)[P(SiMe3)2], has been synthesized, where X = Cl [An = U (1a), Th (1b)] or CH3 [An = U (2a), Th (2b)]. Thermal decomposition of 2a,b results in the formation of the metallacycle complexes CP*2An[P(Si(CH3)3)Si(CH3)2CH2] [An = U (3a), Th (3b)], accompanied by the liberation of methane. The compounds la, 2b, and 3a have been characterized by single crystal X-ray structural analysis. Crystal data: for la, space group P2(1)/a, a = 12.025 (2) angstrom, b = 16.821 (4) angstrom, c = 15.156 (3) angstrom, beta = 95.85 (1)-degrees, V = 3049.7 (7) angstrom3, Z = 4, R = 0.059; for 2b, space group P2(1)/c, a = 15.296 (3) angstrom, b = 16.870 (3) angstrom, c = 12.137 (2) angstrom, beta = 96.07 (3)-degrees, V = 3114.1 (10) angstrom3, Z = 4, R = 0.040; for 3a, space group P2(1)/n, a = 8.632 (2) angstrom, b = 18.809 (9) angstrom, c = 19.063 (10) angstrom, beta = 100.66 (4)-degrees, V = 3042 (2) A3, Z = 4, R = 0.073.