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本工作合成了五个钍(Ⅳ)与β—二酮、三苯基氧化膦的三元配合物。其化学式分别为Th(TPPO)_2(L)(NO3)_3(L=dbm,bzac,bfac,TTA)和Th(TPPO)_2(tfac)_2(NO_3)_2,以及一个中间配合物Th(TPPO)_2(NO)_4,通过电导、热谱、紫外以及红外光谱的测试,对它们的性质进行了研究。化合物Th(TPPO)_2(dbm)(NO_3)为淡黄色晶体。晶体结构测定表明,它属正交晶系;P2_12_12_1空间群;晶胞参数为a=15.5920(39)A,b=17.4189(62)A,c=17.9819(47)A;z=4。3916个大于3σ(Ⅰ)的反射点参加最小二乘修正,最终偏离因子R=0.027。该配合物中,中心离子Th~(4+)的周围有十个氧原子与之配位,三个硝酸根和三苯基甲酰甲烷均系双基配位。十个配位氧原子所构成的配位多面体是不规则多面体。
This work synthesized five ternary complexes of thorium (Ⅳ) with β-diketone and triphenylphosphine oxide. The chemical formulas of Th (TPPO) _2 (L) (NO3) _3 (L = dbm, bzac, bfac, TTA) and Th (TPPO) _2 (tfac) _2 (NO_3) _2 and an intermediate complex Th ) _2 (NO) _4, their properties were studied by conductance, heat spectrum, UV and IR spectra. The compound Th (TPPO) _2 (dbm) (NO_3) is light yellow crystal. The results of crystal structure show that it belongs to the orthorhombic system; space group P2_12_12_1; unit cell parameters are a = 15.5920 (39) A, b = 17.4189 (62) A, c = 17.9819 (47) A; z = 4.3916 Reflecting points larger than 3σ (I) participate in the least square correction with a final deviation factor of R = 0.027. In this complex, there are ten oxygen atoms around the central ion Th ~ (4 +), and the three nitrate and triphenylformate are both bidentate. Coordination polyhedron composed of ten coordination oxygen atoms is irregular polyhedron.