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合成了三(三苯基氧膦)合硝酸镧络合物,经鉴定确定络合物化学式为La(NO_3)_3·3ph_3PO·C_2H_5OH·CHCl_3.其中C_2H_5OH和CHCl_3为溶剂化分子。经X射线单晶衍射,测定了该络合物属单斜晶系P2_1/n空间群,晶体学参数如下a=13,111(5)(?) Z=4b=25.075(000)=2687.65c=18μ吸收系数=9.83(cm~(-1))β=98.53(3)°d计算=1.45gcm~(-3)V=608~3 d实验=1.43gcm~(-3)La与9个氧直接配位,其中六个氧来自三个双卤配位硝酸根,另三个氧分别由三个苯基氧膦上的膦酰基所提供。La-O平均键长2
The complex of tris (triphenylphosphine oxide) and lanthanum nitrate was synthesized and identified as La (NO_3) _3 · 3ph_3PO · C_2H_5OH · CHCl_3 with C_2H_5OH and CHCl_3 as solvating molecules. The complex was determined to be a monoclinic P2_1 / n space group by X-ray single crystal diffraction. The crystallographic parameters are as follows: a = 13,111 (5) Z = 4b = 25.075 (000) = 2687.65c = 18μ Absorption coefficient = 9.83 (cm -1) β = 98.53 (3) ° d Calculation = 1.45gcm -3 V = 608-3d Experiment = 1.43gcm -3 La and 9 oxygen directly Coordination, in which six oxygen from the three disilicate nitrate, and the other three oxygen phosphine respectively from three Phosphine provided. La-O average key length 2