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合成了1—苯基—3—甲基—4—苯甲酰基—吡唑啉酮—5(PMBP)和路易斯碱的三价轻希土三元配合物LnA_3·L(A=Pmbp~-;L=C_2H_5OH时,Ln=La、Pr、Sm、对Gd为GdA_3·(C_2H_5OH)_(0·25);L=Phen(邻菲罗啉)时,Ln=Pr-Gd,L=TBPO(三丁基氧化膦)时,Ln=La、Pr—Gd)。测定了它们的摩尔电导值、热谱、红外光谱、可见—紫外光谱、荧光光谱和质子核磁共振谱。观察到热稳定性次序为LnA_3·Phen>LnA_3·TBPO。从同类型配合物系列的热效应值、LnA_3·Phen型配合物的合成难易程度及其紫外最大吸收波长的移动可观察到镧系收缩现象。
The trivalent complex LnA_3 · L (A = Pmbp ~ -) of trivalent light earth with 1-phenyl-3-methyl-4-benzoyl-pyrazolone-5 (PMBP) and Lewis base Ln = Pr-Gd, L = TBPO (tris) when L = C 2 H 5 O, Ln = La, Pr, Sm for Gd and GdA 3 · (C 2 H 5 O) Butylphosphine oxide), Ln = La, Pr-Gd). Their molar conductivities, thermospecies, infrared spectra, visible-ultraviolet spectra, fluorescence spectra and proton nuclear magnetic resonance spectra were measured. The order of thermal stability was observed to be LnA_3 · Phen> LnA_3 · TBPO. The lanthanide shrinkage phenomenon can be observed from the thermal effect value of the same type of complex series, the ease of synthesis of the LnA_3 · Phen complex and the shift of the ultraviolet maximum absorption wavelength.