【摘要】 通过光声光谱对固态 Nd化合物的 f -f跃迁进行了研究。根据 Nd F3、Nd(sal) 3· H2 O和 Nd(sal) 3(phen) 2 的谱峰位置 ,计算了它们的电子云重排参数β、键合参数 b1/2 和 Sinha共价参数δ,表明三元配合物中钕离子形成键的共价程度最高 ,而 Nd F3中键的共价性最弱。通过光声支量表征了不同化合物中 Nd3+ 的 f -f跃迁光声强度的变化 ,证实了随着键的共价程度增加和配位数的增大 ,超灵敏跃迁强度显著增大更多还原

【Abstract】 The photoacoustic (PA) spectra of NdF 3, Nd(sal) 3·H 2O and Nd(sal) 3(phen) 2 are reported. The nephelauxetic ratio β , bonding parameter b 1/2 and Sinha parameter δ are calculated based on their PA spectra. The variation of these parameters and correlation of them with the nature of metal ligand bonding are discussed. The intensity analysis of Nd f f transitions is carried out by calculating the PA branching vector. As the “degree of covalence” and the coordination number increase, the PA branching vector of the hypersensitive transition exhibits a corresponding increase.更多还原