| 镧系β-二酮-吡啶衍生物三元体系中f-f跃迁光谱的研究 |
| f-f SPECTRAL STUDIES OF LANTHANIDES-B-DIKETONES-PYRIDINE DERIVATIVES TERNARY COMPLEXES |
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| 摘要: 本文研究了Pr3+、Nd3+、Ho3+、Er3+四种离子在乙醇介质中与噻吩甲酰三氟丙酮(TTA)、1-苯基-3-甲基-4-苯甲酰基-吡唑酮-5(PMBP)、乙酰丙酮(AA)、二苯甲酰甲烷(DBM)或者苯甲酰丙酮(BA)所形成的二元配合物,以及这些二元配合物与吡啶衍生物所形成的三元配合物的吸收光谱,根据Judd-Ofelt方程计算了各跃迁的振子强度以及方程中的强度参数T2、T4及T8,对Nd3+、Ho3+、Er3+的各个体系而言,超灵敏跃迁的振子强度与参数T2明显相关。其相关系数为0.92-0.99,符合P=aT2+b直线方程,而Pr3+则例外。根据配合物吸收峰的红移,计算了Ln3+-TTA-吡啶衍生物体系的共价参数。 |
| 关键词: 超灵敏跃迁 f-f光谱 镧系三元配合物 |
| 基金项目: 中国科学院科学基金 |
| Abstract: The f-f spectra of 20 binary complexes of the trivalent lanthanides (Ln = Pr, Nd, Ho, and Er) with B-diketones such as acetylacetone(AA), ben-zoylacetone (BA), dibenzoylmethane (DBM), 2-thenoyl trifluoroacetone (TTA), l-phenyl-3-methyl-4-benzoyl-pyrazolone-5(PMBP), and 100 ternary complexes, which are formed by adding 5 pyridine derivatives into the above solutions, have been studied. The intensities of the spectra (P) and the intensity parameters (T2, T4. and T6) have been calculated by means of Judd-Ofelt equation.In all of the systems for Nd, Ho and Er, the P values of the hypersensitive transitions are correlated to the T2, i.e. obey the equation P = aT2+b, where a and b ate the coefficients and the correlativity is about 0.92-0.99. In the present paper, we have also studied the covalency parameters of the ternary complexes. |
| Keywords: hypersensitive transition f-f spectra lanthanide ternary complexes |
| 投稿时间：1985-06-05 |
| 摘要点击次数: 2712 |
| 全文下载次数: 1803 |
| 白光弼,陈如瑶,康敬万,高锦章.镧系β-二酮-吡啶衍生物三元体系中f-f跃迁光谱的研究[J].无机化学学报,1986,2(3):44-53. |
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