Moaienla T, Singh Th David, Singh N Rajmuhon, Devi M Indira
Department of Chemistry, Nagaland University, Lumami, Mokokchung 798 601, India.
Spectrochim Acta A Mol Biomol Spectrosc. 2009 Oct 1;74(2):434-40. doi: 10.1016/j.saa.2009.06.039. Epub 2009 Jun 24.
Studying the absorption difference and comparative absorption spectra of the interaction of Pr(III) and Nd(III) with l-phenylalanine, l-glycine, l-alanine and l-aspartic acid in the presence and absence of Ca(2+) in organic solvents, various energy interaction parameters like Slater-Condon (F(K)), Racah (E(k)), Lande factor (xi(4f)), nephelauxetic ratio (beta), bonding (b(1/2)), percentage-covalency (delta) have been evaluated applying partial and multiple regression analysis. The values of oscillator strength (P) and Judd-Ofelt electric dipole intensity parameter T(lambda) (lambda = 2, 4, 6) for different 4f-4f transitions have been computed. On analysis of the variation of the various energy interaction parameters as well as the changes in the oscillator strength (P) and T(lambda) values reveal the mode of binding with different ligands.
研究了在有机溶剂中，有或没有Ca(2+)存在的情况下，Pr(III)和Nd(III)与L-苯丙氨酸、L-甘氨酸、L-丙氨酸和L-天冬氨酸相互作用的吸收差异和比较吸收光谱，应用偏回归分析和多元回归分析评估了各种能量相互作用参数，如斯莱特-康登（F(K)）、拉卡（E(k)）、朗德因子（ξ(4f)）、电子云缩小比率（β）、键合（b(1/2)）、共价百分比（δ）。计算了不同4f-4f跃迁的振子强度（P）和贾德-奥费尔特电偶极强度参数T(λ)（λ = 2, 4, 6）的值。通过分析各种能量相互作用参数的变化以及振子强度（P）和T(λ)值的变化，揭示了与不同配体的结合模式。
