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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Thiophosphoryl Complexes of Trivalent Lanthanide Cations: Importance of Counterions and Stoichiometry for Binding Energies. A Theoretical Study
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Thiophosphoryl Complexes of Trivalent Lanthanide Cations: Importance of Counterions and Stoichiometry for Binding Energies. A Theoretical Study

机译:三价镧系阳离子的硫代磷酰基复合物:抗衡离子的重要性和化学计量学的结合能。理论研究

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摘要

The intrinsic interaction energies #DELTA#E between trivalent lanthanide cations (M~(3+) =La~(3+), Eu~(3+), and Yb~(3+)) and thiophosphoryl R_3P velerce S(R=H,Me,Et,and Ph)ligands L are investigated by quantum mechanical calculations on charged LM~(3+) or neutral LMCl_3 and L_2MCl_3 complexes. Counterions are found to markedly modulate the binding properties. First, in 1:1 complexes, the order of the alkyl and phenyl substituent effects is inversed in R_3PM~(3+) (where #DELTA#E increases in the order R=MeEtPh) compared to R_3PMCl_3 (where #DELTA#E increases in the order R = Ph < Me
机译:三价镧系元素阳离子(M〜(3+)= La〜(3 +),Eu〜(3+)和Yb〜(3+))与硫代磷酰基R_3P天鹅绒S(R =通过对带电的LM〜(3+)或中性LMCl_3和L_2MCl_3配合物的量子力学计算,研究了H,Me,Et和Ph)配体L。发现抗衡离子显着调节结合特性。首先,在1:1配合物中,烷基和苯基取代基效应的顺序在R_3PM〜(3+)中相反(其中#DELTA#E与R_3PMCl_3相比,以R = Me Et Ph的顺序增加(其中#DELTA#E按R = Ph

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