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Synthesis and Structural Diversity of Lanthanum and Neodymium Triphenylacetate Complexes with Trimethyltriazacyclohexane and Crown Ether
Russian Journal of Coordination Chemistry ( IF 1.9 ) Pub Date : 2020-05-14 , DOI: 10.1134/s1070328420050097
A. A. Vinogradov , K. A. Lysenko , I. V. Anan’ev , I. E. Nifant’ev , D. M. Roitershtein

Abstract

The reactions of lanthanum and neodymium triphenylacetates with polydentate 6- and 18-membered N- and O-heterocyclic ligands give various types of mononuclear triphenylacetate complexes containing a polydentate auxiliary ligand (neutral or cationic and anionic): [Nd(Ph3CCOO)3(Me3TACH)] ∙ CHCl3 (II), [La(Ph3CCOO)4(Me3TACH)][NH4Me]+ (III), [La(Ph3CCOO)3(18-crown-6)] (IV), and [Nd(Ph3CCOO)2(18-crown-6)]+[Nd(Ph3CCOO)4] (V) and binuclear complex [La2(Ph3CCOO)3-(Me3TACH)] ∙ 2C6H5CH3 (I) (CIF files CCDC no. 1968815 (I), 1968813 (II), 1968814 (III), 1968812 (IV), and 1968816 (V)). A minor change in the ionic radius, e.g., on going from La to Nd, results in a changed coordination environment. These changes can be followed using macrocyclic polydentate ligands.


中文翻译:

三甲基三氮杂环己烷和冠醚的镧和三苯基乙酸钕配合物的合成和结构多样性

摘要

镧和三苯基乙酸钕与多齿6和18元N和O杂环配体的反应产生了各种类型的单核三苯基乙酸酯配合物,其中含有多齿辅助配体(中性或阳离子和阴离子):[Nd(Ph 3 CCOO)3(Me 3 TACH)]∙CHCl 3II),[La(Ph 3 CCOO)4 [Me 3 TACH]] [NH 4 Me] +III),[La(Ph 3 CCOO)3(18冠) -6)](IV)和[Nd(Ph 3 CCOO)2(18-crown-6)]+ [Nd(Ph 3 CCOO)4 ] -V)和双核络合物[La 2(Ph 3 CCOO)3-(Me 3 TACH)]∙2C 6 H 5 CH 3I)(CIF文件CCDC编号1968815 (I),1968813(II),1968814(III),1968812(IV)和1968816(V))。离子半径的微小变化(例如,从La变为Nd时)会导致配位环境发生变化。使用大环多齿配体可以追踪这些变化。
更新日期:2020-05-14
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