2-Methylimidazolium tetrakis(2-thenoyltrifluoroacetonato-κ2O,O′)neodymium(III)

IUCrData Pub Date : 2025-06-01 DOI:10.1107/S2414314625005693

José Manuel Bravo-Arredondo , Sylvain Bernès , Karen Mejía , Bertin Anzaldo , Erick Ramírez , David Moro

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Abstract

The title neodymium salt includes anions and cations linked by N—H⋯O hydrogen bonds to form zigzag chains extending along [001] in the crystal.

The title complex, (C₄H₇N₂)[Nd(C₈H₄F₃O₂S)₄], is a salt formed via the acid–base reaction between 2-thenoyltrifluoroacetone (HTTA) and 2-methylimidazole (MeIm) in presence of neodymium(III) trifluoromethanesulfonate. The resulting compound features [Nd(TTA)₄]⁻ anions with the central rare-earth metal cation placed on a twofold rotation axis, and [MeImH]⁺ cations, disordered over an inversion centre. Cations and anions are linked through N—H⋯O hydrogen bonds to form zigzag chains running along [001].

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2-甲基咪唑四基斯-（2-烯酰三氟丙酮酸-κ 2O，O'）

标题配合物（C4H7N2）[Nd(C8H4F3O2S)4]是在（III）三氟甲烷磺酸钕存在下，由2-烷基三氟丙酮（HTTA）和2-甲基咪唑（MeIm）之间的酸碱反应形成的盐。所得到的化合物的特征是[Nd(TTA)4]-阴离子的中心稀土金属阳离子位于双旋转轴上，而[MeImH]+阳离子在反转中心上无序。阳离子和阴离子通过N-H - O氢键连接，形成沿[001]运行的之字形链。

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