Bis(l-leucinium) hexachloridostannate(IV) dihydrate

IUCrData Pub Date : 2025-08-01 DOI:10.1107/S2414314625006765

Rochdi Ghallab , Amina Kemmouche , Mehdi Boutebdja , Stéphane Golhen

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Abstract

The l-leucinium cations in the title compound adopt extended conformations that maximize the separation between the methyl groups [–CH(CH₃)₂] and the polar NH₃⁺ and COOH groups.

The title compound, (C₆H₁₄NO₂)₂[SnCl₆]·2H₂O, features l-leucinium cations adopting extended conformations, which maximizes the separation between the methyl groups [–CH(CH₃)₂] and the polar NH₃⁺ and COOH moieties. Additionally, an intramolecular hydrogen bond between the ammonium (NH₃⁺) group and the carboxyl group induces a slight reduction in the C—C—N bond angles, with an average value of 106.5°, compared to the ideal tetrahedral angle of 109.5°. The NH₃⁺ group is nearly coplanar with the C—C—C—C carbon chain in both fragments, whereas the carboxyl (COOH) group and the methyl group at the C5 position deviate significantly from this plane. The octahedral complex anion is close to regular. In the crystal, an extensive network of hydrogen bonds links the components into a three-dimensional network.

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二水合六氯锡酸双（l-leucinium）。

标题化合物（C6H14NO2）2[SnCl6]·2H2O具有扩展构象的l-leucinium阳离子，这使得甲基[-CH(CH3)2]与极性NH3 +和COOH基团之间的分离最大化。此外，氨（NH3 +）基团与羧基之间的分子内氢键导致C-C-N键角轻微减小，其平均值为106.5°，而理想四面体角为109.5°。在两个片段中，NH3 +基团与C-C-C-C碳链几乎共面，而羧基（COOH）和C5位置的甲基则明显偏离这个平面。八面体阴离子配合物接近规则。在晶体中，一个广泛的氢键网络将这些成分连接成一个三维网络。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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