Abstract

Two synthetic approaches were developed for the preparation of 3,6-di-tert-butyl-2-hydroxy-4-pyridinylphenolate (LH), a new zwitter-ionic redox-active diolate type ligand. Two heteroligand five-coordinate tin(IV) derivatives were prepared with this ligand: 3,6-di-tert-butyl-2-oxy-4-pyridinylphenolato(triphenyl)tin(IV) (I) and 3,6-di-tert-butyl-2-oxy-4-pyridinylphenolato(diphenyl)chlorotin(IV) (II). The molecular structures of the ligand LH ∙ 0.5Py and complex I ∙ CH₃CN were determined by X-ray diffraction (CIF files CCDC nos. 1974166 (LH), 1974165 (I)). It was shown that the ligand LH and the tin(IV) compound exhibit solvatochromism, which consists in a considerable blue shift with increasing solvent polarity.

中文翻译：

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3,6-二叔丁基-2-羟基-4-吡啶基酚盐和它形成的锡（IV）配合物：合成，结构细节和溶剂变色作用

摘要

开发了两种合成方法来制备3,6-二叔丁基-2-羟基-4-吡啶基酚盐（LH），这是一种新型的两性离子-氧化还原-活性二醇盐型配体。两个heteroligand五坐标锡用这种配位体来制备（IV）的衍生物：3,6-二-叔丁基-2-氧-4- pyridinylphenolato（三苯基）锡（IV）（我）和3,6-二-叔丁基-2-氧基-4-吡啶基苯酚基（二苯基）氯锡（IV）（II）。配体LH∙0.5Py和配合物I ∙CH ₃ CN的分子结构通过X射线衍射确定（CIF文件CCDC No.1974166（LH），1974165（I））。结果表明，配体LH和锡（IV）化合物表现出溶剂变色现象，随着溶剂极性的增加其蓝移明显。