Ditelluride, Terminal Tellurido, and Bis(tellurido) Motifs of Titanium
Ditelluride, Terminal Tellurido, and Bis(tellurido) Motifs of Titanium
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钛的二碲化物、末端碲化物和双（碲化物）图案
DOI：
10.1021/jacs.2c05558
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发表时间：
2022
影响因子：
15
通讯作者：
Mindiola, Daniel J.
中科院分区：
文献类型：
--
作者：
Zatsepin, Pavel;Kim, Jun-Hyeong;Gau, Michael R.;Carroll, Patrick J.;Pudasaini, Bimal;Baik, Mu-Hyun;Mindiola, Daniel J.
本研究公开了含有二碲化物、末端碲化物和双（碲化物）结构基序的钛化合物的高度模块化和合理的合成。带有与同一金属中心结合的双顺和末端碲化物官能团的钛酸盐阴离子代表了第 4 族过渡金属双（硫属化物）离子的独特示例，并且可以在外球还原剂和至少 3 当量的 Te2O 粉末存在下通过简单的单步程序从 Ti(III) 双（烷基）配合物中获得。这些化合物已通过晶体学和光谱学进行了表征，并报道了阴离子 Ti(=Te)2 基序的一些初步反应性。除了解决这些钛酸酯双（碲）体系的键合和结构的理论研究之外，我们还报告了溶液 125Te NMR 光谱数据。
Highly modular and rational syntheses of titanium compounds containing ditelluride, terminal telluride, and bis(telluride) structural motifs are disclosed in this study. Titanate anions bearing twocisand terminal telluride functionalities bound to the same metal center represent a unique example of a group 4 transition metal bis(chalcogenide) ion and are accessed in a simple, single-step procedure from Ti(III) bis(alkyl) complexes in the presence of an outer-sphere reductant and at least 3 equiv of Te0powder. These compounds have been characterized crystallographically and spectroscopically with some preliminary reactivity reported for the anionic Ti(═Te)2motif. We also report solution125Te NMR spectral data in addition to theoretical studies addressing the bonding and structure for these titanate bis(tellurido) systems.