Evaluating the high-pressure structural response and crystal lattice interactions of the magnetically-bistable organic radical TTTA

Evaluating the high-pressure structural response and crystal lattice interactions of the magnetically-bistable organic radical TTTA
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评估磁双稳态有机自由基 TTTA 的高压结构响应和晶格相互作用

DOI:
10.1039/d1ce00577d
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发表时间:
2021
期刊:
影响因子:
3.1
通讯作者:
Moggach Stephen A.
Moggach Stephen A.
中科院分区:
化学3区
文献类型:
--
作者:
Richardson Jonathan G.;Mizuno Asato;Shuku Yoshiaki;Awaga Kunio;Robertson Neil;Morrison Carole A.;Warren Mark R.;Allan David R.;Moggach Stephen A.

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磁双稳态以前已被观察到,并在有机噻唑自由基1,3,5-三硫杂-2,4,6-三氮杂并环戊二烯基(TTTA)的评价。本文中,TTTA的结构-压力响应已经通过X射线衍射进行了评估,其中高达4.6 GPa的结构相变的缺乏证明了顺磁抑制是由包含自由基电子的部分之间的分离沿着沿着π堆积链的稳定减少引起的。整个晶格中的分子间相互作用也已使用PIXEL方法计算,并强调在两个已知的多晶型物的TTTA,这提供了额外的理由宽的磁滞的原因,其响应压力的柱间相互作用的相对强度。
Magnetic bistability has previously been observed and evaluated in an organic thiazyl radical 1,3,5-triathia-2,4,6-triazapentalenyl (TTTA). Herein, the structure-pressure response of TTTA has been evaluated by X-ray diffraction, where a lack of a structural phase transition up to 4.6 GPa certifies that the paramagnetic suppression is caused by a steady decrease in the separation between the moieties containing the radical electron along the π-stacking chains. The intermolecular interactions throughout the crystal lattice have also been calculated using the PIXEL method, and highlight the relative strength of the inter-column interactions in the two known polymorphs of TTTA, which provides extra justification for the cause of the wide magnetic hysteresis and its response to pressure.
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