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.
中科院分区:
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.
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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