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Redox- and solvato-magnetic switching in a tetrathiafulvalene-based triad single-molecule magnet
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2020-04-27 , DOI: 10.1039/d0qi00319k Fabrice Pointillart 1, 2, 3, 4, 5 , Jessica Flores Gonzalez 1, 2, 3, 4, 5 , Vincent Montigaud 1, 2, 3, 4, 5 , Lorenzo Tesi 6, 7, 8, 9, 10 , Vladimir Cherkasov 11, 12, 13 , Boris Le Guennic 1, 2, 3, 4, 5 , Olivier Cador 1, 2, 3, 4, 5 , Lahcène Ouahab 1, 2, 3, 4, 5 , Roberta Sessoli 6, 7, 8, 9 , Viacheslav Kuropatov 11, 12, 13
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2020-04-27 , DOI: 10.1039/d0qi00319k Fabrice Pointillart 1, 2, 3, 4, 5 , Jessica Flores Gonzalez 1, 2, 3, 4, 5 , Vincent Montigaud 1, 2, 3, 4, 5 , Lorenzo Tesi 6, 7, 8, 9, 10 , Vladimir Cherkasov 11, 12, 13 , Boris Le Guennic 1, 2, 3, 4, 5 , Olivier Cador 1, 2, 3, 4, 5 , Lahcène Ouahab 1, 2, 3, 4, 5 , Roberta Sessoli 6, 7, 8, 9 , Viacheslav Kuropatov 11, 12, 13
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The first simultaneous redox and solvato-magnetic switching was achieved. The dinuclear complex [Dy2(hfac)6(H2SQ)]·CH2Cl2 (Dy2H2SQ) (where hfac = 1,1,1,5,5,5-hexafluoroacetylacetonate and H2SQ = 2,2′-benzene-1,4-diylbis(6-hydroxy-4,7-di-tert-butyl-1,3-benzodithiol-2-ylium-5-olate) was reversibly oxidized into the dinuclear complex [Dy2(hfac)6(H2O)2(Q)] (Dy2Q) (where Q = 2,2′-cyclohexa-2,5-diene-1,4-diylidenebis(4,7-di-tert-butyl-1,3-benzodithiole-5,6-dione)) inducing the reversible coordination of water molecules to the DyIII ion. Magnetic susceptibility measurements and ab initio CASSCF/SI-SO calculations, confirmed by Cantilever Torque Magnetometry measurements, demonstrated that Dy2H2SQ is a Single-Molecule Magnet with a magnetic relaxation 7000 times slower than Dy2Q (at 3 K) allowing a “ON–OFF” switching of the magnetic bistability.
中文翻译：
基于四硫富瓦烯的三合一单分子磁体中的氧化还原和溶剂化磁性转换
首次实现了同时的氧化还原和溶剂磁转换。双核配合物[Dy 2（hfac）6（H 2 SQ）]·CH 2 Cl 2（Dy 2 H 2 SQ）（其中hfac = 1,1,1,5,5,5,5-六氟乙酰丙酮和H 2 SQ = 2,2'-苯-1,4-二基双（6-羟基-4,7-二叔丁基-1,3-苯并二硫醇-2-基-5-羟乙基磺酸盐）可逆地氧化为双核络合物[Dy 2（hfac）6（H 2 O）2（Q）]（Dy 2 Q）（其中Q = 2,2'-环己-2,5-二烯-1,4-二亚甲基二（4,7-二叔丁基-1,3-苯并二硫基-5,6-二酮））诱导可逆水分子与Dy III离子的配位。磁化率测量和从头算CASSCF / SI-SO计算（通过悬臂扭矩磁强计测量证实）表明Dy 2 H 2 SQ是单分子磁体，磁弛豫比Dy 2 Q（在3 K下）慢7000倍，磁性双稳态的“ ON-OFF”切换。
更新日期：2020-04-27
中文翻译：
基于四硫富瓦烯的三合一单分子磁体中的氧化还原和溶剂化磁性转换
首次实现了同时的氧化还原和溶剂磁转换。双核配合物[Dy 2（hfac）6（H 2 SQ）]·CH 2 Cl 2（Dy 2 H 2 SQ）（其中hfac = 1,1,1,5,5,5,5-六氟乙酰丙酮和H 2 SQ = 2,2'-苯-1,4-二基双（6-羟基-4,7-二叔丁基-1,3-苯并二硫醇-2-基-5-羟乙基磺酸盐）可逆地氧化为双核络合物[Dy 2（hfac）6（H 2 O）2（Q）]（Dy 2 Q）（其中Q = 2,2'-环己-2,5-二烯-1,4-二亚甲基二（4,7-二叔丁基-1,3-苯并二硫基-5,6-二酮））诱导可逆水分子与Dy III离子的配位。磁化率测量和从头算CASSCF / SI-SO计算（通过悬臂扭矩磁强计测量证实）表明Dy 2 H 2 SQ是单分子磁体，磁弛豫比Dy 2 Q（在3 K下）慢7000倍，磁性双稳态的“ ON-OFF”切换。
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