Effect on the geometry over the slow relaxation of the magnetization in a series of erbium(<scp>iii</scp>) complexes based on halogenated ligands
作者:Jérôme Long、Dmitry M. Lyubov、Alexander A. Kissel'、Ilia A. Gogolev、Andrey A. Tyutyunov、Yulia V. Nelyubina、Fabrice Salles、Yannick Guari、Anton V. Cherkasov、Joulia Larionova、Alexander A. Trifonov
DOI:10.1039/d2ce00856d
日期:——
We report the synthesis, crystal structures, and magnetic and theoretical investigations of five erbium complexes based on halogenated ligands with the respective formulas trans-[Er(L1)3(THF)2] (1), trans-[Er(L2)3(Ph3PO)2] (2), fac-[Er(L3)3(THF)3] (3), fac-[Er(L4)3(Ph3PO)3] (4), and [Er(L5)3] (5) (L1 = OCPh2(CF2Cl), L2 = OCPh(CF3)2, L3 = OCH(C6F5)2, L4 = OCHMe(C6F5), L5 = 1,8-dibromo-3,6-di-tert-butylcarbazol-9-ide
我们报告了基于卤化配体的五种铒配合物的合成、晶体结构以及磁性和理论研究,各自的分子式为trans -[Er(L 1 ) 3 (THF) 2 ] ( 1 )、trans -[Er(L 2 ) ) 3 (Ph 3 PO) 2 ] ( 2 ), fac -[Er(L 3 ) 3 (THF) 3 ] ( 3 ), fac -[Er(L 4 ) 3 (Ph 3 PO) 3 ] ( 4) 和 [Er(L 5 ) 3 ] ( 5 ) (L 1 = OCPh 2 (CF 2 Cl), L 2 = OCPh(CF 3 ) 2 , L 3 = OCH(C 6 F 5 ) 2 , L 4 = OCHMe(C 6 F 5 ), L 5 = 1,8-二溴-3,6-二叔丁基咔唑-9-ide, THF = 四氢呋喃)。调节实验条件允许控制所得配合物的配位几何结构。虽然1和2采用三角双锥几何形状,3和4表现出扭曲的八面体