Field-induced single-molecule magnet behaviour in a series of dinuclear cobalt(III,II) complexes
作者:Abhisek Banerjee、Carlos J. Gómez García、Samia Benmansour、Rosa M. Gomlia、Antonio Frontera、Shouvik Chattopadhyay
DOI:10.1016/j.poly.2022.115802
日期:2022.7
crystal X-ray structures of complexes 1–4 show that both cobalt centres in the four complexes adopt a distorted octahedral geometry with Co(III) and Co(II) centres residing at inner N2O2 and outer O4 pockets of the reduced Schiff base, respectively. Magnetic measurements show that all complexes behave as Co(II) monomers, confirming the presence of diamagnetic low spin Co(III) ions, which have also been
我们介绍了四种双核钴 (III,II) 配合物的合成、结构和磁性表征:[(NCS)Co III (L n )(µ–OAc)Co II (NCS)]·G,n/G = 1 /CH 3 OH ( 1 )、2/CH 3 CN ( 2 )、3/- ( 3 ) 和 4/CH 3 OH ( 4 ),即 H 2 L n,四种密切相关的还原席夫碱配体:H 2 L 1 = (1,3-丙二基)双(亚胺亚甲基)双(6-甲氧基苯酚), H 2 L 2 = (1,3-丙二基)双(亚胺亚甲基)双(6-乙氧基苯酚), H 2 L3 = (2,2-二甲基-1,3-丙二基)-双(亚胺亚甲基)双(6-甲氧基苯酚)和H 2 L 4 = (2,2-二甲基-1,3-丙二基)-双(亚胺亚甲基)双(6-乙氧基苯酚)。配合物1-4的单晶 X 射线结构表明,四个配合物中的钴中心均采用扭曲的八面体几何形状,Co(III) 和 Co(II) 中心位于内部