作者:Trommer, Clara、Kuhlemann, Eike、Engesser, Tobias A.、Walter, Marcel、Thakur, Sangeeta、Kuch, Wolfgang、Tuczek, Felix
DOI:10.1039/d4dt00707g
日期:——
well-studied mononuclear spin crossover compound [Fe(H2B(pz)2)2(bipy)], the bipyridine-based bisbidentate ligands 1,2-di(2,2′-bipyridin-5-yl)ethyne (ac(bipy)2) and 1,4-di(2,2′-bipyridine-5-yl)-3,5-dimethoxybenzene (Ph(OMe)2(bipy)2) are used to bridge two [Fe(H2B(pz)2)2] units, leading to the charge-neutral dinuclear iron(II) compounds [Fe(H2B(pz)2)2}2 μ-(ac(bipy)2)] (1) and [Fe(H2B(pz)2)2}2 μ-(Ph(OMe)2(bipy)2)]
受充分研究的单核自旋交叉化合物 [Fe(H 2 B(pz) 2 ) 2 (bipy)] 的启发,基于联吡啶的双齿配体 1,2-di(2,2'-bipyridin-5-yl)乙炔 (ac(bipy) 2 ) 和 1,4-二(2,2′-联吡啶-5-基)-3,5-二甲氧基苯 (Ph(OMe) 2 (bipy) 2 ) 用于桥接两个 [Fe (H 2 B(pz) 2 ) 2 ]单元,产生电荷中性双核铁( II )化合物[Fe(H 2 B(pz) 2 ) 2 } 2 μ-(ac(bipy) 2 )]分别为( 1 ) 和[Fe(H 2 B(pz) 2 ) 2 } 2 μ-(Ph(OMe) 2 (bipy) 2 )] ( 2 )。通过温度依赖性 PPMS 测量、穆斯堡尔谱、振动和紫外/可见光谱以及 X 射线吸收光谱研究这些分子的自旋交叉特性。化合物1经历了完整的 SCO( T 1/2 = 125 K