Mononuclear and icosanuclear spin-crossover complexes, [FeII(HL)2](BF4)2 (1) and [FeII20(L)24](BF4)16 (2), were synthesized using an asymmetric multidentate ligand (HL). 1 has a bis-chelate structure with two protonated ligands, while 2 has a ring-shape structure comprising four [2 × 2] grid moieties and four mononuclear units.
使用不对称多齿
配体合成了单核和二十核自旋交叉复合物 [Fe II (HL) 2 ](BF 4 ) 2 ( 1 ) 和 [Fe II 20 (L) 24 ](BF 4 ) 16 ( 2 ) (HL)。1具有带有两个质子化
配体的双螯合物结构,而2具有包含四个 [2 × 2] 网格部分和四个单核单元的环状结构。