Complexes of sterically-hindered amidinate ligands with first-row transition metals are described. The amidinate ligands feature bulky terphenyl substituents [2,6-(2,4,6-Me3Ph)2Ph or 2,6-(4-tBuPh)2Ph] attached to the backbone carbon atoms, providing bowl-shaped ligand environments. When employing divalent transition metal halides, bis-amidinate metal complexes are formed exclusively, whereas the use of Ni(acac)2 or CuCl allows access to mono-amidinate species. Additionally, the solid-state structure of one mono-amidinate [(LBut)Ni(acac)] and three bis-amidinate complexes [(LMe)2M; M = Mn, Co, Ni] are presented.
                                    描述了空间位阻脒
配体与第一行过渡
金属的配合物。脒
配体具有连接到主链碳原子上的大三
联苯取代基 [2,6-(2,4,6-Me3Ph)2Ph 或 2,6-(4-tBuPh)2Ph],提供碗形
配体环境。当使用二价过渡
金属卤化物时,仅形成双脒酸盐
金属配合物,而使用Ni(acac)2或CuCl则可以得到单脒酸盐物质。此外,一个单脒盐[(LBut)Ni(acac)]和三个双脒盐络合物[(LMe)2M;的固态结构M = Mn, Co, Ni] 被提出。