Indium trichloride reacts with 1 equivalent of MeN(SiMe2NMeLi)2 to give the dimer [ClIn(NMeSiMe2)2NMe]2 and with 4 equivalents of HNMeSiMe2NMeLi to give [LiIn(HNMeSiMe2NMe)2(MeNSiMe2NMe)}]2. In the structure of [ClIn(NMeSiMe2)2NMe]2 a chloride and one amide group of a [MeN(SiMe2NMe)2]2– ligand are bonded to each In atom in terminal positions and the other amide group of the chelating ligand is shared between two In atoms. The terminal chlorides have an anti-ClIn· · ·InCl arrangement. The amine group of the [MeN(SiMe2NMe)2]2– ligand does not interact with In. Variable temperature NMR spectra show [ClNn(NMeSiMe2)2NMe]2 undergoes a fluxional process, and a mechanism involving bridge–terminal amide exchange is proposed to account for the data. The molecule [LiIn(HNMeSiMe2NMe)2(MeNSiMe2NMe)}]2 has a Li2In2Si2N4 adamantane-like core and overall virtual D2 symmetry.
三氯化铟与 1 个当量的 MeN(SiMe2NMeLi)2 反应生成二聚体 [ClIn(NMeSiMe2)2NMe]2,与 4 个当量的 HNMeSiMe2NMeLi 反应生成 [LiIn(HNMeSiMe2NMe)2(MeNSiMe2NMe)}]2。在[ClIn(NMeSiMe2)2NMe]2 的结构中,[MeN(SiMe2NMe)2]2-
配体的一个
氯化物和一个酰胺基团在末端位置与每个 In 原子键合,螯合
配体的另一个酰胺基团在两个 In 原子间共享。末端的
氯化物呈反-ClIn- -InCl排列。MeN(SiMe2NMe)2]2-
配体的胺基团与 In 原子没有相互作用。变温核磁共振光谱显示[ClNn(NMeSiMe2)2NMe]2 经历了一个通量过程,并提出了一种涉及桥端酰胺交换的机制来解释这些数据。分子[LiIn(HNMeSiMe2NMe)2(MeNSiMe2NMe)}]2具有类似
金刚烷的 Li2In2Si2N4 内核和整体虚拟 D2 对称性。