Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia, Via Torino 155, 30170 Mestre (VE), Italy.
Departamento de Química Inorgánica, Universidade de Vigo, Facultade de Química, Edificio de Ciencias Experimentais, 36310 Vigo, Galicia, Spain.
Dalton Trans. 2020 Jun 9;49(22):7525-7534. doi: 10.1039/d0dt01659d.
The reaction of N,N,N',N'-tetramethyl-P-indol-1-ylphosphonic diamide (L) with Mn(ii) halides under mild conditions allowed the isolation of tetrahedral neutral complexes having the general formula [MnX2L2] (X = Cl, Br, I). The structures of the new coordination compounds were ascertained by single-crystal X-ray diffraction. The three species exhibited noticeable luminescence in the green region upon excitation with UV light, with emissions related to the Mn(ii) 4T1(4G) → 6A1(6S) transition, without appreciable luminescence from the coordinated ligands. Luminescence was caused by both metal and ligand excitations. The good light harvesting features of the indol-1-yl fragment allowed the luminescence enhancement with respect to comparable phenyl-substituted derivatives.
N,N,N',N'-四甲基-P-吲哚-1-基膦二酰胺（L）与 Mn(ii)卤化物在温和条件下的反应允许分离出具有通式[MnX2L2]（X = Cl、Br、I）的四面体型中性配合物。新配位化合物的结构通过单晶 X 射线衍射确定。三种物质在紫外光激发下在绿光区域表现出明显的发光，发光与 Mn(ii) 4T1(4G) → 6A1(6S)跃迁有关，配位配体没有明显的发光。发光是由金属和配体激发引起的。吲哚-1-基片段良好的光收集特性使得发光相对于可比的苯基取代衍生物得到增强。
