%0 Journal Article
%T Synthesis, structure and red-light emission of a manganese halide directed by a methyldiphenylphosphine oxide complex.
%A Li JW
%A Niu M
%A Feng W
%A Dong W
%A Liu Y
%A Yang J
%A Wang C
%A Zhang H
%A Song WW
%J Acta Crystallogr C Struct Chem
%V 80
%N 0
%D 2024 Aug 1
%M 38995666
%F 1.184
%R 10.1107/S2053229624006405
%X Controlling the optical activity of halide perovskite materials through modulation of the coordination configurations of the metal ions is important. Herein, a novel manganese-based halide, specifically diaquatetrakis(methyldiphenylphosphine oxide)manganese(II) tetrachloridomanganate(II), [Mn(C13H13OP)4(H2O)2][MnCl4] or [Mn(MDPPO)4(H2O)2][MnCl4] (MDPPO is methyldiphenylphosphine oxide), was synthesized through the solvothermal reaction of MnCl2 with the neutral molecule MDPPO. In this compound, [Mn(MDPPO)4(H2O)2]2+ acts as the cation, while [MnCl4]2- serves as the anion, enabling the co-existence of tetrahedral and octahedral structures within the same system. Remarkably, the compound exhibits efficient red-light emission at 662 nm, distinct from the green-light emission typically observed in MnX4-based halides. Theoretical calculations show that the red emission comes from the charge transfer from the MDPPO to the Mn2+ of [MnCl4]2-. This work provides a new perspective for the design and synthesis of red-light-emitting manganese-based halides with unique structures.