Synthesis of copper(<scp>i</scp>) cyclic (alkyl)(amino)carbene complexes with potentially bidentate N^N, N^S and S^S ligands for efficient white photoluminescence
作者:Alexander S. Romanov、Florian Chotard、Jahan Rashid、Manfred Bochmann
DOI:10.1039/c9dt02036e
日期:——
corresponding S- or N-bound copper complexes (Me2L)Cu(S^S) 1–3, (Me2L)Cu(N^N) 4/5 and (Me2L)Cu(N^S) 6 (aryl = 2,6-diisopropylphenyl; Me2L = 2,6-bis(isopropyl)phenyl-3,3,5,5-tetramethyl-2-pyrrolidinylidene). The crystal structure of (Me2L)Cu(S2CCz) (3) confirmed the three-coordinate geometry with S^S chelation and perpendicular orientation of the carbene and S^S ligands. On heating 3 cleanly eliminates
(Me 2 L)CuCl与NaS 2 CX [X = OEt,NEt 2或咔唑酯(Cz)]或与1,3-二芳基胍,1,3-二芳基甲am或硫代乙酰苯胺的反应在KO t Bu存在下提供相应的S-或N-结合的铜络合物(我2 L)的Cu(S ^ S)1-3,(我2 L)的Cu(N ^ N)4 / 5和(我2 L)的Cu(N 2 -S )6(芳基= 2,6-二异丙基苯基;Me 2 L = 2,6-双(异丙基)苯基-3,3,5,5-四甲基-2-吡咯烷基亚烷基)。(Me 2 L)Cu(S2 CCz)( 3)证实了三坐标几何结构,具有S ^ S螯合以及卡宾和S ^ S配体的垂直取向。加热3会干净地消除CS 2并形成( Me 2 L)CuCz。N结合的复合物显示出严重扭曲的T形( 4)或不扭曲的线性( 5)几何形状。在紫外光激发下,S结合的配合物被证明是非发射性的,而胍基和甲酰胺基配合物则具有强烈的磷光性,固