[Pt(Me)(κ1-ppy)(κ2-dfppe)], 4d, was obtained, in which the ppy ligand is monodentate and dfppe is chelating, and in other cases the dimers 2j–l were formed. The results were compared, using density functional theory (DFT), with other diphosphine ligands, 1,1-bis(diphenylphosphino)methane (dppm) and 1,2-bis(diphenylphosphino)ethane (dppe) to clarify the electronic and steric effects of diphosphine ligands on their
环
金属化配合物[
PTR(CˆN)(SMe 2)] 1的反应,其中R为Me或4-MeC 6 H 4,CˆN为ppy(去质子化的
2-苯基吡啶)或bhq(去质子化的苯并-h) -
喹啉)与1,2-双[双(
五氟苯基)膦基]
乙烷(dfppe)进行了研究。当添加0.5当量的dfppe时,形成双核环
金属化的
PT(II)络合物[
PT 2 R 2(CˆN)2(μ-dfppe)] 2i - l,这是具有dfppe桥接的双
铂络合物的第一个实例。
配体。当
配体dfppe与配合物1反应时在1:1的比例,仅在R =我和CN = PPY,该复合物的情况下,[
PT(ME)(κ 1 -ppy)(κ 2 -dfppe)],4D,获得,其中,所述ppy
配体是单齿的,而dfppe是螯合的,在其他情况下,会形成二聚体2j - 1。使用密度泛函理论(DFT),将结果与其他二
膦配体,1,1-双(
二苯基膦基)
甲烷(dppm)和1,2-双(二