Construction of Rhodium(I) and Gold(I) Macrocycles by Transferring a Phosphine-Functionalized 4,5-Diazafluorenide Ligand from Its Copper(I) N-Heterocyclic Carbene Complex
作者:Runyu Tan、Frederick Sin Nang Chiu、Alen Hadzovic、Datong Song
DOI:10.1021/om200994b
日期:2012.3.26
6-diisopropylphenyl)imidazol-2-ylidene) [Cu(IPr)Lp] (2a), which exhibits a monomeric structure in solution but dimerizes in the solid state. Compound 2a reacts with Rh(PPh3)3Cl, [Rh(COD)Cl]2, Au(SMe2)Cl, and Au(IPr)Cl to form the macrocyclic complexes [Rh(PPh3)Lp]2 (2b), [Rh(COD)Lp]2 (2c), and [AuLp]2 (2d) and the mononuclear complex [Au(IPr)Lp] (2f), respectively, via ligand transfer. Although 2b–d
我们报告了膦官能化的4,5-二氮杂芴配体,9-(2-(二苯基膦基)乙基)-4,5-二氮杂芴(L p H)及其Cu(IPr)络合物(IPr = N,N′-双(2,6-二异丙基苯基)咪唑-2-亚丙基)[Cu(IPr)L p ](2a),其在溶液中显示单体结构,但在固态下二聚。化合物2a与Rh(PPh 3)3 Cl,[Rh(COD)Cl] 2,Au(SMe 2)Cl和Au(IPr)Cl反应形成大环配合物[Rh(PPh 3)L p ] 2(2b),[Rh(COD)L p ]2(2c),[AuL p ] 2(2d)和单核络合物[Au(IPr)L p ](2f)分别通过配体转移。尽管2b – d,f也可以直接由去质子化的配体L p –和相应的金属原料合成,但反应需要更长的时间,产率较低。L p H和Au(SMe 2)Cl之间的反应仅产生Au(L p H)2 Cl(2e)。