Homo- and Heteropolynuclear Complexes Containing Bidentate Bridging 4-Phosphino-N-Heterocyclic Carbene Ligands
作者:Zeyu Han、Joshua I. Bates、Dominik Strehl、Brian O. Patrick、Derek P. Gates
DOI:10.1021/acs.inorgchem.6b00686
日期:2016.5.16
functionality at the backbone of an NHC. The 4-phosphino-substituted NHC (1a) derived from 1,3-dimesitylimidazol-2-ylidene (IMes) and MesP═CPh2 is shown to be an effective bifunctional ligand for Au(I) and Pd(II). Several new complexes are reported: 2a: 1a·AuCCl, 3a: 1a·(AuCl)2, 4a: [(1a)2AuC]Cl, 5a: [(1a·AuPCl)2AuC]Cl], and 6a: 1a·(PdC) (AuPCl). The reaction of 4-phosphino-NHC 1b, derived from 1,3-di(cyclo
磷烯烃与N-杂环卡宾(NHC)的异常反应提供了一种方便的方法,可在NHC的骨架上引入新的功能。衍生自1,3-二甲并咪唑-2-亚甲基(IMes)和MesP═CPh2的4-膦基取代的NHC(1a)是Au(I)和Pd(II)的有效双功能配体。几种新的复合物被报道:2A:1A ·金Ç氯,图3a:1A ·(AUCL)2,图4a:[(1A)2的Au Ç ]氯,5A:[(1A ·金P Cl)的2Au C ] Cl],和6a:1a ·(Pd C)(Au P Cl)。1,3-二(环己基)咪唑-2-亚甲基(ICy)和MesP═C(4-C 6 H 4 F)2衍生的4-膦基-NHC 1b与(tht)AuCl(2)的反应相当于四氢噻吩),得到了令人着迷的四核5b [(1b ·Au P Cl)2 Au C ] [AuCl 2 ]。5b的分子结构具有双(碳烯)金(I)阳离子和二氯金酸酯(I)阴离子之间紧密的Au···Au接触(3
Abnormal Reactivity of an N-Heterocyclic Carbene (NHC) with a Phosphaalkene: A Route to a 4-Phosphino-Substituted NHC
作者:Joshuaâ I. Bates、Pierre Kennepohl、Derekâ P. Gates
DOI:10.1002/anie.200905401
日期:2009.12.21
A naughty NHC: A stable N‐heterocyclic carbene (NHC) reacts with a phosphaalkene not at the expected 2‐position, but through the 4‐position, which leads to an unprecedented 4‐phosphino‐substituted NHC that functions as a novel bifunctional ligand for gold(I). The mechanism of this reaction has been investigated using density functional calculations.
4-Phosphino-Substituted N-Heterocyclic Carbenes (NHCs) from the Abnormal Reaction of NHCs with Phosphaalkenes
作者:Joshua I. Bates、Derek P. Gates
DOI:10.1021/om3003174
日期:2012.6.25
The activation of the P═C bond of phosphaalkenes with N-heterocycliccarbenes (NHCs) offers a convenient means to introduce new functionality at the 4-position of an NHC. Treatment of MesP═CRR′ (2a: R = R′ = Ph; 2b: R = Ph, R′ = 2-C5H4N; 2c: R = R′ = 4-C6H4F) with 1,3-dimesitylimidazol-2-ylidene [:C(NMesCH)2, IMes, Mes = 2,4,6-Me3C6H2] affords 4-phosphino-2-carbenes :C(NMes)2CHC(PMesCHRR′)NMes [1a: