Synthetic and Structural Studies of [AuCl3(NHC)] Complexes
Synthetic and Structural Studies of [AuCl3(NHC)] Complexes
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DOI：
10.1021/om900814e
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发表时间：
2010-01-25
期刊：
影响因子：
2.8
通讯作者：
Nolan, Steven P.
中科院分区：
文献类型：
--
作者：
Gaillard, Sylvain;Slawin, Alexandra M. Z.;Nolan, Steven P.
一系列N-杂环卡宾配合物[AuCl（NHC）] 1 [NHC：IPr，a; SIPr，B b; IPrMe，e; IPrCl，d; IMes，e; SIMes，f;，I 'Bu g; IAd，h;和ICy，i]与氯气或PhICl 2反应得到[AuCl 3（IPr）]，2a; [AuCl 3（SIPi）]，2B b; [AuCl 3（IPrMe）]，2c; [AuCl 3（IPrCl）]，2d; [AuCl 3（IMes）]，2 e;[AuCl 3（SIMes）]，2f; [AuCl 3（I'Bu）]，2g; [AuCl 3（IAd）]，2h;和[AuCl 3（ICy）]，2i。通过H-1和C-13 NMR光谱以及单晶X射线衍射进行了完整的表征，以辨别有机金（I/III）同系物之间的电子和结构差异。还计算了配合物[AuCl 3（NHC）] 2中NHC配体的掩埋体积，以评估NHC的空间位阻。这些数据允许与相关配合物[AuCl（NHC）] 1和[AuBr 3（NHC）]进行比较。
A series of N-heterocyclic carbene complexes [AuCl(NHC)] 1 [NHC: IPr, a; SIPr, b; IPrMe, e; IPrCl, d; IMes, e; SIMes, f; ,I'Bu g; IAd, h; and ICy, i] were reacted with chlorine gas or PhICl2 to afford [AuCl3(IPr)], 2a; [AuCl3(SIPi)], 2b; [AuCl3(IPrMe)], 2c; [AuCl3(IPrCl)], 2d; [AuCl3(IMes)], 2e; [AuCl3(SIMes)], 2f; [AuCl3(I'Bu)], 2g; [AuCl3(IAd)], 2h; and [AuCl3(ICy)], 2i, respectively. Complete characterization by H-1 and C-13 NMR spectroscopies as well its by single-crystal X-ray diffraction was performed in order to discern electronic and structural differences between organogold(I/III) congeners. Calculations of the buried volume of the NHC ligand in complexes [AuCl3(NHC)] 2 were also performed in order to evaluate the steric hindrance of the NHC. These data permit comparisons with the related complexes [AuCl(NHC)] 1 and [AuBr3(NHC)].