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Gold(I)-carbenes derived from 4-pyridylisocyanide complexes: supramolecular macrocycles supported by hydrogen bonds, and luminescent behavior

机译:从4-吡啶基异氰化物络合物衍生的金(I)-碳烯:氢键支持的超分子大环和发光行为

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摘要

Monomeric gold(I) carbenes of the type [AuR{C(NR1R2)(NHPy-(4))}] (Py-4 = 4-pyridyl) have been prepared with R = C6F5, Fmes (2,4,6- tris(trifluoromethyl)phenyl) by reaction of the corresponding isocyanide compounds [AuR(CNPy-4)] with primary or secondary amines. The single crystal X-ray diffraction structures of [Au(C6F5){C(NEt2)(NHPy-4)}]center dot OH2, [Au(Fmes){C(NEt2)(NHPy-4)}], and [Au(Fmes){C(NHMe)(NHPy-4)}] show that the presence of the NHPy-4 moiety formed induces the formation of supramolecular macrocycles only supported by hydrogen bond interactions, either with N-H groups of other molecules ( tetrameric macrocycles), or with water molecules ( dimeric macrocycles). Dimeric gold( I) carbenes were also produced using a diamine to form a bridging carbene, or using octafluorobiphenyl to form a Au-C6F4-C6F4-Au bridge, but the solid state structures of these dimers could not be solved. Most of the complexes herein described display luminescent properties.
机译:制备了[AuR {C(NR1R2)(NHPy-(4))}类型的单体金(I)卡宾酯(Py-4 = 4-吡啶基),R = C6F5,Fmes(2,4,6-通过相应的异氰化物化合物[AuR(CNPy-4)]与伯胺或仲胺反应生成三(三氟甲基)苯基。 [Au(C6F5){C(NEt2)(NHPy-4)}]中心点OH2,[Au(Fmes){C(NEt2)(NHPy-4)}]和[的单晶X射线衍射结构Au(Fmes){C(NHMe)(NHPy-4)}]显示形成的NHPy-4部分的存在诱导了仅由氢键相互作用支持的超分子大环的形成,或者与其他分子的NH基团(四聚体大环),或与水分子(二聚体大环化合物)结合使用。还使用二胺形成桥联卡宾或使用八氟联苯形成Au-C6F4-C6F4-Au桥生成二聚金(I)卡宾,但这些二聚体的固态结构无法解析。本文所述的大多数络合物显示发光性质。

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