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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Synthesis and characterisation of Pd(II) and Au(I) complexes with mesoionic carbene ligands bearing phosphinoferrocene substituents and isomeric carbene moieites
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Synthesis and characterisation of Pd(II) and Au(I) complexes with mesoionic carbene ligands bearing phosphinoferrocene substituents and isomeric carbene moieites

机译：具有含有磷素取代基和异构Carbene Moieites的Mesoionic Carbene配体的Pd（II）和Au（I）配合物的合成与表征

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摘要

While numerous functional ligands combining phosphine and imidazole-2-ylidene (or imidazolin-2-ylidene) donor moieties have already been reported, the chemistry of the corresponding functional mesoionic carbenes (MIC) derived from 1,2,3-triazoles remains nearly untapped. This contribution describes the synthesis of two isomeric series of triazolium salts bearing 1'-(diphenylphosphino)ferrocenyl substituents by [3 + 2] cycloaddition of a P-protected phosphinoferrocene alkyne with azides, or alternatively of a P-protected phosphinoferrocene azide with terminal alkynes, and by subsequent methylation. These salts were used to synthesize structurally unique Pd(II) complexes featuring a P,C-chelating triazolylidene carbene ligands and Au(I)-MIC complexes with free phosphine groups. The latter were further utilised to prepare Pd(II)Au(I) heterometallic complexes containing bridging ferrocene phosphino-carbenes as structurally flexible, donor-unsymmetric metalloligands. In addition, the reactivity of the newly prepared, P-protected phosphinoferrocene alkyne Ph(2)PfcCuCH center dot BH3 (fc = ferrocene-1,1'-diyl) was investigated, and representatives from all reported compound classes were structurally characterised.
机译：虽然已经报道了组合磷酸和咪唑-2- ylidene（或咪唑啉-2- ylidene）供体部分的许多官能配体，但是衍生自1,2,3-三唑的相应功能性含有碳化合物（MIC）的化学仍然尚未开发。该贡献描述了通过叠氮化物的[3 + 2]环加入的[3 + 2]环加成的双异构盐含有1' - （二苯基膦基）二茂铁取代基的两种异构盐系列的合成，或者用丙烯酸酯，或者将P型膦酮烯叠氮化芳烃与炔烃末端进行，随后的甲基化。这些盐用于合成具有与游离膦基团的P，C螯合三唑基甲苯配体和Au（i）-MiC复合物的结构唯一独特的Pd（II）络合物。后者进一步用于制备含有桥接铁茂膦 - 碳糖的Pd（II）的Au（i）差异络合物，如结构柔性的供体 - 非对称金属糖苷剂。此外，研究了新制备的P-保护膦膦烯酮炔烃（2）PFCCUCH中心点BH3（FC =二茂铁-1,1'-二基）的反应性，并在结构表征所有报道的复合类别的代表。

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