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 Ph2PfcC[triple bond, length as m-dash]CH·BH3 (fc = ferrocene-1,1'-diyl) was investigated, and representatives from all reported compound classes were structurally characterised.

中文翻译：

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Pd（ii）和Au（i）配合物的合成和表征，其中带有带有膦二茂铁取代基和同分异构卡宾分子的中离子卡宾配体。

虽然已经报道了结合膦和咪唑-2-亚甲基（或咪唑啉-2-亚甲基）供体部分的众多功能性配体，但衍生自1,2,3-三唑的相应功能性中离子碳烯（MIC）的化学性质仍未开发。该贡献描述了通过[3 + 2]环合一个P保护的膦二茂铁炔与叠氮化物，或者一个P保护的膦二茂铁叠氮与末端炔的[3 + 2]环加成，合成两个带有1'-（二苯基膦基）二茂铁基取代基的三唑鎓盐的异构体系列。 ，以及随后的甲基化。这些盐用于合成结构独特的Pd（ii）配合物，这些配合物具有P，C螯合的三唑亚基卡宾配体和带有游离膦基的Au（i）-MIC配合物。后者被进一步用于制备Pd（ii）Au（i）杂金属配合物，该配合物含有架桥二茂铁膦-卡宾作为结构柔性，供体不对称的金属配体。此外，还研究了新制备的P保护的膦基二茂铁二炔Ph2PfcC [三键，长度为m-CH·BH3（fc =二茂铁-1,1'-二基）的反应性，并报道了所有化合物的代表类的结构特征。