The reaction of 1,3‐dimercaptobenzene with iPr₂PCl in the presence of the base NaH, furnishes the symmetric ligand [C₆H₄‐1,3‐(SPiPr₂)₂] (1a). The direct reaction of this ligand as well as of the literature‐known nonsymmetric ligand [C₆H₄‐1‐(SPiPr₂)‐3‐(OPiPr₂)] (1b) with NiCl₂ affords the symmetric bis(thiophosphinito) PSCSP pincer complex [{C₆H₃‐2,6‐(SPiPr₂)₂}NiCl] (2a) as well as the phosphinito–thiophosphinito POCSP pincer complex [{C₆H₃‐2‐(SPiPr₂)‐6‐(OPiPr₂)}NiCl] (2b). Both complexes were fully characterised and their catalytic performance in Kumada coupling of aryl halides and p‐tolylmagnesium bromide under mild conditions was evaluated.

中文翻译：

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对称和不对称NiII硫代膦酰基PECSP（E = S，O）钳形配合物的合成及其在温和条件下的Kumada偶联中的应用

1,3-二巯基苯的与反应我镨₂的PCl在基座NaH存在下，配料对称配位体[C ₆ H ^ ₄ -1,3-（SP我镨₂）₂ ]（1A）。该配体以及文献中已知的非对称配体[C ₆ H ₄ -1-（SP i Pr ₂）-3-（OP i Pr ₂）]（1b）与NiCl ₂的直接反应可得到对称的（硫代膦酰基）PSCSP钳形复合物[{C ₆ H ₃ -2,6-（SP iPr ₂）₂ } NiCl]（2a）以及膦酰-硫代膦酰POCSP夹杂物[{C ₆ H ₃ -2-（SP i Pr ₂）-6-（OP i Pr ₂）} NiCl]（2b） 。两种配合物均得到了充分表征，并评估了它们在温和条件下在芳基卤化物和对甲苯甲酸溴化物的Kumada偶联中的催化性能。