A facile synthesis for {cyclo‐(P₄tBu₃)}₂ (1) is reported making the phosphane available for follow‐up chemistry. Octaphosphane 1 reacts with [AuCl(tht)] (tht = tetrahydrothiophene) to give a monometallic {[AuCl(1‐κ²P²,P^4')], 2}, bimetallic {[(AuCl)₂(1‐κ²P²,P^4',κP^2')], 3} and trimetallic complex {[(AuCl)₃(1‐κ²P²,P^4',κP^2',κP⁴)], 4} in which up to four phosphorus atoms of the ligand are involved in coordination. In each of these complexes one gold(I) atom is chelated in an unusual distorted T‐shaped coordination mode which undergoes a rapid exchange between both donor atoms in solution. This mode of coordination in combination with the flexibility of the phosphane ligand moreover gives rise to an interesting dynamic behavior of the monometallic complex 2 which was elucidated by NMR spectroscopy, X‐ray crystallography and DFT calculations.

中文翻译：

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六叔丁基八膦的动态金（I）配合物

据报道，{环-（P ₄ t Bu ₃）} ₂（1）的合成简便，可将膦用于后续化学反应。Octaphosphane 1起反应以[AUCL（THT）]（THT =四氢噻吩）中，得到单金属{[AUCL（1个-κ ² P ²，P ^4'）]，2 }，双金属{[（AUCL）₂（1个-κ ² P ²，P ^4'，κ P ^2'）]，3 }和三金属络合物{[（AUCL）₃（1个-κ ² P ²，P ^4'，κ P ^2'，κ P ⁴）]，4 }其中，最多至配体的4个磷原子参与协调。在这些络合物的每一个中，一个金（I）原子都以不寻常的扭曲T形配位方式被螯合，该配位形式在溶液中的两个供体原子之间进行快速交换。此外，这种配位模式与膦配体的柔韧性相结合，引起了单金属配合物2有趣的动力学行为，这已通过NMR光谱，X射线晶体学和DFT计算得以阐明。