The coordination characteristics and donor/acceptor properties of a series of 2-pyridyl substituted phosphine ligands have been investigated using structural, spectroscopic and DFT calculational studies. A range of different coordination modes are observed in Mo and W carbonyl complexes of tris-2-pyridyl-phosphine ligands of the type P(2-py') (2-py' = substituted or unsubstituted 2-pyridyl group), including an unprecedented example exhibiting N,N',μ2-π coordination. DFT calculations were used to assess the relative donor/acceptor properties of a range of related 2-pyridyl-phosphine ligands with respect to PPh3 and PtBu3.

中文翻译：

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Tris-2-吡啶基膦配体的配位和配体性质的实验和理论研究。

使用结构，光谱和DFT计算研究方法研究了一系列2-吡啶基取代的膦配体的配位特征和给体/受体性质。在类型P（2-py'）（2-py'=取代或未取代的2-吡啶基）的三-2-吡啶基-膦配体的Mo和W羰基配合物中观察到一系列不同的配位模式N，N'，μ2-π配位的前所未有的例子。使用DFT计算来评估一系列相关的2-吡啶基膦配体相对于PPh3和PtBu3的相对供体/受体特性。