Ambiphilic ligands featuring ortho-phenylene spacers

Ambiphilic ligands featuring ortho-phenylene spacers 

With the ort/io-phenylene linker, the formation of intramolecular P-B interaction is quasi-thermoneutral. As a consequence, the corresponding PBs retain their ambiphilic character whatever their ground-state structure (open, closed, or equilibrium between the two forms), and thus coordinate to transition metals with participation of both antagonist sites (see Section IV). 

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C. Ambiphilic ligands featuring ortho-phenylene spacers... 

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