Biphospholes properties

It is noteworthy that the P atoms of these phosphole oligomers retain the versatile reactivity observed with monophospholes [7]. In particular, biphosphole 9 exhibits a rich coordination chemistry, which allows for the preparation of a variety of neutral and cationic transition metal complexes (Scheme 4.5) [18a,b, 22]. These have been used as precursors for homogeneous catalysts [22] however, their photophysical properties have not been studied. 

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