An Easily Accessible Chiral Carbodiphosphorane and its Coinage Metal Complexes

Herin, the high yielding synthesis of the chiral carbodiphosphorane ( 3 ) prepared in a two‐step procedure from commercially available ( R )‐BINAP (([1,1′‐binaphthalene]‐2,2′‐diyl)bis(diphenylphosphane), BINAP) and dibromomethane is presented. In the first reaction step, the bis phosphonium salt 1 [Br] 2 is obtained, which is subsequently deprotonated either with potassium hydroxide to yield the mono phosphonium salt 2 [Br], or with potassium hexamethyldisilazide to produce 3 . Moreover, coinage metal complexes of 3 were prepared via reaction with CuCl ( 4 Cu , 5 Cu , 6 Cu ), Cu(OTf)⋅toluene 0.5 ( 7 Cu ) or AuCl ⋅ (tht) ( 5 Au , 6 Au ). The prepared compounds were characterised by NMR‐ and IR‐spectroscopy, mass spectrometry, elemental analysis, single crystal X‐ray diffraction and UV/Vis spectroscopy. Photoluminescence emission spectra were obtained for most of the complexes ( 3 , 4 Cu , 5 Cu , 6 Cu and 6 Au ).