Reversible Solid-State Phase Transitions between Au-P Complexes Accompanied by Switchable Fluorescence.

Six complexes {(3-bdppmapy)(AuCl)} (-; 3-bdppmapy = ,'-bis(diphenylphosphanylmethyl)-3-aminopyridine and tht = tetrahydrothiophene) were simultaneously formed by the reaction of Au(tht)Cl and 3-bdppmapy in CHCl followed by infusion with hexane. Complexes - could be produced independently by volatilizing solvent in air, solid-state heating, or solvothermal reaction. The PPh-Au-Cl moieties extended in different directions, forming Au-Au and Au-Au-Au interactions.