Synthesis, structure, luminescent properties, and photocatalytic behavior of 0D–3D silver(I) complexes bearing both diphosphine ligands and 1,10-phenanthroline derivatives.

Graphical abstract Reactions of diphosphine and diimine ligands with AgCF 3 SO 3 under different reaction conditions gave rise to six complexes with different structures. The representative one-dimensional coordination polymer {[Ag(dppe)(dmp)](CF 3 SO 3)·(CH 3 OH)·(H 2 O)} n exhibited good stability and excellent catalytic activity toward the photodegradation of a spectrum of common organic dyes in water under UV light irradiation. Abstract Six new silver(I) complexes with diphosphine ligands and 1,10-phenanthroline derivatives are named by [Ag 2 (dppe)(dicnq) 2 ](CF 3 SO 3) 2 (1), [Ag 2 (dppp) 2 (dicnq) 2 ](CF 3 SO 3) 2 (2), [Ag 2 (dppb) 2 (dicnq) 2 ](CF 3 SO 3) 2 (3), [Ag(DPEphos)(dicnq)]CF 3 SO 3 (4), {[Ag(dppe)(dmp)](CF 3 SO 3)·(CH 3 OH)·(H 2 O)} n (5), [Ag 2 (dppp) 2 (dmp) 2 ](CF 3 SO 3) 2 ·(H 2 O) (6), (dppe = 1,2-bis(diphenylphosphino)ethane, dppp = 1,3-bis(diphenylphosphino)propane, dppb = 1,4-bis(diphenylphosphino)butane, DPEphos = bis[2-(diphenylphosphanyl)phenyl]ether, dmp = 2,9-dimethyl-1,10-phenanthroline, dicnq = 6,7-dicyanodipyridoquinoxaline) were characterized by IR and X-ray diffraction. Further fluorescence spectroscopy, photocatalytic properties and terahertz time-domain spectra (THz-TDS) were performed on 2 – 6. Complexes 1 – 3 and 6 were binuclear, while 4 was mononuclear. Complex 5 was a coordination polymer, displaying a one-dimensional infinite chain. Moreover, complexes 1 , 2 and 4 were assembled via several pairs of C H⋯π interactions to 1D–3D supramolecular architectures. The emission peaks of the complexes 2 – 4 all exhibit a large degree of red shift, which may be tentatively attributed to the intraligand transition. Compounds 2 – 6 represented the first examples of Ag(I) complexes bearing both diphosphine and diimine ligands that exhibit high, efficient photocatalytic abilities for dye degradation under UV light and show good stability toward photocatalysis. [ABSTRACT FROM AUTHOR]