Syntheses, crystal structures and luminescent properties of two silver complexes of N,N,N′,N′-tetra(diphenylphosphanylmethyl)ethylene diamine

Treatment of a suspension of AgNO3 and AgCl in MeOH with a solution of N,N,N′,N′-tetra(diphenylphosphanylmethyl)ethylene diamine (dppeda) in CHCl3 afforded a binuclear complex [Ag2(dppeda)Cl](NO3)·2MeOH (1). The analogous reactions using AgSCN and dppeda in EtOH/CH2Cl2 gave rise to a polymeric complex [Ag2(dppeda)(SCN)2]n (2). Both compounds were fully characterized by elemental analyses, IR spectra, 1H(31P) NMR, and single-crystal X-ray crystallography. The cation of 1 shows an interesting molecular basket framework in which dppeda adopts a side-by-side coordination mode. Compound 2 possesses an unique 2D (6,3) layer network with 34-membered metallomacrocycles in which dppeda takes a end-to-end coordination mode. The 2D topological framework of 2 is rare in the chemistry of tetraphosphines. The photoluminescent properties of 1 and 2 in solid state at ambient temperature were investigated.

The reaction of AgNO3 and AgCl or AgSCN with N,N,N′,N′-tetra(diphenylphosphanylmethyl)ethylene diamine (dppeda) resulted in the formation of basket-like complex [Ag2(dppeda)Cl](NO3)·2MeOH and an unique 2D polymeric complex [Ag2(dppeda)(SCN)2]n. Both compounds were fully characterized by elemental analysis, IR, UV–Vis, 1H NMR and X-ray crystallography and their photoluminescent properties of clusters were investigated.Figure optionsDownload as PowerPoint slide