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Eight silver(I) complexes containing DPEphos (bis[2-(diphenylphosphino)phenyl]ether) and dppe (bis (diphenylphosphino)ethane), namely [Ag2Cl2(DPEphos)(2)(dppe)](CH3OH)(2)(DMF) (1), [Ag2Br2(DPEphos)(2)] (DMF)(2) (2), [AB(2)(OTf)(2)(DPEphos)(2)(dPPe)] (3) (OTf = trifluoromethanesulfonate), [Ag-2(NO3)(2)(DPEphos)(2) (dppe)] (4), [Ag(DPEphos)(dppe)](OTf) (5), [Ag(NO3)(DPEphos)] (6), [Ag(NO2)(DPEphos)] (7) and [Ag(DPEphos)(dppe)](BF4) (8), have been synthesized. They were characterized by IR spectroscopy, X-ray diffraction, RT luminescence, H-1 and P-31 NMR spectroscopy. Complexes 5-8 were obtained in the mixed solvents of CH3OH and CH2Cl2, while 1-4 were obtained in the mixed solvents of CH3OH, CH2Cl2 and DMF (DMF = N,N-dimethylformamide). Complexes 1-4 display dinuclear structures, in which two silver atoms are bridged by one dppe ligand (for 1,3 and 4) or two Br atoms (for 2). The other four are mononuclear complexes. The P-31 NMR spectra of the title compounds are measured, each spectrum shows rich signals which belong to P atoms in different chemical environment. In the P-31 NMR spectra, there exist splitting signals (doublets or triplets) which can be attributed to the coupling of the Ag-107,Ag-109-P-31 or F-19-P-31, where the coupling of F-19-P-31 was found for the first time in silver(I)-P complexes containing OTf- or BF4- anions. (C) 2014 Elsevier Ltd. All rights reserved.
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