Synthesis, structure, terahertz spectroscopy and luminescent properties of copper (I) complexes with bis(diphenylphosphino)methane and N-donor ligands

Abstract The reactions of copper(I) salts CuX [X = Cl, OTf (OTf = CF 3 SO 3 ) and ClO 4 ] and bis(diphenylphosphino)methane (dppm) with 4,4-bipyridine (4,4-bipy), 2,2-bipyridine (2,2-bipy), isoquinoline (i-C 9 H 7 N) and 1,10-phenanthroline (phen) lead to five new copper(I) complexes: [CuCl(dppm)(i-C 9 H 7 N)] 2 ( 1 ), {[CuCl(dppm)(phen)] 2 •5H 2 O} n ( 2 ), [Cu 2 Cl 2 (dppm) 2 (4,4-bipy)]•4CH 3 CN ( 3 ), [Cu(dppm)(2,2-bipy)] 2 (OTf) 2 ( 4 ), {[Cu 2 Cl(dppm) 2 (4,4-bipy)](ClO 4 )} n ( 5 ). Complexes 1 , 3 and 4 are of dinuclear structure with eight-membered Cu 2 P 4 C 2 rings. The structure of compound 2 can be simplified as three-dimensional topology. Complex 5 is of infinite chain structure linked by 4,4-bipy. All these complexes are characterized by IR, elemental analyses, single-crystal X-ray diffraction analysis, luminescence, NMR and terahertz time-domain spectroscopy.