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

• Wei-Wei Fan^a, 
• Zhong-Feng Li^a, 
• Jiao-Bao Li^a, 
• Yu-Ping Yang^b, 
• Yuan Yuan^a, 
• Han-Qin Tang^a,
• Ling-Xiao Gao^a, 
• Qiong-Hua Jin^a, , , 
• Zhen-Wei Zhang^c, 
• Cun-Lin Zhang^c

• ^a Department of Chemistry, Capital Normal University, Beijing 100048, PR China
• ^b School of Science, Minzu University of China, Beijing 100081, PR China
• ^c Beijing Key Laboratory for Terahertz Spectroscopy and Imaging, Key Laboratory of Terahertz Optoelectronics, Ministry of Education, Department of Physics, Capital Normal University, Beijing 100048, PR China

http://www.sciencedirect.com/science/article/pii/S0022286015300909

The reactions of copper(I) salts CuX [X = Cl, OTf (OTf = CF₃SO₃) and ClO₄] and bis(diphenylphosphino)methane (dppm) with 4,4-bipyridine (4,4-bipy), 2,2-bipyridine (2,2-bipy), isoquinoline (i-C₉H₇N) and 1,10-phenanthroline (phen) lead to five new copper(I) complexes: [CuCl(dppm)(i-C₉H₇N)]₂ (1), {[CuCl(dppm)(phen)]₂•5H₂O}_n (2), [Cu₂Cl₂(dppm)₂(4,4-bipy)]•4CH₃CN (3), [Cu(dppm)(2,2-bipy)]₂(OTf)₂ (4), {[Cu₂Cl(dppm)₂(4,4-bipy)](ClO₄)}_n (5). Complexes 1, 3 and 4 are of dinuclear structure with eight-membered Cu₂P₄C₂ 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.