The synthesis, structure and luminescence of two 1D pyrazine-connected Cu(I)-dppm polymers

摘要

Two pyrazine-connected 1D copper(I) dppm polymers, ([Cu_3(dppm)_3Br_2][Cu_2(dppm)(pyz)Br_21 Br (CH_3OH)_2)_n(1)and([Cu_2(dppm)_2(NO_3)_2(pyz)](pyz))_n(2)(dppm = bis(diphenylphosphino)methane, pyz = pyrazine) have been synthesized and characterized by X-ray crystallography, luminescence, IR, ~1H, and ~(31)P NMR. Structure analysis shows that complex 1 is a neutral 1D polymer in sine-curve-like form, while complex 2 is in linear form. And photoluminescent study of them shows that they exhibit fluorescent emission bands at ca. 434 nm and 1 nm, respectively.