A novel catenarian cyano(triphenyl phosphite) copper(I) complex: Synthesis, crystal structure, thermal, voltammetric and spectral properties

Quantitative reaction between copper(I) cyanide and triphenyl phosphite forms copper(I) complex [(P(OPh)(3))(4)Cu-4(CN)(4)] (1). X-Ray crystal structure shows a catenarian polymer of tandem interconnected copper cyanide, with C and N connecting to proximal Cu atoms. The Cu atoms adopt two different conformations: one exhibits linear construction, while the other exhibits distorted tetrahedral geometry through coordinating to two cyano groups and the P donors of triphenyl phosphite molecules. The feature of 1 is the propagation pattern of two- and four-coordination along with the chain. IR and electronic absorption spectra also confirm the established single crystal structure. Thermal analysis indicates that 1 has a high thermal stability. 3-D fluorescence result shows the middle absorption peaks with the maximum excitement and emission wavelength 342 and 350 run, respectively. Cyclic voltammogram in DMSO, DMF and MeCN gives a midpoint voltage of -0.003, 0.061 and 0.137 V versus SCE, respectively, showing the different solvent virtue on reduction potential.