title: A novel 3D Cu(I) coordination polymer based on Cu6Br2 and Cu2(CN)2 SBUs: in situ ligand formation and use as a naked-eye colorimetric sensor for NB and 2-NT.
abstract: A novel coordination polymer with the chemical formula [Cu4Br(CN)(mtz)2]n (mtz = 5-methyl tetrazole) (), has been synthesized under solvothermal conditions and characterized by elemental analysis, infrared (IR) spectroscopy, thermal gravimetric analysis, powder X-ray diffraction and single-crystal X-ray diffraction. Interestingly, the Cu(i), CN(-) and mtz(-) in compound are all generated from an in situ translation of the original precursors: Cu(2+), acetonitrile and 1-methyl-5-mercapto-1,2,3,4-tetrazole (Hmnt). The in situ ring-to-ring conversion of Hmnt into mtz(-) was found for the first time. Structural analysis reveals that compound is a novel 3D tetrazole-based Cu(i) coordination polymer, containing both metal halide cluster Cu6Br2 and metal pseudohalide cluster Cu2(CN)2 secondary building units (SBUs), which shows an unprecedented (3,6,10)-connected topology. Notably, a pseudo-porphyrin structure with 16-membered rings constructed by four mtz(-) anions and four copper(i) ions was observed in compound . The fluorescence properties of compound were investigated in the solid state and in various solvent emulsions, the results show that compound is a highly sensitive naked-eye colorimetric sensor for NB and 2-NT (NB = nitrobenzene and 2-NT = 2-nitrotoluene).
authors.affiliation: Department of Chemistry, North University of China, Taiyuan, Shanxi 030051, P.R. China. jfsong0129@gmail.com.
authors.forename: Jiang-Feng
authors.initials: JF
authors.lastname: Song
authors.affiliation: Department of Chemistry, North University of China, Taiyuan, Shanxi 030051, P.R. China. jfsong0129@gmail.com.
authors.forename: Yang
authors.initials: Y
authors.lastname: Li
authors.affiliation: Department of Chemistry, North University of China, Taiyuan, Shanxi 030051, P.R. China. jfsong0129@gmail.com.
authors.forename: Rui-Sha
authors.initials: RS
authors.lastname: Zhou
authors.affiliation: Department of Chemistry, North University of China, Taiyuan, Shanxi 030051, P.R. China. jfsong0129@gmail.com.
authors.forename: Tuo-Ping
authors.initials: TP
authors.lastname: Hu
authors.affiliation: Department of Chemistry, North University of China, Taiyuan, Shanxi 030051, P.R. China. jfsong0129@gmail.com.
authors.forename: Yan-Liang
authors.initials: YL
authors.lastname: Wen
authors.affiliation: Department of Chemistry, North University of China, Taiyuan, Shanxi 030051, P.R. China. jfsong0129@gmail.com.
authors.forename: Jia
authors.initials: J
authors.lastname: Shao
authors.affiliation: College of Chemistry and State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun, Jilin 130023, China. cuixb@mail.jlu.edu.cn.
authors.forename: Xiao-Bing
authors.initials: XB
authors.lastname: Cui