6,6′-(Perfluoropropane-2,2-diyl)bis(2,3-dihydrophthalazine-1,4-dione)-based coordination polymers and their sensing properties towards Cr2O72−

摘要: Through employing the hydrothermal in situ acylation of organic acids with N2H4, six L12−-based coordination polymers, [M(L1)(H2O)]·H2O (M2+ = Cd2+1, Zn2+2, Fe2+3, Mg2+4; H2L1 6,6′-(perfluoropropane-2,2-diyl)bis(2,3-dihydrophthalazine-1,4-dione)), [Pb(L1)] 5, and [Er2(L1)2(ox)(H2O)2]·5H2O (ox oxalate) 6, were obtained. X-ray single-crystal diffraction analysis reveals that (i) Cd2+, Zn2+, Fe2+ Mg2+ polymers are isostructural, they possess a 2D single-layer network structure 44 topology; (ii) 5 possesses 3D structure, which is constructed from dinuclear Pb2O812− clusters by L12− molecules; (iii) 6 double-layer structure. Two networks (the same as those 1–4) supported ox to form this network. 1D channels (428.9 A3 for total potential solvent-accessible void volume) observed 6. 1, 2, found emit blue light, corresponding L12−-centered electronic excitation. Based on photoluminescence properties, their sensing ability towards inorganic Cr2O72− anion was investigated. exhibits better Cr2O72−. The heavy-atom effect should play key role.