title: Series of open-framework aluminoborates containing [B5O10] clusters.
abstract: Three new open-framework aluminoborates (ABOs), Rb2AlB5O10·4H2O (), [C5N2H16]AlB5O10 (, C5N2H16 = N-ethyl-1,3-diaminopropane) and [H2dap][(CH3)2NH]AlB5O10 (, dap = 1,2-diaminopropane) have been made under solvothermal conditions and characterized by elemental analysis, IR, TGA, UV-vis, powder XRD, single-crystal XRD, fluorescence spectra and NLO determination, respectively. These three ABOs display two structural types: and are isostructural and crystallize in acentric space groups C2221 and P212121 respectively, showing intersecting helical channels and good NLO properties; while, crystallizes in the centrosymmetric space group Pbca and has CrB4 topology, exhibiting intersecting 8-, 11- and 14-ring channels. UV-vis spectral investigation indicates that they are wide-band-gap semiconductors.
authors.affiliation: MOE Key Laboratory of Cluster Science, Beijing Key Laboratory of Photoelectric/Electrophotonic Conversion Materials, School of Chemistry, Beijing Institute of Technology, Beijing 100081, China. ygy@bit.edu.cn.
authors.forename: Li
authors.initials: L
authors.lastname: Wei
authors.forename: Guo-Ming
authors.initials: GM
authors.lastname: Wang
authors.forename: Huan
authors.initials: H
authors.lastname: He
authors.forename: Bai-Feng
authors.initials: BF
authors.lastname: Yang
authors.forename: Guo-Yu
authors.initials: GY
authors.lastname: Yang