AlB3O6(OH)·0.5(C2H10N2): An organically templated aluminoborate with hnb-layer structure

A novel organically templated aluminoborate, AlB3O6(OH)·0.5(C2H10N2) 1 was synthesized under hydrothermal conditions and structurally characterized by single crystal X-ray diffraction. Its aluminoborate architecture features the alternative connection of AlO3(OH) tetrahedra and B3O6 polyanions, giving rise to a sheet with hnb topology. Two adjacent antiparallel sheets sandwich H2en templates by hydrogen bonding interactions to produce a slab block (en = ethylenediamine). These slab blocks are stacked in a −AAAA-sequence and further cohered entirely by relatively weak van der Waals interactions to form its entire structure. Further characterizations for 1 are accomplished by IR, element analysis, and thermal analysis.