Na2B10O17 center dot H(2)en: a three-dimensional open-framework layered borate co-templated by inorganic cations and organic amines

A layered borate Na2B10O17 center dot H(2)en (1, en = ethylenediamine) with three-dimensional microporosity within the layers has been synthesized under solvothermal conditions by using organic amines and inorganic cations as the templates. Its framework displays a unique 5-connected net constructed by B5O11 cluster and emits blue luminescence.