The first hydroxyfluorooxoborate-nitrate, K5[B3O3F4(OH)]2(NO3), with a short ultraviolet cutoff edge and large birefringence was synthesized via the solution evaporation method.
N bonds
The calculated polarizability anisotropy, hyperpolarizability and HOMO–LUMO gap of optically active groups.
Recent progress and prospects of borate-based short-wavelength NLO crystals with modified boron-oxygen skeleton have been surveyed and analyzed focusing on the crystal structure features, cutoff edges, birefringence and SHG responses.
Based on a π-conjugated confinement strategy, we designed and synthesized a deep-UV NLO crystal, K2B3O3F4(OH), exhibiting a moderate birefringence (0.054@550 nm) and deep-UV transparency (<200 nm).
Herein, we demonstrated that selective organic–inorganic transformation is a simple but effective strategy to find new hydroxyfluorooxoborates. With this, Cs[B3O3F2(OH)2] with three-membered [B3O3F2(OH)2] clusters was synthesized.