A hydrogen-bonded inorganic-organic network with noncentrosymmetric structure exhibiting second-order nonlinear optical response

作者：Chen, Zi-Xuan; Wang, Yu-Ling; Liu, Qing-Yan^*

来源：Inorganic Chemistry Communications, 2018, 98: 150-153.

DOI：10.1016/j.inoche.2018.10.022

• Inorganic-organic compound
• di(pyridine-4-yl)amine
• Hexafluorosilicate
• Second-harmonic-generation

An inorganic-organic hybrid compound (H(2)DPA)(2)(SiF6) (1) constructed from the di(pyridine-4-yflamine (DPA) ligands and octahedral SiF62- anions was presented. The protonated H(2)DPA cations and SiF62- anions are linked by the N-H center dot center dot center dot F hydrogen bonds to give a one-dimensional (1D) helical chain, which is further linked by the N-H center dot center dot center dot F hydrogen bonds to generate a three-dimensional (3D) framework featuring helical chains. Compound 1 crystallizes in an acentric space group and exhibits a phase-matchable second-harmonic-generation (SHG) response of 1.4 times that of potassium dihydrogen phosphate (1.4 x KDP). The nonlinear organic ligand with inherent dipole and the distorted [SiF6] octahedra, as well as the helical chains in a parallel packing mode contribute the SHG activity for 1.

• 出版日期2018-12
• 单位江西师范大学