[H₂dab][GaB₅O₁₀]: an Acentric Galloborate with a 4-Connected Uninodal Framework

Abstract

A new acentric galloborate (GBO) [H₂dab][GaB₅O₁₀] (1, 1,4-dab: 1,4-diaminobutane) has been synthesized under solvothermal conditions. The alternation of 4,4-connected GaO₄ and B₅O₁₀ cluster build up the 3D [GaB₅O₁₀] _n ²ⁿ⁻ uninodal framework, which contains three pairs of helical channels with 8-member ring (MR) and 7-MR apertures, respectively. Compound 1 exhibits a moderate second harmonic generation (SHG) response of 1.8 times that of KH₂PO₄ (KDP), indicating its potential application in UV regions. The acentric uninodal framework in compound 1 represents a new type of zeolitic framework in the GBOs’ family.

Keywords

Galloborate / Solvothermal synthesis / Nonlinear optics / Zeolitic framework

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