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Syntheses, structures and characterization of noncentrosymmetric MZnPO4 (M = K, NH4)
Dalton Transactions ( IF 3.5 ) Pub Date : 2024-11-07 , DOI: 10.1039/d4dt02530j
Jiawei Zhao, Wei Wei, Meihui Chen, Yanna Chen, Donghai An

Two phosphates, KZnPO4 and NH4ZnPO4, were successfully synthesized using a solid-state reaction method and characterized via single-crystal X-ray diffraction. Both of their structures feature a three-way skeleton composed of isolated PO4 and ZnO4 tetrahedra, with K+/NH4+ cations occupying the spaces within the frameworks to balance charges. These compounds are isostructural and crystallize in the noncentrosymmetric P63 space group. Their structures were compared, revealing that non-centrosymmetric (NCS) KZnPO4 and NH4ZnPO4 exhibit second harmonic generation (SHG) responses of 0.4 × KDP and 1 × KDP, respectively. Furthermore, by combining the electronic structure and SHG density calculations, we examined the effects of ZnO4 tetrahedra on the SHG response of KZnPO4 and NH4ZnPO4.

中文翻译:


非中心对称 MZnPO4 (M = K, NH4) 的合成、结构和表征



采用固相反应方法成功合成了 KZnPO4 和 NH4ZnPO4 两种磷酸盐,并通过单晶 X 射线衍射进行了表征。它们的两种结构都具有由孤立的 PO4 和 ZnO4 四面体组成的三向骨架,其中 K+/NH4+ 阳离子占据框架内的空间以平衡电荷。这些化合物是同构的,并在非中心对称的 P63 空间群中结晶。对它们的结构进行了比较,发现非中心对称 (NCS) KZnPO4 和 NH4ZnPO4 分别表现出 0.4 × KDP 和 1 × KDP 的二次谐波产生 (SHG) 响应。此外,通过结合电子结构和 SHG 密度计算,我们研究了 ZnO4 四面体对 KZnPO4 和 NH4ZnPO4 的 SHG 响应的影响。
更新日期:2024-11-07
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