Three diphosphates, α-Li2Na2P2O7, Li8Pb3Ba(P2O7)4 and Li7Rb(P2O7)2: influences of co-substitution on the crystal structure

被引：6
|
作者：
Wen, Ming [1 ]
Hu, Cong [2 ]
Wu, Hongping [2 ]
Yang, Zhihua [2 ]
Wu, Xiaohong [1 ]
Pan, Shilie [1 ,2 ]
机构：
[1] Harbin Inst Technol, Sch Chem & Chem Engn, Harbin 150001, Heilongjiang, Peoples R China
[2] Chinese Acad Sci, CAS Key Lab Funct Mat & Devices Special Environm, Xinjiang Tech Inst Phys & Chem, Xinjiang Key Lab Elect Informat Mat & Devices, 40-1 South Beijing Rd, Urumqi 830011, Peoples R China
来源：
DALTON TRANSACTIONS | 2020年 / 49卷 / 20期
基金：
对外科技合作项目（国际科技项目）; 中国国家自然科学基金;
关键词：
NONLINEAR-OPTICAL MATERIAL; 2ND-HARMONIC GENERATION; LUMINESCENT PROPERTIES; PHOSPHATES; WATER; NA;
D O I：
10.1039/d0dt01070g
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Three diphosphates, alpha-Li2Na2P2O7, Li8Pb3Ba(P2O7)(4) and Li7Rb(P2O7)(2), were synthesized via a high-temperature solution method. alpha-Li2Na2P2O7 crystallized into a non-centrosymmetric space group Ama2, while Li8Pb3Ba(P2O7)(4) and Li7Rb(P2O7)(2) crystallized into the centrosymmetric space groups C2/c and P1respectively. alpha-Li2Na2P2O7, Li8Pb3Ba(P2O7)(4) and Li7Rb(P2O7)(2) could be obtained by co-substitution from each other. Also, we found that the high valence state and small atomic radius of the substituted cations resulted in a larger cation-cation distance, which led to a lower dimension of the structure. Li2Na2P2O7 possessed two phases, namely, alpha- and beta-Li2Na2P2O7, and their second harmonic generation (SHG) responses were compared. We also reported the syntheses, IR spectra, UV-vis-NIR diffuse reflectance spectroscopy data, thermal properties and first principles calculations of the title compounds.
引用
收藏
页码：6744 / 6750
页数：7
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