AAl(TeO) (A = Na, Ag) 和 KGa(HTeO)(HTeO)：具有大双折射和宽能隙的三种铝/镓碲酸盐。
AAl(TeO) (A = Na, Ag) and KGa(HTeO)(HTeO): Three Aluminum/Gallium Tellurites with Large Birefringence and Wide Band Gap.
机构信息
State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, P. R. China.
University of Chinese Academy of Sciences, Beijing 100049, P. R. China.
出版信息
Inorg Chem. 2023 Jun 5;62(22):8494-8499. doi: 10.1021/acs.inorgchem.3c01428. Epub 2023 May 24.
The exploration of novel inorganic tellurites is significant because of their promising applications in nonlinear-optical materials and birefringent materials. Herein, three new aluminum/gallium tellurites, namely, NaAl(TeO) (), AgAl(TeO) (), and KGa(HTeO)(HTeO) (), have been successfully obtained by mild hydrothermal reactions. The isostructural compounds and contain the TeO trimer, while compound contains an unprecedented TeO hexamer. Notably, all three compounds exhibit large birefringence values of over 0.1 at 532 nm, which are currently the largest reported birefringence values among tellurium(IV) oxides without additional anionic groups.
由于新型无机碲酸盐在非线性光学材料和双折射材料方面具有广阔的应用前景，因此对其进行探索具有重要意义。本文通过温和的水热反应成功合成了三种新型的铝/镓碲酸盐，分别为 NaAl(TeO) ()、AgAl(TeO) () 和 KGa(HTeO)(HTeO) ()。这三种同构化合物和 均包含 TeO3 三聚体，而化合物 则包含一个前所未有的 TeO6 六聚体。值得注意的是，这三种化合物在 532nm 处均表现出超过 0.1 的大双折射值，这是目前报道的不含额外阴离子基团的碲（IV）氧化物中最大的双折射值。
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