From β‐Na2B6O10 to Na3AlB8O15 and Na3Al2B7O15: Structural Tuning of Anionic‐Group Architectures by Substitution of [BO4] by [AlO4] Covalent Tetrahedra

Autor:	Jiao, Jiahao, Jin, Wenqi, Zhang, Min, Guo, Zhiyong, Yang, Zhihua, Pan, Shilie
Předmět:	SPACE groups ELECTRONIC band structure BORAX TETRAHEDRA BIREFRINGENCE
Zdroj:	Chemistry - A European Journal; 1/19/2022, Vol. 28 Issue 4, p1-6, 6p
Abstrakt:	Two new sodium aluminum borates, Na3AlB8O15 and Na3Al2B7O15, have been successfully synthesized by the high‐temperature solution method. They crystallize in the different space groups, P21/c and P2/c, respectively. The B−O configurations of β‐Na2B6O10, Na3AlB8O15 and Na3Al2B7O15 are compared to feature complicated different dimensional open‐framework structures caused by the substitution of [BO4] by [AlO4] covalent tetrahedra. Moreover, the experimental results indicate that Na3AlB8O15 and Na3Al2B7O15 have short ultraviolet (UV) cutoff edges (<187 nm). The first‐principles calculations show that Na3AlB8O15 and Na3Al2B7O15 have moderate birefringence (0.075 and 0.041@1064 nm, respectively). [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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