Synthesis, structures, and properties of two magnesium silicate fluorides Mg₅(SiO₄)₂F₂and Mg₃SiO₄F₂

Abstract

The structural differences of title compounds were investigated, and the related physical properties and theoretical calculations were also reported.

A new barium-containing alkali metal silicate fluoride NaBa3Si2O7F with deep-UV optical property

“…S6 , it can be attributed to the rocking vibration of the [SiO 4 ] tetrahedra. The assignments are consistent with those previously reported [19,[72][73]. The results of the IR spectroscopic measurement are consistent with the analysis of crystal structure which verifies the correctness of the structure, concurrently.…”

Synthesis, Structure, and Properties of Nonlinear Optical Crystal Na2SiF6

“…For example, the introduction of large electronegative fluorine atoms can exhibit short transmission cutoff wavelengths in the ultraviolet (UV) region, such as M 3 B 6 O 11 F 2 ( M = Ba, Sr), K 3 Ba 3 Li 2 Al 4 B 6 O 20 F, Rb 3 Al 3 B 3 O 10 F, K 2 Pb 3 (CO 3 ) 3 F 2 , KSrCO 3 F, RbMgCO 3 F, LiB 6 O 9 F, Li 2 B 6 O 9 F 2 , and Li 2 B 3 O 4 F 3 , etc, are all examples of success. Since the interesting structural chemistry and high performances in practical applications, silicate materials have attracted scientists, Y 2 SiO 5 (YSO), Cs 2 B 4 SiO 9 , α‐SiO 2 , LiGd 9 (SiO 4 ) 6 O 2 , Mg 5 (SiO 4 ) 2 F 2 , and Mg 3 SiO 4 F 2 were found to be good materials. Especially, Cs 2 B 4 SiO 9 has large powder SHG response (about 4.6 times of KDP) and short deep‐UV cutoff edge (below 190 nm).…”

Mg2Pb2Si2O7F2: a new lead-containing alkali earth metal silicate fluoride with a short cutoff edge

“…The rapid development of medical equipment, high technology, and manufacturing generally relies on the continuous breaking of the shackles of traditional materials; 1–3 hence, it is essential to explore new compounds and enrich structural chemistry. The π-conjugated systems, such as [BO 2 ], [BO 3 ], [NO 3 ], [CO 3 ], [C 3 N 3 O 3 ], etc.…”