Ishikawa, Nobuo published the artcilePreparation and properties of alkali metal dialkyl(or -aryl)tetrafluorosilicates, Recommanded Product: Difluorodiphenylsilane, the publication is Nippon Kagaku Zasshi (1968), 89(7), 699-702, database is CAplus.
PhSiCl2(C6H4-Me-p), b6 152-4¡ã, was prepared from p-MeC6H4MgBr and PhSiCl3 in 60% yield. RR’SiCl2 was converted to RR’SiF2 (I) by heating with Na2SiF6. Thus, PhSiF2(C6H4Me-p), b11 130.5-1.5¡ã, was prepared in 70% yield. I and MF (where M is an alkali metal) in tetrahydrofuran, Me2CO, or MeCN stirred for 20 hrs. at room temperature gave alkali dialkyltetrafluorosilicate. Thus, K2[Ph2SiF4], Na2[Ph2SiF4], Cs2[Ph2SiF4], K2[MePhSiF4], Na2-[MePhSiF4], Cs2[MePhSiF4] and Cs2[Me2SiF4] were prepared These compounds are all hygroscopic substances, possess ir absorptions at approx. 1530 and approx. 1260 cm.-1 and decompose to R2SiF2 and MF on standing in the air. Thus, these complexes cannot be prepared in aqueous solution The rate of formation of C6H6 from Ph2SiF2 and PrNH3F or PhNH3F was measured and found to be faster with PrNH3F. The results are interpreted by assuming that complex formation is the rate-determining step and is dependent on the concentration of F-.
Nippon Kagaku Zasshi published new progress about 312-40-3. 312-40-3 belongs to catalysis-chemistry, auxiliary class Organic Silicones, name is Difluorodiphenylsilane, and the molecular formula is C12H10F2Si, Recommanded Product: Difluorodiphenylsilane.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia