Walter, Simone published the artcileSynthesis of unsymmetrical trisilylamines with rotational barriers, Formula: C12H10F2Si, the publication is Zeitschrift fuer Naturforschung, B: Chemical Sciences (1991), 46(9), 1149-60, database is CAplus.
Bis- and tris(fluorosilyl)amines with bulky groups are prepared in the reaction of lithiated di-tert-butylfluorosilylamine with fluorosilanes. Tris(fluorosilyl)amines with 3 different silyl groups could be synthesized stepwise in these reactions. In all tris(fluorosilyl)amines a rotational barrier is observed by NMR spectroscopy at room temperature The compounds (Me3C)2SiFN(SiFRR1) (R = R1 = Me; R = F, R1 = CMe) and (Me3C)2SiFN(SiFR2)SiF2R1 [I; R = CMe3, R1 = CMe3, Ph (II)] show only one structural isomer, whereas the compounds I [R = CMe3, R1 = F (III); R = CHMe2, R1 = Ph; R = Ph, R1 = Me] show 2 structural isomers. The crystal structures of II and III were determined
Zeitschrift fuer Naturforschung, B: Chemical Sciences 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 C9H17NO, Formula: C12H10F2Si.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia