Hoshi, Takashi published the artcileFirst C2 Symmetrical Siloles: Synthetic, Structural, and Photophysical Studies of 7-Sila-7H-dibenzo[c,g]fluorenes, Category: catalysis-chemistry, the publication is Organometallics (2000), 19(22), 4483-4487, database is CAplus.
The syntheses of 7-sila-7H-dibenzo[c,g]fluorenes 1 were effected via dilithiation of 2,2′-dibromo-1,1′-binaphthyl (2) followed by cyclization of the resulting dianion with dihalosilanes: Me2SiCl2, Ph2SiCl2, and Ph2SiF2. The x-ray structural anal. of 7-sila-7,7-diphenyl-7H-dibenzo[c,g]fluorene (1b) provided the first geometrical parameters of the 7-sila-7H-dibenzo[c,g]fluorene derivative in which the silole skeleton was twisted in the C2 sym. conformation due to the significant steric repulsion of the binaphthyl group fixed within the van der Waals radii. The photophys. study and semiempirical PM3 calculation suggested the presence of significant ¦Ò*-¦Ð* conjugation in the LUMO of the 7-sila-7H-dibenzo[c,g]fluorene 1 like a silole.
Organometallics 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, Category: catalysis-chemistry.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia