Hunter, B. K. published the artcileChemical shifts for compounds of the Group IV elements silicon and tin, COA of Formula: C12H10F2Si, the publication is Canadian Journal of Chemistry (1968), 46(8), 1399-414, database is CAplus.
Chem. shifts for 29Si in seven series of mols. of the type XnSiY4-n have been measured where Y is an alkyl group and X varies widely in electronegativity. A considerable amount of proton and F chem. shift data has been obtained for the same compounds and in one series (CH3)nSiCl4-n the 13C chem. shifts in the Me groups have been measured. The gross features of the 29Si chem. shifts are understood by considering the series (Alkyl)3SiX with the electronegativity of X widely varied. The hybridization at Si is approx. conserved in these series and the theoretically anticipated linear dependence on electronegativity of X is demonstrated. The ligands X = O, N, and F are exceptional and these 29Si chem. shifts have a high field shift. This addnl. shielding has been associated with (p ¡ú d)¦Ð bonding. The approx. nature of present chem. shift theories is not likely to provide a measure of the order of (p ¡ú d)¦Ð bonding. The 29Si chem. shifts in the series XnSiY4-n are discussed and also indicate a net shielding effect with (p ¡ú d)¦Ð bonding. A comparison is always made with corresponding 13C chem. shifts. A long-range proton-proton coupling in mols. Me3SnX and Me2SnX2, H-C-Si-C-H is observed only when X = O, (N?), F. 119Sn chem. shifts in a series of alkyltin compounds have been measured. The same dependence on the electronegativity of X in the series (alkyl)3SnX is noted, but the variation of X is much more limited. Some shielding due to (p ¡ú d)¦Ð bonding in the series (Butyl)nSnCl4-n is suggested. The Sn chem. shift has been measured as a function of concentration and solvent for simple methyltin bromides and chlorides. In donor solvents, it has been possible to obtain equilibrium constants for complex formation from Sn dilution chem. shifts. The nature of the bonding in complexes suggested previously is consistent with the variations in the coupling constant |JSn-C-H| with concentration The distinction between ionization and complex formation with the solvent for (CH3)2SnCl2 can be made on the basis of the concentration dependence of |JSn-C-H|. The spin-lattice relaxation time T1 for 13C and 29Si in natural abundance in several pure degassed compounds has been measured. These are not in the case of 13C (as has been suggested) of the order several min., but are always <50 sec. and in one case as low as 3-4 sec. Both 29Si and 13C T1 values follow what might be expected on the basis of a dipole-dipole mechanism from the closest protons. The short value of 35 sec. in CS2 is probably a result of spin-rotation interaction in the liquid state. 46 references.
Canadian Journal of Chemistry 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, COA of Formula: C12H10F2Si.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia