29Si NMR chemical shifts of silane derivatives
Geometries and 29Si NMR chem. shifts are calcd. for silanes SinH2n+2, n=1,...,5, methylsilanes SiHnMe4-n, methoxysilanes SiHn(OMe)4-n, and methylmethoxysilanes SiMen(OMe)4-n, n=0,...,4. Geometries and 29Si NMR chem. shifts are in satisfying agreement with expt. within LCGTO-DFT at the DZVP/LDA level for geometries and IGLO-III/GGA (GGA=PW91,PBE) level for shielding consts., which is an improvement to B88PW86, P86PW86 and B3LYP results. If an auxiliary basis is applied to express the Coulomb potential, g-functions have to be included to reproduce SiOSi angles and 29Si NMR chem. shifts correctly. [on SciFinder (R)]
2002
357
1,2
1
7
CAN 137:162664
77-7
Magnetic Phenomena
Department of Physical Chemistry,University of Geneva,Geneva,Switz.
Journal
written in English.
681-84-5 (Tetramethoxysilane); 992-94-9 (Methylsilane); 993-07-7 (Trimethylsilane); 1066-40-6 (Trimethylhydroxysilane); 1066-42-8 (Dimethyldihydroxysilane); 1111-74-6 (Dimethylsilane); 1112-39-6 (Dimethyldimethoxysilane); 1185-55-3 (Methyltrimethoxysilane); 1590-87-0 (Disilane); 1825-61-2 (Trimethylmethoxysilane); 2445-53-6 (Methyltrihydroxysilane); 7783-26-8 (Trisilane); 7783-29-1 (Tetrasilane); 7803-62-5 (Silane); 10193-36-9 (Silicon tetrahydroxide); 13597-87-0 (Iso-tetrasilane); 14868-53-2 (Pentasilane); 14868-54-3 (Iso-pentasilane); 15947-57-6 (Neo-pentasilane) Role: PRP (Properties) (29Si NMR chem. shifts of silanes, methylsilanes, methoxysilanes, and methylmethoxysilanes calcd. theor.)
REVIEWED
OTHER