In the range 110-200 nm the absorption features of Si#& closely resemble those of SiCl, and the peaks observed are tentatively assigned to the Rydberg transitions of a Cl lone-pair electron. Two diffuse bands in the SiF,CH3 absorption are also assigned to Rydberg excitations. The spectrum of GeF., s
The sign of the nuclear spin-rotation constants of H in SiH4 and GeH4 and 19F in CF4, SiF4, GeF4
β Scribed by H.L. Tigelaar; W.H. Flygare
- Publisher
- Elsevier Science
- Year
- 1970
- Tongue
- English
- Weight
- 309 KB
- Volume
- 7
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
Recentty. the absolute values of the H and 19F spio-rot~~on constants in SiH4
, GeH C&F4 wore reported on the basis of n;<4ecular beam measurements.
We note here a me 4r; CFQ, SiF4, afd od of determinmg the signs of the spin-rotation constants. Our results show that the proton spin-rotation constants in SiH4 a& G&Q are positive and the 19~ spin-rotation constants in CF4, SiF,, and GeF4 are negative,
π SIMILAR VOLUMES
Isokopic nuclear spti spin coupling constants have been e-&dated for ti possible couplings in HIO, NH3 and CH4 by two different double perturbation techniques. All calculations were performed employing bases of decors constructed with SCF canonical and, for H20, localized orbitals, produced by exten