Diiicrences between SiHS and CH; are more significant than the similarities. The proton affinity of Sib exceeds that of CH4 by ~25 kcal/mol. but the heat of hydrogenation of SiH; is smaller than that of CH: by nearly the mrne amount. Like CH:, the Cs structures of SiH: are preferred, but SiH: is bes
The electronic structure and stability of CH+5 and CH−5
✍ Scribed by J.J.C. Mulder; J.S. Wright
- Publisher
- Elsevier Science
- Year
- 1970
- Tongue
- English
- Weight
- 497 KB
- Volume
- 5
- Category
- Article
- ISSN
- 0009-2614
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Thermochemical data, AH:\_ I." and ASi\_ ],", for the clustering reactions CH: (CH,),\_, +CH,=CH: (CH,),, with n= 1-9 were measured using a pulsed electron-beam mass spectrometer. Both -AH:-,,n and -AS:\_, ,n show irregular decreases between n = 2 and 3, and 7 and 8, the latter indicating the forma
hydrogen-bonded water molecules are located at the intersections of the channels. The p4 squarate has C,, crystallographic symmetry, whereas the pJp, squarate and vanadium dimer have D,, symmetry. The window of the square channels has dimensions p a l 2 x c = 7.04 x 7.11 A, which is comparable to th