Compton p&i!es of fwrnamide and ~~enz~uinone have been measured with 60 keV gamma-rays. The experimental results zre compared with prof3es derived from Iocalised moiecukti orbital and iterative extended Hiickel methods and, in the case of formamide, al:;0 an ab initio selkonsistcnt field calculation
Experimental and theoretical compton profiles of CIS and trans-2-butene
β Scribed by R.S. Holt; M. Cooper; D.M. Hirst
- Publisher
- Elsevier Science
- Year
- 1978
- Tongue
- English
- Weight
- 511 KB
- Volume
- 55
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
The Compton profdes of the geometrΓ―c Γ―somers cis and trans-2-butene (CaHa) have been measured in the gas phase using 59.54 keV =oamma rays. The measured profdes are compared with profdes derived from SCF end LM0 modeIs. NO significant differences between the measured profdes are observed. However, comparΓ―son wΓ―th the theoretical profdes shows that in both cases the measured profiles are broader, having J(0) values between 1 and 5% lower than those predicted by theory.
L _ Introduction
In a Compton scattering experiment the energy spectrum of inelastically scattered X-rays or gamma rays is measured at a fΓ―xed angle. The measured dΓ―fferential
π SIMILAR VOLUMES
The position of abstraction by H atoms from ethylene, propylene, butene-1, and cisand trans-butene-2 and the rates of abstraction relative to addition have been measured at 25Β°C. From ethylene, abstraction relative to addition was 5 3 X lo-\*. For propylene, butene-1, cis-butene-2, and trans-butene
H2S increases the thermal isomerization of butene-2 cis (B,) to butene-1 (B1) and butene-2 trans (Bt) around 500Β°C. This effect is interpreted on the basis of a free radical mechanism in which buten-2-yl and thiyl free radicals are the main chain carriers. B1 formation is essentially explained by th