Receixd 29 Augwt 1978 ?he reaction of Sik~&~) with Hz &> in the temperature range 900-l 143 K has been studied by a m-spect~ometh method. Second and third law rezrion enthalpies were obtained for SiBqfg) + H2 (g) = SiHBr3 (;s) + HBr(g), SiHBr3(g) + H2 Q) = SiQ Br2 B) + HBr@). and SiHzBr2 (g) + Hz (3
Mass spectrometric determination of the heats of formation of the silane fluorides
โ Scribed by Milton Farber; R.D. Srivastava
- Publisher
- Elsevier Science
- Year
- 1977
- Tongue
- English
- Weight
- 389 KB
- Volume
- 51
- Category
- Article
- ISSN
- 0009-2614
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๐ SIMILAR VOLUMES
Until the heat of formation of some fluorine compound from its dements was known, it was manifestly impossibl e to determine the heat of formation of the fluorides. On the other hand, as soon as the heat of formation of any fluorine compound had been determined, that of any other fluorine compound c
The atomization energies, AIf$ o. 110 i 5 kcal mole-' of the molecules AIAu, and ,II, Au have been determined as 121 k 6 nnd or 506.3 + 25.'1 and 4G0.2 + 20.9 kJ mole-', respectively. Theses atomization energies are discussed in terms of bond strengths and the Pauling model of a polar bond. .4vaila
Different theoretical approaches in determining heats of formation (AHf) at the chemical accuracy level ( +\_ kcal/mol) are commented on. We show that calculations at the MP4SDTQ/6-311 + + G (3df, 2p) level of molecular orbital theory reproduce experimental results best. Accurate determination of AH