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THERMOCHEMISTRY OF THE AZIDE ANION - ASSIGNMENT OF DELTA(F)H(0)(N3-,G) USING VISCOSITY B-COEFFICIENT DATA
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UNSPECIFIED (1993) THERMOCHEMISTRY OF THE AZIDE ANION - ASSIGNMENT OF DELTA(F)H(0)(N3-,G) USING VISCOSITY B-COEFFICIENT DATA. JOURNAL OF PHYSICAL CHEMISTRY, 97 (30). pp. 7876-7879.
Research output not available from this repository, contact author.Abstract
Uncertainty concerning the magnitudes of key thermodynamic values at the heart of azide chemistry has prevailed for a number of years. The ''direct' experimental determination of quantities like DELTA(f)H0(N3-,g), differ quite markedly (some 50 kJ mol-1) from the values indicated from indirect thermochemical cycles via lattice energies. The viscosity B-coefficients of alkali metal azides in aqueous solution are utilised, in conjunction with a well-established correlation, to estimate these important quantities from a new standpoint. The following values constitute the best estimates via this route: DELTA(f)H0(N3-,g) = 189 +/- 5.2 and DELTA(f)H0(N3.,g) = 450.5 +/- 11.8 kJ mol-1 (based on the averaged electron affinity of the azide radical, A(e)(N3.,g) = 261 +/- 5.6 kJ mol-1 from recent studies). Estimates of the lattice energies of the azide salts are presented. A value for the bond dissociation energy D0(H-N3) is assigned to be 388 +/- 13 kJ mol-1.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QD Chemistry | ||||
| Journal or Publication Title: | JOURNAL OF PHYSICAL CHEMISTRY | ||||
| Publisher: | AMER CHEMICAL SOC | ||||
| ISSN: | 0022-3654 | ||||
| Official Date: | 29 July 1993 | ||||
| Dates: |
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| Volume: | 97 | ||||
| Number: | 30 | ||||
| Number of Pages: | 4 | ||||
| Page Range: | pp. 7876-7879 | ||||
| Publication Status: | Published |
Data sourced from Thomson Reuters' Web of Knowledge
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