The dissociation energy of the intermetallic molecule AuMg was for the first time determined by the Knudsen-effusion mass spectrometry technique. Partial pressures of Au(g), Mg(g), AuMg(g) and Au,(g) species produced under equilibrium vaporization of an appropriate alloy were monitored in the temperature range 1870-2333 K. The collected data were analyzed by the second- and third-law methods for the gaseous equilibria AuMg(g) = Au(g) + Mg(g) and AuMg(g) + Au(g) = Au(g) + Mg(g). The selected value for the dissociation energy of AuMg at 0 K is Ddegrees(0)(AuMg) 175.4 +/- 2.7 kJ/mol. (C) 2003 Elsevier Science B.V. All rights reserved.
Mass spectrometric determination of the dissociation energy of the AuMg diatomic molecule / Balducci, Giovanni; Ciccioli, Andrea; Gigli, Guido; L. S., Kudin. - In: CHEMICAL PHYSICS LETTERS. - ISSN 0009-2614. - STAMPA. - 369:3-4(2003), pp. 449-453. [10.1016/s0009-2614(02)02022-5]
Mass spectrometric determination of the dissociation energy of the AuMg diatomic molecule
BALDUCCI, Giovanni;CICCIOLI, Andrea;GIGLI, Guido;
2003
Abstract
The dissociation energy of the intermetallic molecule AuMg was for the first time determined by the Knudsen-effusion mass spectrometry technique. Partial pressures of Au(g), Mg(g), AuMg(g) and Au,(g) species produced under equilibrium vaporization of an appropriate alloy were monitored in the temperature range 1870-2333 K. The collected data were analyzed by the second- and third-law methods for the gaseous equilibria AuMg(g) = Au(g) + Mg(g) and AuMg(g) + Au(g) = Au(g) + Mg(g). The selected value for the dissociation energy of AuMg at 0 K is Ddegrees(0)(AuMg) 175.4 +/- 2.7 kJ/mol. (C) 2003 Elsevier Science B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
