Reference

The dissociation energy of magnesium chloride

The dissociation energy of magnesium chloride. Farber, Milton; Srivastava, R. D. (Space Sci., Inc., Monrovia, Calif., USA). Chem. Phys. Lett., 42(3), 567-9 (English) 1976. CODEN: CHPLBC. DOCUMENT TYPE: Journal CA Section: 69 (Thermodynamics, Thermochemistry, and Thermal Properties) An effusion-mass spectrometric study of the vapor species produced by the reaction of MgCl2(g) [7786-30-3] with Mg(g) was performed from 982 to 1243 K. From the reaction enthalpies, second and third law heats of formation for MgCl(g) [14989-29-8] were obtained, yielding a D0 of 77.4 .+-. 0.5 kcal/mole for the dissocn. of MgCl to ground state atoms.

Short distance harpooning reactions of alkaline-earth atoms: LIF study of the magnesium(1S) + molecular chlorine reaction

Short distance harpooning reactions of alkaline-earth atoms: LIF study of the magnesium(1S) + molecular chlorine reaction. Bourguignon, Bernard; Gargoura, Mohammed Ali; Rostas, Joelle; Taieb, Guy (Lab. Photophys. Mol., Univ. Paris-Sud, Orsay 91405, Fr.). J. Phys. Chem., 91(8), 2080-6 (English) 1987. 7782-50-5 and 14989-29-8 which are cas registry numbers are also used here. CODEN: JPCHAX. ISSN: 0022-3654. DOCUMENT TYPE: Journal CA Section: 73 (Optical, Electron, and Mass Spectroscopy and Other Related Properties) Section cross-reference(s): 78 The Mg(1S) + Cl2 reaction was studied by laser-induced fluorescence (LIF) detection of the MgCl(X2S+) product. The energy disposal differs markedly from that of the Ca(1S) + Cl2 and F2 reactions, and of all previously reported harpooning reactions of dihalogens with alk.-earth atoms. The MgCl is rotationally excited, whereas it is generally admitted that harpooning reactions lead to vibrational excitation of the reaction product. The harpooning mechanism provides an explanation for these results. The key factor for detg. whether rotation or vibration is preferentially excited in the reaction product is the electron jump distance. .