Spectra of Diatomic Molecules (Van Nostrand Reinhold, New York, 1950), p. Herzberg, Molecular Spectra and Molecular Structure I. Hepburn, in Laser Techniques in Chemistry, edited by A. ![]() Armentrout (Elsevier, New York, 2003), pp. Species with enthalpy of formation at 0K in database. 1: Theory and Ion Chemistry, edited by P. CCCBDB List of species with enthalpy of formation at 0 K II. Hepburn, in The Encyclopedia of Mass Spectrometry, Vol. 1: Theory and Ion Chemistry, edited by P. For chemical reactions, combining bond dissociation energies for bonds formed and bonds broken in a chemical reaction using Hess's Law can be used to estimate reaction enthalpies. The possible mechanism for ion-pair formation in HCl and DCl is discussed in light of these high resolution results. Bond dissociation energies are useful in assessing the energetics of chemical processes. Although there is qualitative agreement between the current results and previous experimental and theoretical work, there are some important differences. The present study also measured the high resolution spectra for photoion-pair production for HCl and DCl in the threshold region for ion-pair production (∼86 nm). Ionization energy determinations 12.752 0.006, PE, Pennetreau, Natalis, et al., 1983, LBLHLM 12.748, PE, Von Niessen, Asbrink, et al., 1982, LBLHLM. These results are compared to a recent study of Born–Oppenheimer breakdown in HCl by Coxon and Hajigeorgiou, where high resolution spectroscopic data was used to fit Born–Oppenheimer breakdown correction terms for the intramolecular potential function. The bond energy for HCl was in agreement with our previous determination, D 0 ( H–Cl )=35748.2☐.8 cm −1. The difference in D e for the two isotopomers was found to be: D e ( H–Cl )−D e ( D–Cl )=3.2☑.0 cm −1. Combined with the known ionization energy of H(D) and the electron affinity of Cl, the difference between their bond dissociation energies is calculated, and therefore an experimental determination of the effect of Born–Oppenheimer breakdown on the dissociation limit of the ground state potential curve has been obtained. From the high-resolution TIPP spectra the ion-pair thresholds of the two molecules have been precisely measured. Medvedev, V.A.CODATA Key Values for Thermodynamics.Threshold ion-pair production spectroscopy (TIPPS) has been applied to two isotopomers, HCl and DCl. KK Irikura "Experimental Vibrational Zero-Point Energies: Diatomic Molecules" J. TN Olney, NM Cann, G Cooper, CE Brion, Absolute scale determination for photoabsorption spectra and the calculation of molecular properties using dipole sum-rules, Chem. ![]() ![]() Constants of Diatomic Molecules, Van Nostrand Reinhold Co., 1979 Hydrochloric acid-d Enthalpy of formation (Hfg), Entropy, Integrated heat capacity (0 K to 298. Herzberg, G., Molecular Spectra and Molecular Structure. Landolt-Bornstein: Group II: Volume 6 Molecular Constants from Microwave, Molecular Beam, and Electron Spin Resonance Spectroscopy Springer-Verlag. Please address comments about this page to Penner, D Weber "Quantitative Infrared-Intensity and Line-Width Measurements on HCl, HBr, and NO" Analytical Chemistry 23 (7), 1048, 1951 NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites.įurther, NIST does not endorse any commercial products that may be mentioned on these sites. There may be other web sites that are more appropriate for your purpose. No inferences should be drawn on account of other sites being referenced, or not, from this page. We have provided these links to other web sites because they may have information that would be of interest to you. Vibration specific dipole moments Vibrational Quantum numbersĬalculated electric quadrupole moments forĮlectric dipole polarizability (Å 3) alphaĬalculated electric dipole polarizability forīy selecting the following links, you may be leaving NIST webspace. You are here: Experimental > One molecule all propertiesĮxperimental data for HCl - (hydrogen chloride anion)Īcide chlorhydrique Acido cloridrico Basilin Chlorohydric acid Chlorwasserstoff Hydrochloric Acid Hydrochloric acid gas Hydrochloride Hydrogen chloride Muriatic acid NA 1789 Įxperimental dipole measurement abbreviations: MW microwave DT Dielectric with Temperature variation DR Indirect (usually an upper limit) MB Molecular beam
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