Dissociation energy and excited-state properties of diatomic Sn2

Abstract

Laser vaporization of metallic tin is used to generate Sn, molecules in effusive and supersonic expansions. Laser-induced fluorescence studies using isotopic samples of '"Sn established the correct vibrational numbering in the excited FO; and determined the Sn, molecular constants. From the convergence limit of the upper state the Sn, dissociation energy was determined to be 15 330*25 cm-', in good agreement with recent ab initio theoretical predictions.

Quantum Monte Carlo with variable spins

“…40 and a dissociation energy of D exp e = 1.9125(31) eV 40 , which agree to our FPSODMC numbers to approximately 0.1 eV. We note that all DMC calculations (with and without SO) predict an equilibrium geometry that agrees with experiment to approximately 0.1Å.…”

Anion photoelectron spectroscopy of small tin clusters

“…Photodetachment from the 2 ⌸ u (⍀ϭ3/2) state can only result in 3 ⌸ u (⍀ϭ2 and 1͒ states. 48 We can approximate the position of the 3 ⌸ u (0 ϩ and 0 Ϫ ) states from the spacing between the 3 ⌸ u (1 u ) and 1 49 which places the unperturbed 0 ϩ and 0 Ϫ states at 1960 cm Ϫ1 above the 2 u state, or 2.344 eV binding energy in the PES. There is clearly very little electron signal in either Ho's 3 or our spectra at this energy.…”

“…There have been considerably fewer studies on small germanium clusters, and there is virtually no spectroscopic information on tin clusters other than for Sn 2 . [1][2][3] Ganteför and co-workers obtained the anion photoelectron spectra ͑PES͒ of small tin and lead clusters with relatively low photon energy and instrumental resolution, and no attempt was made to analyze the electronic structure. 4 Ho and co-workers obtained the PES of the tin, lead, and mixed tin-lead diatomic anions, and were able to assign the lowlying electronic states of both the neutral and anionic species.…”

Ti2: Accurate Determination of the Dissociation Energy from Matrix Resonance Raman Spectra and Chemical Interaction With Noble Gases

“…A chi-square value of not more than 1.3 ). [25] It is on the other hand stronger than the NaÀNa bond in Na 2 , for which a D o (298 K) value of 73.60 AE 0.25 kJ mol À1 was derived. [24] With 133 AE 6 kJmol…”