Showing papers on "Tetrahedral molecular geometry published in 1970"
TL;DR: In this article, a rigorous calculation of the quantum-mechanical rotational partition function for tetrahedral XY4 molecules yields Qr = ( 1 12 )(2IY + 1)4π 1 2 α- 3 2 exp(α/4), where IY is the spin of the Y nucleus, and α ≡ Bhc/kT.
Abstract: A rigorous calculation of the quantum-mechanical rotational partition function for tetrahedral XY4 molecules yields Qr = ( 1 12 )(2IY + 1)4π 1 2 α- 3 2 exp(α/4), where IY is the spin of the Y nucleus, and α ≡ Bhc/kT. This result is accurate to 1 per cent or better for all values of B and T such that α 1 5 .
53 citations
TL;DR: Binary collision-induced rotational far IR spectrum of tetrahedral molecular gas, using induced absorption theory as mentioned in this paper, was used to study the effect of the collision on the spectrum.
Abstract: Binary collision-induced rotational far IR spectrum of tetrahedral molecular gas, using induced absorption theory
48 citations
TL;DR: In this article, the first ortho-para transitions were observed in the ground electronic, ground vibrational, and ground rotational state by combining a simple level-crossing technique with the conventional molecular-beam magnetic-resonance method.
Abstract: Ortho-para transitions have been observed directly in C${\mathrm{H}}_{4}$ for the first time. These normally forbidden transitions were observed in the ground electronic, ground vibrational, and $J=2$ rotational state by combining a simple level-crossing technique with the conventional molecular-beam magnetic-resonance method. It is shown how this spectrum can be used to measure, for certain tetrahedral molecules, the interaction constants which appear in the Zeeman, nuclear-hyperfine and rotational-distortion Hamiltonians.
45 citations
TL;DR: The compound KF·4HF, prepared by the addition of anhydrous hydrofluoric acid to potassium fluoride, was shown, on the basis of an X-ray structure determination, to be potassium tetrahydrogen pentafluoride, K[H4F5].
20 citations