Titlebook: Quantum Aspects of Molecular Motions in Solids; Proceedings of an IL Anton Heidemann,Andreas Magerl,Tasso Springer (Pro Conference proceedi

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NH 4 + Motions in NH4MF3 Cubic PerovskitesThe NH . rotational contribution to the heat capacity of NH.MF. perovskites (M= Zn, Co, Mn, Cd, Mg) are reviewed and compared in the light of the new structural and spectroscopic data. The influence of NH..F bonding is evidenced.and a

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https://doi.org/10.1007/978-3-642-71914-1chemistry; crystal; materials science; neutron diffraction; scattering

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The Temperature Dependence of Rotational Tunneling — Simulation of a Quantum System at Finite Temper. Symmetry effects of this kind are well known in the gas phase e.g. of molecular hydrogen where an antisymmetric spatial wave function combines with a symmetric spin function and vice versa, in order to yield a total wave function which is antisymmetric under the exchange of the two protons.