共查询到20条相似文献,搜索用时 31 毫秒
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The longitudinal Zeeman effect of the 2 E ←4 A 2 transition of the Cr+3 ion in single crystals of 2[Cr(en)3Cl3] . KCl . 6H2O has been measured using circularly polarized light as a function of magnetic field strength between 0 and 160 kgauss at ~80 K. The g factor for the ground state was determined to be g ‖(4 A 2) = 2·01±0·05, in agreement with the E.S.R.-determined value. The ratio between the excited state g values and that of the ground state was determined; using the value g ‖(4 A 2) = 1·99, the g factors g ‖(2) = 2·61±0·04 and g ‖() = 1·47±0·04 were obtained. 相似文献
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David M. Hirst 《Molecular physics》2013,111(6):2017-2022
Ab initio configuration interaction calculations for the à 2Σ+ and states of HCN+ are presented. Minima occur at r CH = 2·03 a 0, r CN = 2·25 a 0 (à 2Σ+) and r CH = 2·75 a0, r CN = 2·26 a 0 (). The potential surface for the state has a local maximum as the hydrogen atom is pulled away from CN. The barrier height is calculated to be 0·27 eV. 相似文献
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The origin band of the 2760 å system of p-chlorofluorobenzene has been shown to be a type B band of a prolate asymmetric top. The electronic assignment of the system is therefore 1 B 2-1 A 1. The excited state rotational constants are: compared with the estimated ground state constants: The rotational origin of the band is at 36275·1 ± 0·2 cm-1. 相似文献
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H.D.B. Jenkins 《Molecular physics》2013,111(6):1843-1852
Electrostatic energies and Madelung parameters for M 2SO4 (M = Li, Na, K, Rb and Cs) and for MSO4 (M = Ca) are reported. An assessment of the charge distribution within the sulphate ion (q 0 = -0·80) is made and values: and are assigned to the enthalpies of formation and solvation of the gaseous sulphate ion. The total lattice potential energies are found to be A value of -1267 kJ mol-1 is assigned for the oxide ion affinity of sulphur trioxide. 相似文献
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Average translational self-diffusion coefficients, , have been determined in the smectic E, B and A phases of unaligned samples of iso-butyl 4-(4′-phenylbenzylideneamino) cinnamate. A radiotracer technique was employed which was based on the serial sectioning method used in the study of diffusion in solids. In the smectic E phase is about 1 × 10-14 m2 s-1. The self-diffusion in the smectic B phase fits reasonably well to an Arrhenius law with an activation enthalpy of 82 kJ mol-1. The transition from the smectic B to A phase results in a dramatic rise in . In the smectic A phase the results fit an activation enthalpy for self-diffusion of about 168 kJ mol-1. Similarities between the diffusion in the smectic E and B phases and in plastic solids are observed. 相似文献