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Digitale Medien

Experimental research on specific volumes of rubidium and potassium vapors (1987)

Voljak, L. D. ; Nikitin, A. N. ; Stepanov, V. G.

Springer

International journal of thermophysics 8 (1987), S. 239-246

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ISSN: 1572-9567

Schlagwort(e): dosing device ; piezometer ; potassium ; PVT measurements ; rubidium ; specific volume ; superheated vapor

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract Results are reported of an experimental study of superheated rubidium vapor in the temperature range 1450–2000 K and pressure range 1.7–5.2 MPa and potassium in the range 1500–2100 K and 1.4–4.0 MPa. The experiments have been performed with an apparatus adaoted to implement a modified constant-volume piezometer technique, where the sensing element of a pressure transducer represented by a diaphragm is placed in a low-temperature zone. A dosing device is described which permits the performance of accurate measurements of the mass of the metal in the piezometer chamber. The present results are in good agreement with those reported by other investigators in the overlaping temperature and pressure ranges.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00515206

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Digitale Medien

Dipole moments of the carbonyl groups in cyclic β-diketones from IR spectroscopy data (1995)

Pisarenko, L. M. ; Nikitin, A. V.

Springer

Russian chemical bulletin 44 (1995), S. 670-677

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ISSN: 1573-9171

Schlagwort(e): IR spectroscopy ; dipole moments ; coplanar arrangement ; carbonyl groups ; 2-arylindan-1,3-diones

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Notizen: Abstract The αCO angles between the carbonyl groups and the dipole moments of a number of 2-arylindan-1,3-diones were determined from the data of IR spectroscopy. The effects of substituents on αCO depending on their positions and inductive factors were found. It was established that the interaction between the vibrations of the carbonyl groups depends on both the αCO angle or the ΣμCO dipole moment and the coplanar arrangement of these groups.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00698501

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