| | 1 | Author
| M. Parensen, W. Brockner, B. N. Cyvin, S. J. Cyvin | Requires cookie* | | | Title
| Schwingungsspektren und Normalkoordinatenanalyse des P2Se^_-Anions in den konformeren staggered-und eclipsed-Anordnungen in TL^Se** und Na4P2Se6  | | | | Abstract
| Na4P2Se6 has been prepared by elemental synthesis at high temperatures and characterized by vibrational spectroscopy. The vibrational frequencies of Na4P2Se6 are assigned on the basis of eclipsed P2Se6_ conformers with D3h symmetry, those of Tl4P2Se6 on the basis of staggered P2Se£-units with D3d symmetry. A normal coordinate analysis has been performed for both conformers. The refined force field, potential energy distribution (PED), mean amplitudes of vibration an Coriolis coupling constants are given. | | | |
Reference
| Z. Naturforsch. 41a, 1233—1237 (1986); eingegangen am 5. Juli 1986 | | | |
Published
| 1986 | | | |
Keywords
| Tl4P2Se6, Na4P2Se6, Vibration Spectra, Normal Coordinate Analysis, Conformation Isomery Vibrational Spectra | | | |
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| default:Reihe_A/41/ZNA-1986-41a-1233.pdf | | | | Identifier
| ZNA-1986-41a-1233 | | | | Volume
| 41 | |
| 2 | Author
| B. N. Cyvin, S. J. Cyvin, M. Somer, W. Brockner | Requires cookie* | | | Title
| Schwingungsberechnungen der käfigstrukturierten Molekülionen P7 -, AS7 " und Sbv" | | | | Abstract
| Normal coordinate analyses for the cage-like molecule ions P3-, As3-and Sb3-with C 3 symmetry were performed, based on a very simple initial force field with three numerical param eters transferred from P4S3. FIR frequencies of Sb3-have been recorded. The force field was refined by adjusting the symmetry force constants to fit the observed frequencies. The final force fields were used to calculate the potential energy distribution terms (PED), the mean amplitudes of vibration and the first-order Coriolis coupling constants for the title molecule ions. | | | |
Reference
| Z. Naturforsch. 41a, 549 (1986); eingegangen am 24. Dezem ber 1985 | | | |
Published
| 1986 | | | |
Keywords
| Vibration Spectra, Cage Compounds, P7-, As3-, Sb^~ | | | |
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| default:Reihe_A/41/ZNA-1986-41a-0549.pdf | | | | Identifier
| ZNA-1986-41a-0549 | | | | Volume
| 41 | |
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