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'Vibration Spectra' in keywords Facet   section ZfN Section A  [X]
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1988 (1)
1986 (2)
1985 (1)
1Author    M. Parensen, W. Brockner, B. N. Cyvin, S. J. CyvinRequires 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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 TEI-XML for    default:Reihe_A/41/ZNA-1986-41a-1233.pdf 
 Identifier    ZNA-1986-41a-1233 
 Volume    41 
2Author    L. Ohse, M. Somer, W. BrocknerRequires cookie*
 Title     
 Abstract    c h w in g u n g s b e re c h n u n g e n d e r k ä f i g s tr u k t u r i e r t e n M o le k ü le a -P 4S 4 , A s 4S 4 u n d A s 4S e 4 Molecular Vibration Analysis of the cage-like Molecules tx-P^S^, ,4s4S4, and As^Se^ A normal coordinate analysis for the cage-like molecules a-P4S4, As4S4 and As4Se4 is performed, based on a simple initial force field with three numerical parameters and valence coordinates including redundancies. The force field is refined by adjusting the symmetry force constants to fit the observed frequencies. The final force field, potential energy distribution (PED), mean amplitudes of vibration and the standard thermodynamic functions from spectroscopic data are also given for the title compounds. 
  Reference    Z. Naturforsch. 43a, 326—330 (1988); received February 3 1988 
  Published    1988 
  Keywords    a-P4S4, As4S4, As4Se4, Vibration Spectra, Normal Coordinate Analysis 
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 TEI-XML for    default:Reihe_A/43/ZNA-1988-43a-0326.pdf 
 Identifier    ZNA-1988-43a-0326 
 Volume    43 
3Author    S. J. Cyvin, B. N. Cyvin, C. Wibbelmann, R. Becker, W. Brockner, M. ParensenRequires cookie*
 Title    Synthesis, Vibrational Spectra and Normal Coordinate Analysis of Cesium-Hexathiohypodiphosphate CS4P2S6  
 Abstract    The title compound has been prepared by elemental synthesis at high temperatures and also by reaction of Na 4 P 2 S 6 • 6 H 2 0 with CsCl in aqueous solution. Both reaction products have closely related vibrational spectra which are assigned on the basis of a P 2 Sg anion with perturbed D 3d symmetry. A normal coordinate analysis has been performed using a force Field with 4 initial force constants. The refined force Field, potential energy distribution (PED), mean amplitudes of vibration and Coriolis coupling constants are given. 
  Reference    Z. Naturforsch. 40a, 709—713 (1985); received May 3 1985 
  Published    1985 
  Keywords    Cesiumhexathiohypodiphosphate, Cs 4 P 2 S 6, Vibration Spectra, Normal Coordinate Analysis 
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 TEI-XML for    default:Reihe_A/40/ZNA-1985-40a-0709.pdf 
 Identifier    ZNA-1985-40a-0709 
 Volume    40 
4Author    B. N. Cyvin, S. J. Cyvin, M. Somer, W. BrocknerRequires 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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 TEI-XML for    default:Reihe_A/41/ZNA-1986-41a-0549.pdf 
 Identifier    ZNA-1986-41a-0549 
 Volume    41