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Zeitschrift für Naturforschung B

A Journal of Chemical Sciences

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1865-7117
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Volume 46, Issue 9

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Normalkoordinatenanalyse an Oktaederkomplexen des Typs [MXnY6-n]z-, M = Ru, Rh, Os, Ir, Pt; Χ ≠ Y = F, Cl, Br; n = 0-6; z = 1 -3 / Normal Coordinate Analysis on Octahedral Complexes of the Type [ΜΧnΥ6-n]z-, M = Ru, Rh, Os, Ir, Pt; Χ ≠ Y = F, Cl, Br; n = 0-6; z = 1-3

K. Irmer
  • Institut für Anorganische Chemie der Christian-Albrechts-Universität, Olshausenstraße 40, D-2300 Kiel
  • Other articles by this author:
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/ W. Preetz
  • Institut für Anorganische Chemie der Christian-Albrechts-Universität, Olshausenstraße 40, D-2300 Kiel
  • Other articles by this author:
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Published Online: 2014-06-02 | DOI: https://doi.org/10.1515/znb-1991-0911

Normal coordinate analyses for all compounds of the series [MXnY6-1]z-, M = Ru, Rh, Os, Ir, Pt; Χ ≠ Y = F, Cl, Br; n = 0-6; z = 1-3, including the geometric isomers for n = 2, 3, 4 have been performed, based on a general valence force field. For the isostructural species of the point symmetries Oh (n = 0, 6), D4h (2,4, trans), C4v (1, 5), C3v (3, fac), C2v (2,4, cis; 3, mer) sequences of decreasing frequencies are established. Due to the different trans influences X < Y (F < Cl < Br) in asymmetric axes X′–M–Y′, the M–Y′ bonds are strengthened and the M – X′ bonds are weakened, as indicated by valence force constants for M – Y′ up to 21 % higher (Pt–Cl′), for M–X′ down to 18% lower (Pt–F′), as compared with the values calculated for symmetrical X–M–X and Y–M–Y axes, respectively. The influence of the different central ions and their oxidation numbers on the force field is discussed.

About the article

Received: 1991-04-12

Published Online: 2014-06-02

Published in Print: 1991-09-01


Citation Information: Zeitschrift für Naturforschung B, Volume 46, Issue 9, Pages 1200–1206, ISSN (Online) 1865-7117, ISSN (Print) 0932-0776, DOI: https://doi.org/10.1515/znb-1991-0911.

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© 1946 – 2014: Verlag der Zeitschrift für Naturforschung. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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