Spectra and Nature of Bonding in Metal -α -Diimine and Related Complexes

  • P. Krumholz
Conference paper


The strongly colored complexes of the d6 ions Fe2+, Ru2+ and Os2+ with organic ligands containing the α-diimine grouping N= C-C = N, are similar in many respects to organic dyes. The visible and near U V spectrum of tris — -α -diimine iron(II) complexes consists of two composite bands with λ max — 500–600 mµ (A) and 350 – 400 mµ (B), respectively. The form of the A-band is nearly identical for a wide variety of diimine ligands (band width, δ- = 900 ± 100 cm-1, shoulder at 1200 – 1500 cm-1). The broad B-band is less characteristic and of low intensity in complexes of aliphatic diimines.


Coordination Compound Ring Fusion Composite Band Rare Earth Coordination Crystal Field Effect 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    KRUMHOLZ, P., J. Am. Chem. Soc., 75, 2163 (1953).CrossRefGoogle Scholar
  2. 2.
    BUSCH, D. H., and BAILAR, Jr., J. C., J. Am. Chem. Soc., 78, 1137 (1956), refer to this group as iron(II)-methine chromophore.CrossRefGoogle Scholar
  3. 3.
    PULLMAN, B., and PULLMAN, A.,“Les Theories Electroniques de la Chimie Organique”, Masson et Cie, pp. 495–497, Paris (1952).Google Scholar
  4. 4.
    WILLIAMS, R. J. P., J. Chem. Soc. (London), 1955, 137.Google Scholar
  5. 5.
    JØRGENSEN, C. K., Acta Chem. Scand., 11, 166 (1957).CrossRefGoogle Scholar
  6. 6.
    FIGGINS, P. E., and BUSCH, D. H., J. Phys. Chem., 65, 2236 (1961).CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Wien 1964

Authors and Affiliations

  • P. Krumholz
    • 1
  1. 1.Research Laboratory of Orquima S. A.São PauloBrasil

Personalised recommendations