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Radiochemistry

, Volume 59, Issue 3, pp 240–246 | Cite as

Specific features of the cis labilization effect in the series of pentacarbonyltechnetium halides

  • G. V. Sidorenko
  • D. A. Maltsev
  • A. E. Miroslavov
  • E. S. Stepanova
  • M. Yu. Tyupina
  • A. A. Lumpov
  • D. N. Suglobov
Article
  • 19 Downloads

Abstract

Causes of abnormal (from the viewpoint of traditional views on the cis labilization effect) enhancement of the tendency of pentacarbonyltechnetium halides to decarbonylation in the series I–Br–Cl–F are discussed. Two possible causes are considered: “nonclassical” halogen···cis-C interaction and electrostatic interactions of the halide ligand with the Tc atom in the initial complex and pentacoordinate transition state. Relative stabilization of the transition state due to electrostatic interactions is concluded to be the most probable cause of the observed trend.

Keywords

pentacarbonyltechnetium halides decarbonylation reactivity cis labilization quantum-chemical calculations 

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Copyright information

© Pleiades Publishing, Inc. 2017

Authors and Affiliations

  • G. V. Sidorenko
    • 1
  • D. A. Maltsev
    • 2
  • A. E. Miroslavov
    • 1
    • 3
  • E. S. Stepanova
    • 1
  • M. Yu. Tyupina
    • 1
  • A. A. Lumpov
    • 1
  • D. N. Suglobov
    • 1
  1. 1.Khlopin Radium InstituteSt. PetersburgRussia
  2. 2.Konstantinov Institute of Nuclear Physics, Orlova RoshchaGatchina, Leningrad oblastRussia
  3. 3.Radiochemistry Chair, Institute of ChemistrySt. Petersburg State UniversitySt. PetersburgRussia

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