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Chemistry of Heterocyclic Compounds

, Volume 47, Issue 11, pp 1378–1383 | Cite as

ab initio Calculation of the stereoelectronic structure of 1-(1-trichlorogermylethyl)-pyrrolidin-2-one*

  • V. P. FeshinEmail author
  • E. V. Feshina
Article
  • 48 Downloads

RHF/6-31G(d) and MP2/6-31G(d) calculations were carried out to study the stereoelectronic structure of 1-(1-trichlorogermylethyl)pyrrolidin-2-one with a pentacoordinated germanium atom. These results were compared with the X-ray diffraction structural analysis data. Upon formation of the Ge ← O coordination bond in this molecule, the electron density of all the atoms of the coordination polyhedron of the germanium atom, including the oxygen atom, increases, especially the axial chlorine atom, while the electron density of the germanium, nitrogen, and carbonyl group carbon atoms decreases. Different polarization of all three valence p-orbitals of each Cl atom of this molecule was established. 35Cl nuclear quadrupole resonance spectrum parameters were evaluated. The molecule also has stable form, in which the germanium atom is tetracoordinated. The total energy of this form is 2.7 kcal/mol higher than for the structure with a pentacoordinated germanium atom.

Keywords

1-(1-trichlorogermylethyl)pyrrolidin-2-one coordination interaction germanium atom coordination polyhedron p-orbital populations quantum-chemical calculations RHF/6-31G(d) and MP2/6-31(d) calculations stereoelectronic structure valence p-orbitals 

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Copyright information

© Springer Science+Business Media, Inc. 2012

Authors and Affiliations

  1. 1.Institute of Technical Chemistry, Ural BranchRussian Academy of SciencesPermRussia

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