The geometry of the H2NO radical: do the quantum mechanical results converge?

Istvan Komaromi, Jean M.J. Tronchet

Research output: Contribution to journalArticle

15 Citations (Scopus)


Different kinds of SCF and post-SCF methods were used for the calculations of geometry and inversional barrier (if any) of the H2NO radical. The UHF and ROHF type wavefunctions predict a definitive pyramidal structure with relatively small (0.9-0.3 kcal/mol) inversion barriers. Taking into account the electron correlation with relatively large basis sets the structure became planar (using MPn and CCD methods) and nearly planar with negligible inversional barrier (with CISD, QCISD(T) and CCD-ST(CCD) wavefunctions) using a wide range of Gaussian basis sets.

Original languageEnglish
Pages (from-to)444-450
Number of pages7
JournalChemical Physics Letters
Issue number5
Publication statusPublished - Dec 16 1993

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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