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Updated: Apr 4, 2026

Atomic Scale Structural Studies of Macromolecular Assemblies by Solid-state Nuclear Magnetic Resonance Spectroscopy
Published on: September 17, 2017
Anharmonic Calculation of Structural and Spectroscopic Parameters of the cis-DONO Molecule
V P Bulychev1, M V Buturlimova1, K G Tokhadze1
1Physical Faculty, St. Petersburg State University , Peterhof, St. Petersburg 198504, Russian Federation.
Abstract:
The equilibrium nuclear configuration of the cis-DONO molecule is calculated in the MP2/aug-cc-pVTZ approximation. The main objective of this work is to calculate the frequencies and absolute intensities for fundamental transitions of cis-DONO, to examine the influence of H/D substitution on the form of vibrational modes and structural and spectral parameters, and to formulate a feasible and reliable approach for calculating such parameters of H-bonded complexes formed by cis-DONO. Vibrational wave functions and energy values of cis-DONO are derived from variational solutions of anharmonic equations in one to four dimensions with the potential energy surfaces calculated by the MP2/aug-cc-pVTZ method. The equilibrium geometry and one-dimensional anharmonic frequencies and intensities of cis-DONO are also computed using the ccsd(t)/aug-cc-pVQZ approximation. All the calculated results are compared with the experimental data, the most accurate results of other authors, and the values obtained earlier for trans-DONO and cis- and trans-HONO using the MP2/aug-cc-pVTZ approximation.
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