Abstract
In this paper, we present the detailed study on the correlation of the nuclear magnetic resonance (NMR) parameters with the results of density functional theory calculations performed for paramagnetic high-spin cobalt(II) complexes with trispyrazolylborate ligands. This work focuses on estimation of dipolar and contact shifts in mono-ligand high-spin cobalt(II) pyrazolylborate systems along with discussion on 1H NMR properties of the mentioned tetra-, penta- and hexacoordinate complexes. The calculation results show frontier molecular orbitals that may be responsible for contact shift. The calculated contact shift values are compared with the dipolar shift and hyperfine ones.
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The calculations have been performed by employing the computational resources of the Biotechnology Center at the Rzeszów University of Technology, and the Interdisciplinary Center of Mathematical Modeling at the University of Warsaw (G28-21), Poland.
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Długopolska, K., Kisała, J., Danilczuk, M. et al. The Analysis of Hyperfine Shifts of Mono-Ligand High-Spin Cobalt(II) Pyrazolylborate Complexes. Appl Magn Reson 38, 321–335 (2010). https://doi.org/10.1007/s00723-010-0127-y
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DOI: https://doi.org/10.1007/s00723-010-0127-y