Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 17, Issue 1, Pages 161-173Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201001343
Keywords
density functional calculations; mercury; molecular dynamics; NMR spectroscopy; solvent effects
Categories
Funding
- National Science Foundation [CHE 447321, 952253]
Ask authors/readers for more resources
Ab initio molecular dynamics (MD) and relativistic density functional NMR methods were applied to calculate the one-bond Hg-C NMR indirect nuclear spin spin coupling constants (J) of [Hg(CN)(2)] and [CH3HgCl] in solution. The MD averages were obtained as J(Hg-199-C-13) = 3200 and 1575 Hz, respectively. The experimental Hg-C spin spin coupling constants of [Hg(CN)(2)] in methanol and [CH3HgCl] in DMSO are 3143 and 1674 Hz, respectively. To deal with solvent effects in the calculations, finite droplet models of the two systems were set up. Solvent effects in both systems lead to a strong increase of the Hg-C coupling constant. From a relativistic natural localized molecular orbital (NLMO) analysis, it was found that the degree of delocalization of the Hg 5d sigma nonbonding orbital and of the Hg-C bonding orbital between the two coupled atoms, the nature of the trans Hg-C/Cl bonding orbital, and the s character of these orbitals, exhibit trends upon solvation of the complexes that, when combined, lead to the strong increase of J(Hg-C).
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available