Ab initio calculations were employed to investigate M+-RG2 species, where M+ =3D Ca, Sr, Ba, and Ra and RG =3D He-Rn. Geometries have been optimized, and cuts through the potential energy surfaces containing each global minimum have been calculated at the MP2 level of theory, employing triple-zeta quality basis sets. The interaction energies for these complexes were calculated employing the RCCSD(T) level of theory with quadruple-zeta quality basis sets. Trends in binding energies, D-e, equilibrium bond lengths, R-e, and bond angles are discussed and rationalized by analyzing the electronic density. Mulliken, natural population, and atoms-in-molecules (AIM) population analyses are presented. It is found that some of these complexes involving the heavier group 2 metals are bent whereas others are linear, deviating from observations for the corresponding Be and Mg metal-containing complexes, which have all previously been found to be bent. The results are discussed in terms of orbital hybridization and the different types of interaction present in these species.
Page:
5995---6005
Related
Batch download
Cited By
noting
Similar Literature
Submit Feedback
Please wait while the file you selected is being converted