Abstract
Chemical shifts and shift changes with bond modification have been calculated for some small first-row-atom molecules employing a (6311/311/1)=[4s, 3p, d] heavy atom, (31)=[2s] hydrogen basis in the GIAO approach. Shifts and shift anisotropies using this intermediate size basis agree as well with experiment as other, more extensive basis sets; heavy atom shifts are determined reasonably well on an absolute basis and hydrogen shifts are acceptable on a relative scale. Nearly all shift first derivatives are negative with respect to bond lengthening as are the second derivative terms. These results suggest that in most cases a negative temperature coefficient for the chemical shifts of the heavy atoms will be observed, an effect which in fact does obtain in most cases known experimentally.
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Dates
Type | When |
---|---|
Created | 23 years, 1 month ago (July 26, 2002, 9 a.m.) |
Deposited | 1 year, 6 months ago (Feb. 9, 2024, 11:14 p.m.) |
Indexed | 1 year ago (Aug. 13, 2024, 4:32 a.m.) |
Issued | 39 years, 7 months ago (Jan. 15, 1986) |
Published | 39 years, 7 months ago (Jan. 15, 1986) |
Published Print | 39 years, 7 months ago (Jan. 15, 1986) |
@article{Chesnut_1986, title={Chemical shifts and bond modification effects for some small first-row-atom molecules}, volume={84}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.450529}, DOI={10.1063/1.450529}, number={2}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Chesnut, D. B. and Foley, C. K.}, year={1986}, month=jan, pages={852–861} }