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https://open.uns.ac.rs/handle/123456789/15954
Title: | Carbon-13 substituent chemical shifts in N-1-p-substituted phenyl-5-methyl-4-carboxy uracils | Authors: | Assaleh F. Marinković A. Jovanović, Bojan Csanádi J. |
Issue Date: | 15-May-2007 | Journal: | Journal of Molecular Structure | Abstract: | The 13C NMR chemical shifts of seven N-1-p-substituted phenyl-5-methyl-4-carboxy uracils have been measured in deuterated dimethyl sulfoxide (DMSO-d6). The correlation analysis for the substituent-induced chemical shifts (SCS) with inductive (σI), and various resonance (σR) parameters were carried out through SSP (single substituent parameter), DSP (dual substituent parameter), and DSP-NLR (dual substituent parameter non-linear resonance) methods, as well as through multiple regression analysis. The presented calculation relative to the polar and resonance effects accounts satisfactorily for substituent effects at uracil carbon atoms. Negative ρ values were found for several correlations (reverse substituent effect). © 2006 Elsevier B.V. All rights reserved. | URI: | https://open.uns.ac.rs/handle/123456789/15954 | ISSN: | 222860 | DOI: | 10.1016/j.molstruc.2006.09.002 |
Appears in Collections: | FTN Publikacije/Publications |
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