Abstract
Despite their importance as herbicides, dimethoxypyrimidinylsalicylic acids has been poorly characterized from a physical-chemical point of view. This lack of information has prevented the assessment of their impact in the environment once they are released. In this study, environmentally important properties (free energy of solvation, Henry’s law constant, octanol/air, and octanol/water partition coefficients) of 39 dimethoxypyrimidinylsalicylic derived compounds are calculated by density functional theory (DFT) methods at B3LYP/6-31G(d,p) level of theory using the Poisson-Boltzmann solvation model. These properties have not been reported previously for this family of compounds, neither experimentally or theoretically.

Multiphase distribution of DMPS chemicals in the environmental compartments.


Similar content being viewed by others
References
Stangroom SJ, Lester JN, Collins CD (2000) Abiotic behavior of organic micropollutants in soils and the aquatic environment. A review: I partitioning. Environ Technol 21:845–863
Delgado EJ, Alderete JB (2002) On the calculation of Henry’s law constant of chlorinated benzenes in water from semiempirical quantum chemical methods. J Chem Inf Comput Sci 42:559–563
Delgado EJ, Alderete JB (2003) Prediction of Henry’s law constants of triazine derived herbicides from quantum chemical continuum salvations models. J Chem Inf Comput Sci 43:1226–1230
Cramer CJ (2002) Essentials of computational chemistry: theories and models. Wiley, Chichester
Delgado EJ (2009) DFT calculation of pKa’s for dimethoxypyrimidinylsalicylic based herbicides. Chem Phys Lett 471:133–135
Hyperchem 7.0 (2002) Hypercube Inc, Gainesville
Jaguar, Version 7.0 (2007) Schrodinger, New York
Maestro, Version 8.0 (2007) Schrodinger, New York
Marten B, Kin K, Cortis C, Friesner RA, Murphy RB, Ringnalda MN, Sitkoff D, Honig B (1996) New model for calculation of solvation free energies: correction of self-consistent reaction field continuum dielectric theory for short-range hydrogen-bonding effects. J Phys Chem 100:11775–11788
Qiao Y, Xia S, Ma P (2008) Octanol/water partition coefficient of substituted benzene derivates containing halogens and carboxyls: Determination using the shake-flask meted ans estimation using the fragment meted. J Chem Eng Data 53:280–282
Meylan WM, Howard PH (2005) Estimating octanol-air partition coefficients with octanol-water partition coefficients and Henry’s law constants. Chemosphere 61:640–644
Acknowledgments
The author acknowledges financial support from Dirección de Investigación, Universidad de Concepción, Grant N0 207.022.023-1.0
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Delgado, E.J. Theoretical calculation of partition coefficients of dimethoxypyrimidinylsalicylic acids. J Mol Model 16, 1421–1425 (2010). https://doi.org/10.1007/s00894-010-0668-x
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00894-010-0668-x


