International Journal of Engineering, Science and Mathematics

  • Year: 2022
  • Volume: 11
  • Issue: 7

Molecular geometry and thermodynamic parameters of 6-amino-1,3-dipropyl uracil by using hartree fock and density functional theory

  • Author:
  • Anju Singh1, Jyoti Chaudhary2, Lalit Kumar3
  • Total Page Count: 10
  • DOI:
  • Page Number: 18 to 27

1Dept. of Chemistry, Shaheed Mangal Pandey Govt. Girls PG College, Meerut, U.P.

2Dept. of Physics, Shaheed Mangal Pandey Govt. Girls PG College, Meerut, U.P.

3Dept. of Physics, DAV College, Muzaffarnagar, U.P.

Abstract

Quantum mechanical calculations of energies, geometries and thermodynamic parameters of 6-Amino-1,3-Dipropyl Uracil were carried out by using ab initio HF theory with 6-31+G(d,p) and 6-311++G(d,p) basis sets and density functional theory (DFT/B3LYP) with 631+G(d,p) basis set. The optimized geometrical parameters such as bond length, bond angles etc obtained by HF and DFT calculations are in good agreement with each other. The thermodynamic parameters such as total thermal energy, Enthalpy heat capacity, entropy have also been computed in the temperature range 200-1500 K by using the standard expressions under the rigid rotator harmonic oscillator approximation.

Keywords

HF, DFT, 6-Amino-1, 3-Dipropyl Uracil etc