Toh, Pek Lan and Meepripruk, Montha and Lee, Sin Ang and Sulaiman, Shukri and Mohamed Ibrahim, Mohamed Ismail
(2015)
Density Functional Theory Investigations on the Geometric and Electronic Structures of 4–Azidomethyl–6–Isopropyl–2H–Chromen–2–One.
MATEC Web of Conferences, 27 (01003).
pp. 1-5.
ISSN 2261-236X
Abstract
We have employed first principle Density Functional Theory (DFT) investigations to study the physical
and electronic properties of 4–Azidomethyl–6–isopropyl–2H–chromen–2–one, C13H13N3O2. Complete geometry
optimization calculations were carried out to find local energy minimum of the molecular system using the B3LYP
approach with a variety of basis sets. The optimized geometries were then used to determine the HOMO–LUMO gaps,
Mulliken atomic charges, and others. Our calculation results show that the computed geometrical properties of
C13H13N3O2 cluster model are in good agreement with the corresponding measured experimental value. The
calculated energies obtained are close to each other using the B3LYP density functional method combined with a
variety of basis sets. Furthermore, using B3LYP/6–31G** method, the oxygen–attached carbon, C2 atom has the
highest positively charge, with the corresponding value of +0.59. For both oxygen atoms (O1 and O2), the calculated
charge values obtained are about –0.52 and –0.46, respectively.
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