Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, International Journal of Research in Chemistry and Environment called Quantum mechanical study of coordination ability of amides using eigen value parameters, Author is Ahmad, Kaleem; Dixit, Vivek, which mentions a compound: 1452-77-3, SMILESS is O=C(N)C1=NC=CC=C1, Molecular C6H6N2O, Related Products of 1452-77-3.
It is well known fact that the bonding occurs at oxygen atom in the Amides compounds In order to prove this fact we have considered eighteen Amides compounds Present study deals to calculate their Eigen value using Quantum Mech. descriptors via Cache software. With the help of Eigen values, the concentrations of electrons on oxygen and nitrogen atoms of Amides compounds have been calculated In Amides compounds, the sum of contributions of p-orbitals of oxygen atom in the formation of MOs is smaller as compared to other atoms. This indicates that the bonding takes place at oxygen atom.
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Reference:
Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem