Research Article

Spectroscopic Investigations, DFT Calculations, and Molecular Docking Studies of the Anticonvulsant (2E)-2-[3-(1H-Imidazol-1-yl)-1-phenylpropylidene]-N-(4-methylphenyl)hydrazinecarboxamide

Table 2

Second-order perturbation theory analysis of Fock matrix in natural bond orbital (NBO) basis for (2E)-IPPMP.

Donor ()Occupancy ()Acceptor ()Occupancy ()
kcal/mol

(a.u)

(a.u)

(N10)1.55554(C11-C12)1.8568430.620.290.087
(N10)1.55554(N13-C14)1.8672146.480.280.103
(N13)1.9234(C11-C12)1.984195.10.950.063
(N15)1.92552(C7-C8)1.9779211.40.790.086
(N15)1.92552(N16-H39)1.976862.020.770.036
(N16)1.79578(C7-N15)1.941629.060.360.052
(O18)1.83834(N16-C17)1.9824526.840.630.118
(O18)1.83834(C17-N19)1.9864124.580.690.119
(O18)1.83834(C25-H44)1.977250.780.730.022
(N19)1.70657(C20-C25)1.6430930.720.310.089
π(C2-C3)1.6583(C4-C5)1.6496920.620.280.069
π(C4-C5)1.64969(C1-C6)1.6600119.970.290.067
π(C11-C12)1.85684(N13-C14)1.8672115.010.280.061
π(N13-C14)1.86721(C11-C12)1.8568421.590.330.078
π(C20-C25)1.64309(C21-C22)1.7075219.290.280.066
π(C20-C25)1.64309(C23-C24)1.6487220.410.30.069
π(C23-C24)1.64872(C20-C25)1.6430920.680.270.068
π(C23-C24)1.64872(C21-C22)1.7075222.110.270.069
π(N13-C14)1.86721(C11-C12)1.85684107.40.010.06
σ(C26-H46)1.98674(C23-C24)1.648720.840.540.021
σ(C26-H47)1.97658(C23-C24)1.648724.340.540.047
π(C20-C25)1.64309(C23-C24)1.64872254.220.010.082
π(C21-C22)1.70752(C23-C24)1.64872230.930.010.084

(2) means energy of hyperconjugative interactions. Energy difference between donor and acceptor and NBO. is the Fock matrix element between and NBO.