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All results from a given calculation for C3H4N2 (4H-Imidazole)

using model chemistry: MP4=FULL/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP4=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-225.650675
Energy at 298.15K 
HF Energy-224.823868
Nuclear repulsion energy158.789650
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at MP4=FULL/aug-cc-pVDZ
Rotational Constants (cm-1) from geometry optimized at MP4=FULL/aug-cc-pVDZ
ABC
0.31329 0.28622 0.15396

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -1.215 0.366 0.000
C2 0.000 1.149 0.000
N3 1.134 0.505 0.000
C4 0.738 -0.913 0.000
C5 -0.773 -0.865 0.000
H6 -0.069 2.240 0.000
H7 1.149 -1.421 0.893
H8 1.149 -1.421 -0.893
H9 -1.452 -1.725 0.000

Atom - Atom Distances (Å)
  N1 C2 N3 C4 C5 H6 H7 H8 H9
N11.44542.35272.33491.30842.19693.09473.09472.1042
C21.44541.30372.19062.15761.09332.95332.95333.2198
N32.35271.30371.47282.34802.11092.12322.12323.4143
C42.33492.19061.47281.51173.25521.10601.10602.3355
C51.30842.15762.34801.51173.18442.19032.19031.0953
H62.19691.09332.11093.25523.18443.96033.96034.1993
H73.09472.95332.12321.10602.19033.96031.78552.7661
H83.09472.95332.12321.10602.19033.96031.78552.7661
H92.10423.21983.41432.33551.09534.19932.76612.7661

picture of 4H-Imidazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 N3 117.605 N1 C2 H6 119.196
N1 C5 C4 111.576 N1 C5 H9 121.930
C2 N1 C5 103.047 C2 N3 C4 104.016
N3 C2 H6 123.198 N3 C4 C5 103.755
N3 C4 H7 110.027 N3 C4 H8 110.027
C4 C5 H9 126.494 C5 C4 H7 112.675
C5 C4 H8 112.675 H7 C4 H8 107.653
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability