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

using model chemistry: MP3=FULL/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP3=FULL/aug-cc-pVTZ
 hartrees
Energy at 0K-225.865789
Energy at 298.15K 
HF Energy-224.878170
Nuclear repulsion energy161.767548
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 MP3=FULL/aug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at MP3=FULL/aug-cc-pVTZ
ABC
0.32461 0.29710 0.15970

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -1.191 0.348 0.000
C2 0.000 1.132 0.000
N3 1.106 0.506 0.000
C4 0.731 -0.894 0.000
C5 -0.760 -0.852 0.000
H6 -0.077 2.203 0.000
H7 1.134 -1.395 0.879
H8 1.134 -1.395 -0.879
H9 -1.420 -1.702 0.000

Atom - Atom Distances (Å)
  N1 C2 N3 C4 C5 H6 H7 H8 H9
N11.42572.30202.28801.27522.16383.03563.03562.0627
C21.42571.27062.15392.12471.07372.90552.90553.1697
N32.30201.27061.44982.30772.06822.09412.09413.3547
C42.28802.15391.44981.49103.20071.08871.08872.2970
C51.27522.12472.30771.49103.13062.15732.15731.0759
H62.16381.07372.06823.20073.13063.89623.89624.1294
H73.03562.90552.09411.08872.15733.89621.75722.7185
H83.03562.90552.09411.08872.15733.89621.75722.7185
H92.06273.16973.35472.29701.07594.12942.71852.7185

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 117.131 N1 C2 H6 119.262
N1 C5 C4 111.369 N1 C5 H9 122.418
C2 N1 C5 103.608 C2 N3 C4 104.511
N3 C2 H6 123.607 N3 C4 C5 103.380
N3 C4 H7 110.357 N3 C4 H8 110.357
C4 C5 H9 126.213 C5 C4 H7 112.563
C5 C4 H8 112.563 H7 C4 H8 107.615
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability