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

using model chemistry: CCSD=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 CCSD=FULL/aug-cc-pVTZ
 hartrees
Energy at 0K-225.868197
Energy at 298.15K 
HF Energy-224.877888
Nuclear repulsion energy161.578723
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 CCSD=FULL/aug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at CCSD=FULL/aug-cc-pVTZ
ABC
0.32382 0.29652 0.15935

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -1.193 0.350 0.000
C2 0.000 1.133 0.000
N3 1.108 0.505 0.000
C4 0.731 -0.896 0.000
C5 -0.760 -0.852 0.000
H6 -0.076 2.205 0.000
H7 1.134 -1.398 0.880
H8 1.134 -1.398 -0.880
H9 -1.422 -1.703 0.000

Atom - Atom Distances (Å)
  N1 C2 N3 C4 C5 H6 H7 H8 H9
N11.42632.30562.29221.27802.16523.04023.04022.0659
C21.42631.27332.15642.12551.07532.90892.90893.1719
N32.30561.27331.45052.30872.07182.09602.09603.3571
C42.29222.15641.45051.49193.20451.09001.09002.2988
C51.27802.12552.30871.49193.13312.15862.15861.0775
H62.16521.07532.07183.20453.13313.90103.90104.1334
H73.04022.90892.09601.09002.15863.90101.75992.7200
H83.04022.90892.09601.09002.15863.90101.75992.7200
H92.06593.17193.35712.29881.07754.13342.72002.7200

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 117.189 N1 C2 H6 119.224
N1 C5 C4 111.462 N1 C5 H9 122.358
C2 N1 C5 103.482 C2 N3 C4 104.498
N3 C2 H6 123.587 N3 C4 C5 103.369
N3 C4 H7 110.382 N3 C4 H8 110.382
C4 C5 H9 126.180 C5 C4 H7 112.520
C5 C4 H8 112.520 H7 C4 H8 107.662
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability