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

using model chemistry: CCSD/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/aug-cc-pVTZ
 hartrees
Energy at 0K-225.777880
Energy at 298.15K 
HF Energy-224.876920
Nuclear repulsion energy160.872109
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/aug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at CCSD/aug-cc-pVTZ
ABC
0.32117 0.29370 0.15791

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -1.199 0.352 0.000
C2 0.000 1.136 0.000
N3 1.113 0.507 0.000
C4 0.735 -0.901 0.000
C5 -0.763 -0.855 0.000
H6 -0.076 2.214 0.000
H7 1.139 -1.404 0.881
H8 1.139 -1.404 -0.881
H9 -1.428 -1.709 0.000

Atom - Atom Distances (Å)
  N1 C2 N3 C4 C5 H6 H7 H8 H9
N11.43302.31762.30471.28362.17463.05463.05462.0734
C21.43301.27842.16542.13261.08012.92052.92053.1831
N32.31761.27841.45782.31872.07952.10552.10553.3714
C42.30472.16541.45781.49893.21811.09261.09262.3089
C51.28362.13262.31871.49893.14492.16712.16711.0818
H62.17461.08012.07953.21813.14493.91713.91714.1489
H73.05462.92052.10551.09262.16713.91711.76272.7307
H83.05462.92052.10551.09262.16713.91711.76272.7307
H92.07343.18313.37142.30891.08184.14892.73072.7307

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 117.357 N1 C2 H6 119.165
N1 C5 C4 111.610 N1 C5 H9 122.225
C2 N1 C5 103.305 C2 N3 C4 104.444
N3 C2 H6 123.478 N3 C4 C5 103.284
N3 C4 H7 110.468 N3 C4 H8 110.468
C4 C5 H9 126.166 C5 C4 H7 112.543
C5 C4 H8 112.543 H7 C4 H8 107.540
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability