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All results from a given calculation for C3H4N2 (2H-Imidazole)

using model chemistry: CID/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CID/6-31G*
 hartrees
Energy at 0K-225.330402
Energy at 298.15K-225.336517
HF Energy-224.725600
Nuclear repulsion energy167.331671
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 CID/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3371 3113 11.01      
2 A1 3200 2956 0.39      
3 A1 1837 1697 25.56      
4 A1 1527 1411 3.83      
5 A1 1480 1367 14.98      
6 A1 1314 1214 3.40      
7 A1 1097 1013 1.50      
8 A1 989 914 13.95      
9 A2 1216 1123 0.00      
10 A2 956 883 0.00      
11 A2 565 522 0.00      
12 B1 3249 3001 0.43      
13 B1 1082 1000 23.20      
14 B1 871 805 5.15      
15 B1 378 349 41.70      
16 B2 3355 3099 7.68      
17 B2 1905 1759 0.06      
18 B2 1497 1383 35.11      
19 B2 1319 1218 1.38      
20 B2 1140 1053 38.06      
21 B2 973 899 69.63      

Unscaled Zero Point Vibrational Energy (zpe) 16659.9 cm-1
Scaled (by 0.9237) Zero Point Vibrational Energy (zpe) 15388.7 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at CID/6-31G*
ABC
0.36370 0.30703 0.17193

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.199
N2 0.000 0.997 0.278
N3 0.000 -0.997 0.278
C4 0.000 0.725 -0.940
C5 0.000 -0.725 -0.940
H6 -0.892 0.000 1.823
H7 0.892 0.000 1.823
H8 0.000 1.462 -1.726
H9 0.000 -1.462 -1.726

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.35731.35732.25812.25811.08831.08833.26963.2696
N21.35731.99381.24762.10872.04352.04352.05673.1718
N31.35731.99382.10871.24762.04352.04353.17182.0567
C42.25811.24762.10871.44952.99192.99191.07762.3237
C52.25812.10871.24761.44952.99192.99192.32371.0776
H61.08832.04352.04352.99192.99191.78373.94003.9400
H71.08832.04352.04352.99192.99191.78373.94003.9400
H83.26962.05673.17181.07762.32373.94003.94002.9241
H93.26963.17182.05672.32371.07763.94003.94002.9241

picture of 2H-Imidazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C4 120.138 C1 N3 C5 120.138
N2 C1 N3 94.526 N2 C1 H6 112.890
N2 C1 H7 112.890 N2 C4 C5 102.599
N2 C4 H8 124.228 N3 C1 H6 112.890
N3 C1 H7 112.890 N3 C5 C4 102.599
N3 C5 H9 124.228 C4 C5 H9 133.173
C5 C4 H8 133.173 H6 C1 H7 110.058
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability