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

using model chemistry: CID/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-225.541871
Energy at 298.15K-225.548025
HF Energy-224.805596
Nuclear repulsion energy167.980990
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/6-311+G(3df,2p)
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 3354 3099 10.13      
2 A1 3195 2952 0.20      
3 A1 1815 1677 28.51      
4 A1 1505 1390 2.73      
5 A1 1470 1358 24.57      
6 A1 1297 1198 2.03      
7 A1 1084 1002 0.94      
8 A1 985 910 12.10      
9 A2 1222 1129 0.00      
10 A2 993 918 0.00      
11 A2 571 528 0.00      
12 B1 3241 2995 0.21      
13 B1 1078 996 24.31      
14 B1 883 816 4.36      
15 B1 382 353 37.11      
16 B2 3340 3086 2.72      
17 B2 1885 1741 0.02      
18 B2 1485 1373 37.16      
19 B2 1321 1221 2.46      
20 B2 1135 1048 42.26      
21 B2 972 898 60.64      

Unscaled Zero Point Vibrational Energy (zpe) 16604.8 cm-1
Scaled (by 0.924) Zero Point Vibrational Energy (zpe) 15342.9 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/6-311+G(3df,2p)
ABC
0.36457 0.31067 0.17320

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.192
N2 0.000 0.997 0.276
N3 0.000 -0.997 0.276
C4 0.000 0.724 -0.934
C5 0.000 -0.724 -0.934
H6 -0.887 0.000 1.813
H7 0.887 0.000 1.813
H8 0.000 1.454 -1.718
H9 0.000 -1.454 -1.718

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.35401.35402.24582.24581.08241.08243.25353.2535
N21.35401.99301.23962.10292.03522.03522.04553.1594
N31.35401.99302.10291.23962.03522.03523.15942.0455
C42.24581.23962.10291.44782.97522.97521.07192.3153
C52.24582.10291.23961.44782.97522.97522.31531.0719
H61.08242.03522.03522.97522.97521.77443.92013.9201
H71.08242.03522.03522.97522.97521.77443.92013.9201
H83.25352.04553.15941.07192.31533.92013.92012.9090
H93.25353.15942.04552.31531.07193.92013.92012.9090

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 119.906 C1 N3 C5 119.906
N2 C1 N3 94.779 N2 C1 H6 112.823
N2 C1 H7 112.823 N2 C4 C5 102.705
N2 C4 H8 124.329 N3 C1 H6 112.823
N3 C1 H7 112.823 N3 C5 C4 102.705
N3 C5 H9 124.329 C4 C5 H9 132.966
C5 C4 H8 132.966 H6 C1 H7 110.090
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability