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

using model chemistry: B2PLYP=FULL/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B2PLYP=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-225.930019
Energy at 298.15K-225.936023
HF Energy-225.679375
Nuclear repulsion energy166.121473
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 B2PLYP=FULL/aug-cc-pVDZ
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 3257 3132 12.27      
2 A1 3088 2970 0.21      
3 A1 1683 1618 21.96      
4 A1 1414 1360 1.31      
5 A1 1386 1333 27.90      
6 A1 1260 1212 4.25      
7 A1 1037 997 0.59      
8 A1 929 894 11.25      
9 A2 1141 1098 0.00      
10 A2 906 871 0.00      
11 A2 540 519 0.00      
12 B1 3136 3016 1.09      
13 B1 1004 966 22.46      
14 B1 824 793 6.11      
15 B1 359 346 36.44      
16 B2 3242 3118 3.25      
17 B2 1749 1682 0.26      
18 B2 1386 1333 37.52      
19 B2 1236 1189 2.09      
20 B2 1082 1040 35.49      
21 B2 929 894 64.62      

Unscaled Zero Point Vibrational Energy (zpe) 15793.6 cm-1
Scaled (by 0.9618) Zero Point Vibrational Energy (zpe) 15190.3 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 B2PLYP=FULL/aug-cc-pVDZ
ABC
0.36133 0.30078 0.16952

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.208
N2 0.000 0.997 0.284
N3 0.000 -0.997 0.284
C4 0.000 0.729 -0.952
C5 0.000 -0.729 -0.952
H6 -0.899 0.000 1.839
H7 0.899 0.000 1.839
H8 0.000 1.482 -1.737
H9 0.000 -1.482 -1.737

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.35961.35962.27972.27971.09851.09853.29663.2966
N21.35961.99431.26452.12292.05482.05482.07783.1980
N31.35961.99432.12291.26452.05482.05483.19802.0778
C42.27971.26452.12291.45803.02183.02181.08742.3459
C52.27972.12291.26451.45803.02183.02182.34591.0874
H61.09852.05482.05483.02183.02181.79783.97403.9740
H71.09852.05482.05483.02183.02181.79783.97403.9740
H83.29662.07783.19801.08742.34593.97403.97402.9636
H93.29663.19802.07782.34591.08743.97403.97402.9636

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 120.586 C1 N3 C5 120.586
N2 C1 N3 94.344 N2 C1 H6 113.001
N2 C1 H7 113.001 N2 C4 C5 102.242
N2 C4 H8 123.948 N3 C1 H6 113.001
N3 C1 H7 113.001 N3 C5 C4 102.242
N3 C5 H9 123.948 C4 C5 H9 133.810
C5 C4 H8 133.810 H6 C1 H7 109.828
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability