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

using model chemistry: MP2=FULL/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2=FULL/6-31+G**
 hartrees
Energy at 0K-225.488955
Energy at 298.15K-225.494915
HF Energy-224.737496
Nuclear repulsion energy166.351634
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 MP2=FULL/6-31+G**
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 3331 3129 8.44      
2 A1 3155 2963 2.08      
3 A1 1682 1580 22.54      
4 A1 1458 1369 9.17      
5 A1 1419 1333 17.79      
6 A1 1276 1199 4.04      
7 A1 1063 998 0.49      
8 A1 937 880 8.63      
9 A2 1158 1087 0.00      
10 A2 863 811 0.00      
11 A2 523 491 0.00      
12 B1 3216 3020 1.83      
13 B1 1023 960 23.85      
14 B1 821 771 8.03      
15 B1 338 317 40.17      
16 B2 3318 3116 1.79      
17 B2 1752 1646 0.19      
18 B2 1413 1327 36.72      
19 B2 1268 1191 1.12      
20 B2 1100 1033 40.09      
21 B2 935 878 58.93      

Unscaled Zero Point Vibrational Energy (zpe) 16023.7 cm-1
Scaled (by 0.9392) Zero Point Vibrational Energy (zpe) 15049.5 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 MP2=FULL/6-31+G**
ABC
0.36333 0.30096 0.16996

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31+G**

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 0.285
N3 0.000 -0.997 0.285
C4 0.000 0.724 -0.954
C5 0.000 -0.724 -0.954
H6 -0.894 0.000 1.830
H7 0.894 0.000 1.830
H8 0.000 1.471 -1.730
H9 0.000 -1.471 -1.730

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.35851.35852.27972.27971.08921.08923.28613.2861
N21.35851.99401.26862.12062.04432.04432.07063.1867
N31.35851.99402.12061.26862.04432.04433.18672.0706
C42.27971.26862.12061.44813.01193.01191.07772.3287
C52.27972.12061.26861.44813.01193.01192.32871.0777
H61.08922.04432.04433.01193.01191.78883.95453.9545
H71.08922.04432.04433.01193.01191.78883.95453.9545
H83.28612.07063.18671.07772.32873.95453.95452.9427
H93.28613.18672.07062.32871.07773.95453.95452.9427

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 120.362 C1 N3 C5 120.362
N2 C1 N3 94.427 N2 C1 H6 112.811
N2 C1 H7 112.811 N2 C4 C5 102.424
N2 C4 H8 123.678 N3 C1 H6 112.811
N3 C1 H7 112.811 N3 C5 C4 102.424
N3 C5 H9 123.678 C4 C5 H9 133.897
C5 C4 H8 133.897 H6 C1 H7 110.395
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability