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

using model chemistry: CISD/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 CISD/6-31G
 hartrees
Energy at 0K-225.031495
Energy at 298.15K-225.037610
HF Energy-224.601678
Nuclear repulsion energy165.414510
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 CISD/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 3352 3144 7.00      
2 A1 3167 2970 0.06      
3 A1 1754 1645 28.71      
4 A1 1534 1439 13.21      
5 A1 1433 1344 5.57      
6 A1 1286 1206 5.48      
7 A1 1068 1002 8.70      
8 A1 982 921 8.63      
9 A2 1201 1126 0.00      
10 A2 893 838 0.00      
11 A2 570 535 0.00      
12 B1 3216 3016 0.10      
13 B1 1095 1027 21.23      
14 B1 844 792 13.06      
15 B1 397 373 52.58      
16 B2 3335 3127 7.06      
17 B2 1813 1700 0.36      
18 B2 1431 1342 13.86      
19 B2 1316 1235 4.13      
20 B2 1113 1044 41.57      
21 B2 994 932 70.29      

Unscaled Zero Point Vibrational Energy (zpe) 16397.7 cm-1
Scaled (by 0.9378) Zero Point Vibrational Energy (zpe) 15377.8 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 CISD/6-31G
ABC
0.35930 0.29681 0.16775

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.224
N2 0.000 0.998 0.281
N3 0.000 -0.998 0.281
C4 0.000 0.736 -0.958
C5 0.000 -0.736 -0.958
H6 -0.894 0.000 1.848
H7 0.894 0.000 1.848
H8 0.000 1.476 -1.741
H9 0.000 -1.476 -1.741

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.37291.37292.30222.30221.09031.09033.31173.3117
N21.37291.99671.26642.13152.06142.06142.07793.1955
N31.37291.99672.13151.26642.06142.06143.19552.0779
C42.30221.26642.13151.47213.03493.03491.07752.3466
C52.30222.13151.26641.47213.03493.03492.34661.0775
H61.09032.06142.06143.03493.03491.78823.98193.9819
H71.09032.06142.06143.03493.03491.78823.98193.9819
H83.31172.07793.19551.07752.34663.98193.98192.9518
H93.31173.19552.07792.34661.07753.98193.98192.9518

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 121.396 C1 N3 C5 121.396
N2 C1 N3 93.304 N2 C1 H6 113.130
N2 C1 H7 113.130 N2 C4 C5 101.952
N2 C4 H8 124.684 N3 C1 H6 113.130
N3 C1 H7 113.130 N3 C5 C4 101.952
N3 C5 H9 124.684 C4 C5 H9 133.364
C5 C4 H8 133.364 H6 C1 H7 110.182
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability