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

using model chemistry: MP3/6-31+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 MP3/6-31+G**
 hartrees
Energy at 0K-225.483270
Energy at 298.15K-225.489270
HF Energy-224.738823
Nuclear repulsion energy166.530923
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 MP3/6-31+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 3348 3115 8.71      
2 A1 3170 2950 0.03      
3 A1 1764 1641 22.45      
4 A1 1487 1384 4.30      
5 A1 1448 1348 19.17      
6 A1 1289 1200 2.69      
7 A1 1070 995 0.59      
8 A1 959 893 10.52      
9 A2 1177 1095 0.00      
10 A2 874 813 0.00      
11 A2 528 492 0.00      
12 B1 3222 2998 0.14      
13 B1 1045 972 25.14      
14 B1 830 772 8.23      
15 B1 343 319 38.64      
16 B2 3333 3101 3.21      
17 B2 1831 1704 0.07      
18 B2 1458 1357 36.49      
19 B2 1289 1199 2.02      
20 B2 1112 1035 36.47      
21 B2 948 882 57.63      

Unscaled Zero Point Vibrational Energy (zpe) 16261.7 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 15131.5 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 MP3/6-31+G**
ABC
0.36259 0.30241 0.17024

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31+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 0.281
N3 0.000 -0.997 0.281
C4 0.000 0.727 -0.949
C5 0.000 -0.727 -0.949
H6 -0.893 0.000 1.831
H7 0.893 0.000 1.831
H8 0.000 1.469 -1.729
H9 0.000 -1.469 -1.729

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.36191.36192.27672.27671.08851.08853.28443.2844
N21.36191.99471.25962.11802.04782.04782.06483.1819
N31.36191.99472.11801.25962.04782.04783.18192.0648
C42.27671.25962.11801.45353.00883.00881.07682.3303
C52.27672.11801.25961.45353.00883.00882.33031.0768
H61.08852.04782.04783.00883.00881.78633.95323.9532
H71.08852.04782.04783.00883.00881.78633.95323.9532
H83.28442.06483.18191.07682.33033.95323.95322.9383
H93.28443.18192.06482.33031.07683.95323.95322.9383

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 120.511 C1 N3 C5 120.511
N2 C1 N3 94.168 N2 C1 H6 112.907
N2 C1 H7 112.907 N2 C4 C5 102.405
N2 C4 H8 124.009 N3 C1 H6 112.907
N3 C1 H7 112.907 N3 C5 C4 102.405
N3 C5 H9 124.009 C4 C5 H9 133.586
C5 C4 H8 133.586 H6 C1 H7 110.272
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability