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

using model chemistry: MP3/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 MP3/cc-pVDZ
 hartrees
Energy at 0K-225.470691
Energy at 298.15K-225.476711
HF Energy-224.741021
Nuclear repulsion energy166.029858
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/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 3294 3122 9.11      
2 A1 3134 2970 0.31      
3 A1 1766 1674 18.98      
4 A1 1455 1379 0.12      
5 A1 1413 1340 19.27      
6 A1 1290 1222 3.31      
7 A1 1055 1000 1.01      
8 A1 950 901 15.46      
9 A2 1165 1104 0.00      
10 A2 912 864 0.00      
11 A2 539 511 0.00      
12 B1 3188 3022 0.05      
13 B1 1026 972 22.98      
14 B1 831 788 5.70      
15 B1 349 331 33.26      
16 B2 3277 3107 5.82      
17 B2 1828 1733 0.05      
18 B2 1449 1374 40.92      
19 B2 1260 1194 1.62      
20 B2 1103 1046 26.23      
21 B2 947 897 67.29      

Unscaled Zero Point Vibrational Energy (zpe) 16114.1 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 15274.5 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/cc-pVDZ
ABC
0.36004 0.30093 0.16932

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.209
N2 0.000 0.997 0.282
N3 0.000 -0.997 0.282
C4 0.000 0.732 -0.951
C5 0.000 -0.732 -0.951
H6 -0.902 0.000 1.840
H7 0.902 0.000 1.840
H8 0.000 1.489 -1.737
H9 0.000 -1.489 -1.737

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.36191.36192.28072.28071.10061.10063.30093.3009
N21.36191.99471.26102.12372.05832.05832.07773.2024
N31.36191.99472.12371.26102.05832.05833.20242.0777
C42.28071.26102.12371.46393.02333.02331.09112.3556
C52.28072.12371.26101.46393.02333.02332.35561.0911
H61.10062.05832.05833.02333.02331.80323.97833.9783
H71.10062.05832.05833.02333.02331.80323.97833.9783
H83.30092.07773.20241.09112.35563.97833.97832.9771
H93.30093.20242.07772.35561.09113.97833.97832.9771

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 120.768 C1 N3 C5 120.768
N2 C1 N3 94.165 N2 C1 H6 112.987
N2 C1 H7 112.987 N2 C4 C5 102.150
N2 C4 H8 123.946 N3 C1 H6 112.987
N3 C1 H7 112.987 N3 C5 C4 102.150
N3 C5 H9 123.946 C4 C5 H9 133.905
C5 C4 H8 133.905 H6 C1 H7 110.009
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability