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All results from a given calculation for C3H3N2 (imidazolyl radical)

using model chemistry: MP2/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2B1
Energy calculated at MP2/6-31G**
 hartrees
Energy at 0K-224.881701
Energy at 298.15K 
HF Energy-224.206704
Nuclear repulsion energy154.136875
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 MP2/6-31G**
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 3336 3124 1.14      
2 A1 3327 3115 22.77      
3 A1 1515 1419 56.21      
4 A1 1422 1332 81.26      
5 A1 1231 1153 55.68      
6 A1 1087 1018 23.20      
7 A1 944 884 1.94      
8 A2 1005 942 0.00      
9 A2 609 570 0.00      
10 B1 964 903 3.90      
11 B1 895 838 8.85      
12 B1 535 501 42.73      
13 B2 3310 3100 0.08      
14 B2 1692 1584 57.12      
15 B2 1339 1254 0.05      
16 B2 1242 1163 38.38      
17 B2 998 934 44.97      
18 B2 303i 284i 0.13      

Unscaled Zero Point Vibrational Energy (zpe) 12573.9 cm-1
Scaled (by 0.9365) Zero Point Vibrational Energy (zpe) 11775.4 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 MP2/6-31G**
ABC
0.36175 0.31046 0.16707

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.083
N2 0.000 1.166 0.370
N3 0.000 -1.166 0.370
C4 0.000 0.718 -0.866
C5 0.000 -0.718 -0.866
H6 0.000 0.000 2.163
H7 0.000 1.377 -1.723
H8 0.000 -1.377 -1.723

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8
C11.36731.36732.07792.07791.07953.12583.1258
N21.36732.33241.31462.25392.13912.10323.2932
N31.36732.33242.25391.31462.13913.29322.1032
C42.07791.31462.25391.43703.11331.08022.2634
C52.07792.25391.31461.43703.11332.26341.0802
H61.07952.13912.13913.11333.11334.12254.1225
H73.12582.10323.29321.08022.26344.12252.7531
H83.12583.29322.10322.26341.08024.12252.7531

picture of imidazolyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C4 101.553 C1 N3 C5 101.553
N2 C1 N3 117.068 N2 C1 H6 121.466
N2 C4 C5 109.913 N2 C4 H7 122.555
N3 C1 H6 121.466 N3 C5 C4 109.913
N3 C5 H8 122.555 C4 C5 H8 127.532
C5 C4 H7 127.532
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability