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

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

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2B1
Energy calculated at MP2/6-31+G**
 hartrees
Energy at 0K-224.896703
Energy at 298.15K 
HF Energy-224.213453
Nuclear repulsion energy153.974415
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 MP2/6-31+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 3340 3142 0.77      
2 A1 3329 3132 18.25      
3 A1 1497 1408 60.90      
4 A1 1416 1332 88.90      
5 A1 1235 1162 57.48      
6 A1 1083 1018 19.26      
7 A1 942 886 1.05      
8 A2 972 915 0.00      
9 A2 592 557 0.00      
10 B1 959 903 2.49      
11 B1 884 832 17.94      
12 B1 527 495 43.96      
13 B2 3313 3116 0.52      
14 B2 1678 1578 83.09      
15 B2 1332 1253 0.22      
16 B2 1237 1163 45.17      
17 B2 997 938 40.87      
18 B2 284i 268i 0.23      

Unscaled Zero Point Vibrational Energy (zpe) 12524.0 cm-1
Scaled (by 0.9406) Zero Point Vibrational Energy (zpe) 11780.0 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 MP2/6-31+G**
ABC
0.35996 0.31063 0.16674

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.087
N2 0.000 1.165 0.370
N3 0.000 -1.165 0.370
C4 0.000 0.719 -0.869
C5 0.000 -0.719 -0.869
H6 0.000 0.000 2.166
H7 0.000 1.379 -1.724
H8 0.000 -1.379 -1.724

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8
C11.36801.36802.08372.08371.07913.13073.1307
N21.36802.33071.31732.25532.14062.10503.2954
N31.36802.33072.25531.31732.14063.29542.1050
C42.08371.31732.25531.43773.11891.08002.2654
C52.08372.25531.31731.43773.11892.26541.0800
H61.07912.14062.14063.11893.11894.12694.1269
H73.13072.10503.29541.08002.26544.12692.7582
H83.13073.29542.10502.26541.08004.12692.7582

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 101.771 C1 N3 C5 101.771
N2 C1 N3 116.834 N2 C1 H6 121.583
N2 C4 C5 109.812 N2 C4 H7 122.503
N3 C1 H6 121.583 N3 C5 C4 109.812
N3 C5 H8 122.503 C4 C5 H8 127.685
C5 C4 H7 127.685
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability