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

using model chemistry: ROMP2/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2B1
Energy calculated at ROMP2/6-31G**
 hartrees
Energy at 0K-224.896773
Energy at 298.15K-224.901201
HF Energy-224.190492
Nuclear repulsion energy152.585897
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 ROMP2/6-31G**
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 3334 3334        
2 A1 3321 3321        
3 A1 1598 1598        
4 A1 1356 1356        
5 A1 1165 1165        
6 A1 1016 1016        
7 A1 908 908        
8 A2 858 858        
9 A2 565 565        
10 B1 818 818        
11 B1 767 767        
12 B1 513 513        
13 B2 3308 3308        
14 B2 1556 1556        
15 B2 1326 1326        
16 B2 1237 1237        
17 B2 1030 1030        
18 B2 832 832        

Unscaled Zero Point Vibrational Energy (zpe) 12753.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12753.8 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 ROMP2/6-31G**
ABC
0.35458 0.30334 0.16348

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROMP2/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.100
N2 0.000 1.174 0.370
N3 0.000 -1.174 0.370
C4 0.000 0.736 -0.876
C5 0.000 -0.736 -0.876
H6 0.000 0.000 2.179
H7 0.000 1.399 -1.728
H8 0.000 -1.399 -1.728

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8
C11.38271.38272.10842.10841.07863.15523.1552
N21.38272.34891.32082.28082.15642.11023.3204
N31.38272.34892.28081.32082.15643.32042.1102
C42.10841.32082.28081.47193.14181.07982.2988
C52.10842.28081.32081.47193.14182.29881.0798
H61.07862.15642.15643.14183.14184.14964.1496
H73.15522.11023.32041.07982.29884.14962.7981
H83.15523.32042.11022.29881.07984.14962.7981

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 102.470 C1 N3 C5 102.470
N2 C1 N3 116.283 N2 C1 H6 121.858
N2 C4 C5 109.389 N2 C4 H7 122.729
N3 C1 H6 121.858 N3 C5 C4 109.389
N3 C5 H8 122.729 C4 C5 H8 127.882
C5 C4 H7 127.882
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability