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

using model chemistry: ROMP2/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2B1
Energy calculated at ROMP2/6-311G**
 hartrees
Energy at 0K-224.971508
Energy at 298.15K-224.975935
HF Energy-224.234657
Nuclear repulsion energy152.539677
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 ROMP2/6-311G**
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 3286 3286        
2 A1 3265 3265        
3 A1 1583 1583        
4 A1 1331 1331        
5 A1 1161 1161        
6 A1 996 996        
7 A1 903 903        
8 A2 866 866        
9 A2 564 564        
10 B1 814 814        
11 B1 766 766        
12 B1 506 506        
13 B2 3253 3253        
14 B2 1532 1532        
15 B2 1297 1297        
16 B2 1219 1219        
17 B2 1023 1023        
18 B2 829 829        

Unscaled Zero Point Vibrational Energy (zpe) 12596.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12596.3 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 ROMP2/6-311G**
ABC
0.35510 0.30252 0.16335

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROMP2/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.099
N2 0.000 1.174 0.370
N3 0.000 -1.174 0.370
C4 0.000 0.739 -0.875
C5 0.000 -0.739 -0.875
H6 0.000 0.000 2.181
H7 0.000 1.407 -1.728
H8 0.000 -1.407 -1.728

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8
C11.38241.38242.10752.10751.08203.15823.1582
N21.38242.34871.31832.28252.15872.11113.3265
N31.38242.34872.28251.31832.15873.32652.1111
C42.10751.31832.28251.47823.14371.08402.3097
C52.10752.28251.31831.47823.14372.30971.0840
H61.08202.15872.15873.14373.14374.15504.1550
H73.15822.11113.32651.08402.30974.15502.8138
H83.15823.32652.11112.30971.08404.15502.8138

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 102.561 C1 N3 C5 102.561
N2 C1 N3 116.320 N2 C1 H6 121.840
N2 C4 C5 109.279 N2 C4 H7 122.693
N3 C1 H6 121.840 N3 C5 C4 109.279
N3 C5 H8 122.693 C4 C5 H8 128.028
C5 C4 H7 128.028
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability