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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-224.873453
Energy at 298.15K-224.877860
HF Energy-224.184784
Nuclear repulsion energy152.492127
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 3305 3305        
2 A1 3291 3291        
3 A1 1594 1594        
4 A1 1353 1353        
5 A1 1166 1166        
6 A1 1017 1017        
7 A1 909 909        
8 A2 847 847        
9 A2 566 566        
10 B1 811 811        
11 B1 760 760        
12 B1 512 512        
13 B2 3279 3279        
14 B2 1551 1551        
15 B2 1321 1321        
16 B2 1236 1236        
17 B2 1030 1030        
18 B2 834 834        

Unscaled Zero Point Vibrational Energy (zpe) 12690.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12690.5 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 ROMP2/6-31G*
ABC
0.35395 0.30327 0.16333

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 1.101
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 2.184
H7 0.000 1.404 -1.731
H8 0.000 -1.404 -1.731

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8
C11.38281.38282.10952.10951.08353.16053.1605
N21.38282.34821.32122.28092.16092.11363.3259
N31.38282.34822.28091.32122.16093.32592.1136
C42.10951.32122.28091.47223.14781.08462.3045
C52.10952.28091.32121.47223.14782.30451.0846
H61.08352.16092.16093.14783.14784.15924.1592
H73.16052.11363.32591.08462.30454.15922.8082
H83.16053.32592.11362.30451.08464.15922.8082

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 102.526 C1 N3 C5 102.526
N2 C1 N3 116.224 N2 C1 H6 121.888
N2 C4 C5 109.362 N2 C4 H7 122.624
N3 C1 H6 121.888 N3 C5 C4 109.362
N3 C5 H8 122.624 C4 C5 H8 128.014
C5 C4 H7 128.014
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability