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

using model chemistry: G2

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2B1
Energy calculated at G2
 hartrees
Energy at 0K-225.178297
Energy at 298.15K-225.173583
HF Energy-224.203522
Nuclear repulsion energy154.396471
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 HF/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 3452 3253 7.75      
2 A1 3435 3236 12.65      
3 A1 1602 1510 28.63      
4 A1 1404 1323 70.27      
5 A1 1235 1164 25.17      
6 A1 1049 988 0.36      
7 A1 991 934 4.19      
8 A2 928 874 0.00      
9 A2 603 568 0.00      
10 B1 906 853 0.50      
11 B1 831 783 19.91      
12 B1 609 574 39.12      
13 B2 3422 3224 2.97      
14 B2 1652 1556 21.75      
15 B2 1411 1329 0.01      
16 B2 1244 1172 16.08      
17 B2 1133 1068 44.78      
18 B2 904 851 6.08      

Unscaled Zero Point Vibrational Energy (zpe) 13405.0 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 12630.2 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=FULL/6-31G*
ABC
0.36157 0.31098 0.16719

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.084
N2 0.000 1.165 0.370
N3 0.000 -1.165 0.370
C4 0.000 0.718 -0.866
C5 0.000 -0.718 -0.866
H6 0.000 0.000 2.167
H7 0.000 1.381 -1.724
H8 0.000 -1.381 -1.724

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8
C11.36611.36612.07772.07771.08373.12923.1292
N21.36612.32941.31402.25202.14202.10513.2963
N31.36612.32942.25201.31402.14203.29632.1051
C42.07771.31402.25201.43613.11731.08452.2677
C52.07772.25201.31401.43613.11732.26771.0845
H61.08372.14202.14203.11733.11734.12944.1294
H73.12922.10513.29631.08452.26774.12942.7620
H83.12923.29632.10512.26771.08454.12942.7620

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 103.809 C1 N3 C5 103.809
N2 C1 N3 115.656 N2 C1 H6 122.172
N2 C4 C5 108.363 N2 C4 H7 123.598
N3 C1 H6 122.172 N3 C5 C4 108.363
N3 C5 H8 123.598 C4 C5 H8 128.039
C5 C4 H7 128.039
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability