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

using model chemistry: MP3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2B1
Energy calculated at MP3/6-31G*
 hartrees
Energy at 0K-224.880053
Energy at 298.15K-224.884404
HF Energy-224.202195
Nuclear repulsion energy153.865463
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 MP3/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3315 3111 0.51      
2 A1 3303 3100 16.94      
3 A1 1545 1450 43.89      
4 A1 1398 1312 80.59      
5 A1 1216 1141 47.01      
6 A1 1067 1002 13.24      
7 A1 955 896 2.46      
8 A2 958 900 0.00      
9 A2 601 564 0.00      
10 B1 929 872 3.33      
11 B1 860 807 13.32      
12 B1 551 517 42.88      
13 B2 3287 3085 0.29      
14 B2 1669 1567 37.59      
15 B2 1338 1256 0.07      
16 B2 1233 1157 30.11      
17 B2 1013 951 45.47      
18 B2 434 407 0.11      

Unscaled Zero Point Vibrational Energy (zpe) 12836.2 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 12048.0 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 MP3/6-31G*
ABC
0.36034 0.30917 0.16640

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.088
N2 0.000 1.164 0.368
N3 0.000 -1.164 0.368
C4 0.000 0.727 -0.867
C5 0.000 -0.727 -0.867
H6 0.000 0.000 2.171
H7 0.000 1.389 -1.725
H8 0.000 -1.389 -1.725

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8
C11.36901.36902.08622.08621.08313.13803.1380
N21.36902.32821.31032.25872.14652.10533.3019
N31.36902.32822.25871.31032.14653.30192.1053
C42.08621.31032.25871.45383.12431.08412.2837
C52.08622.25871.31031.45383.12432.28371.0841
H61.08312.14652.14653.12433.12434.13704.1370
H73.13802.10533.30191.08412.28374.13702.7790
H83.13803.30192.10532.28371.08414.13702.7790

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 102.255 C1 N3 C5 102.255
N2 C1 N3 116.503 N2 C1 H6 121.748
N2 C4 C5 109.493 N2 C4 H7 122.831
N3 C1 H6 121.748 N3 C5 C4 109.493
N3 C5 H8 122.831 C4 C5 H8 127.676
C5 C4 H7 127.676
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability