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

using model chemistry: MP2=FULL/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 MP2=FULL/6-311G*
 hartrees
Energy at 0K-225.028223
Energy at 298.15K 
HF Energy-224.245472
Nuclear repulsion energy154.213353
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 MP2=FULL/6-311G*
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 3293 3119 0.00      
2 A1 3280 3107 25.25      
3 A1 1498 1419 62.49      
4 A1 1402 1328 72.53      
5 A1 1227 1162 61.73      
6 A1 1071 1014 15.95      
7 A1 944 894 2.32      
8 A2 1005 951 0.00      
9 A2 607 575 0.00      
10 B1 963 912 2.40      
11 B1 886 839 16.60      
12 B1 527 499 43.21      
13 B2 3264 3091 0.02      
14 B2 1676 1587 64.25      
15 B2 1315 1245 0.31      
16 B2 1225 1161 41.53      
17 B2 998 945 46.80      
18 B2 276i 261i 0.41      

Unscaled Zero Point Vibrational Energy (zpe) 12451.7 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 11793.0 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 MP2=FULL/6-311G*
ABC
0.36247 0.31052 0.16725

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.082
N2 0.000 1.164 0.369
N3 0.000 -1.164 0.369
C4 0.000 0.720 -0.865
C5 0.000 -0.720 -0.865
H6 0.000 0.000 2.165
H7 0.000 1.385 -1.721
H8 0.000 -1.385 -1.721

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8
C11.36511.36512.07612.07611.08313.12693.1269
N21.36512.32881.31212.25302.14012.10253.2973
N31.36512.32882.25301.31212.14013.29732.1025
C42.07611.31212.25301.44033.11461.08422.2729
C52.07612.25301.31211.44033.11462.27291.0842
H61.08312.14012.14013.11463.11464.12594.1259
H73.12692.10253.29731.08422.27294.12592.7705
H83.12693.29732.10252.27291.08424.12592.7705

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 101.673 C1 N3 C5 101.673
N2 C1 N3 117.074 N2 C1 H6 121.463
N2 C4 C5 109.790 N2 C4 H7 122.370
N3 C1 H6 121.463 N3 C5 C4 109.790
N3 C5 H8 122.370 C4 C5 H8 127.840
C5 C4 H7 127.840
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability