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

using model chemistry: B2PLYP=FULL/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2B1
Energy calculated at B2PLYP=FULL/3-21G
 hartrees
Energy at 0K-223.978165
Energy at 298.15K-223.982347
HF Energy-223.817336
Nuclear repulsion energy150.521131
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 B2PLYP=FULL/3-21G
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 3327 3167 0.90      
2 A1 3303 3145 2.81      
3 A1 1337 1273 0.00      
4 A1 1294 1232 36.18      
5 A1 1095 1043 49.16      
6 A1 929 885 8.06      
7 A1 877 835 1.12      
8 A2 911 867 0.00      
9 A2 588 559 0.00      
10 B1 850 810 0.82      
11 B1 792 754 42.98      
12 B1 521 496 34.00      
13 B2 3288 3130 1.56      
14 B2 1464 1394 0.53      
15 B2 1294 1232 0.01      
16 B2 1183 1127 7.85      
17 B2 947 901 44.96      
18 B2 420 400 14.86      

Unscaled Zero Point Vibrational Energy (zpe) 12209.9 cm-1
Scaled (by 0.952) Zero Point Vibrational Energy (zpe) 11623.8 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 B2PLYP=FULL/3-21G
ABC
0.34162 0.29730 0.15896

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.133
N2 0.000 1.186 0.370
N3 0.000 -1.186 0.370
C4 0.000 0.746 -0.892
C5 0.000 -0.746 -0.892
H6 0.000 0.000 2.208
H7 0.000 1.403 -1.745
H8 0.000 -1.403 -1.745

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8
C11.40981.40982.15772.15771.07463.20143.2014
N21.40982.37141.33632.30752.18662.12613.3426
N31.40982.37142.30751.33632.18663.34262.1261
C42.15771.33632.30751.49243.18771.07652.3121
C52.15772.30751.33631.49243.18772.31211.0765
H61.07462.18662.18663.18773.18774.19384.1938
H73.20142.12613.34261.07652.31214.19382.8055
H83.20143.34262.12612.31211.07654.19382.8055

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 103.549 C1 N3 C5 103.549
N2 C1 N3 114.499 N2 C1 H6 122.750
N2 C4 C5 109.201 N2 C4 H7 123.215
N3 C1 H6 122.750 N3 C5 C4 109.201
N3 C5 H8 123.215 C4 C5 H8 127.583
C5 C4 H7 127.583
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability