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

using model chemistry: CISD/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 CISD/6-311G*
 hartrees
Energy at 0K-224.854247
Energy at 298.15K-224.858812
HF Energy-224.247249
Nuclear repulsion energy154.327339
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 CISD/6-311G*
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 3358 3107 2.06      
2 A1 3343 3093 17.91      
3 A1 1554 1437 33.93      
4 A1 1390 1286 76.05      
5 A1 1225 1133 36.04      
6 A1 1053 974 3.39      
7 A1 967 894 3.65      
8 A2 953 882 0.00      
9 A2 600 555 0.00      
10 B1 922 853 0.92      
11 B1 846 783 21.22      
12 B1 569 527 39.61      
13 B2 3328 3079 0.50      
14 B2 1647 1524 33.95      
15 B2 1351 1250 0.09      
16 B2 1234 1142 23.24      
17 B2 1045 967 50.33      
18 B2 725 670 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 13053.8 cm-1
Scaled (by 0.9253) Zero Point Vibrational Energy (zpe) 12078.7 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 CISD/6-311G*
ABC
0.36205 0.31097 0.16729

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.087
N2 0.000 1.156 0.367
N3 0.000 -1.156 0.367
C4 0.000 0.732 -0.866
C5 0.000 -0.732 -0.866
H6 0.000 0.000 2.163
H7 0.000 1.396 -1.716
H8 0.000 -1.396 -1.716

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8
C11.36151.36152.08532.08531.07673.13063.1306
N21.36152.31171.30372.25502.13602.09643.2937
N31.36152.31172.25501.30372.13603.29372.0964
C42.08531.30372.25501.46433.11641.07812.2914
C52.08532.25501.30371.46433.11642.29141.0781
H61.07672.13602.13603.11643.11644.12234.1223
H73.13062.09643.29371.07812.29144.12232.7917
H83.13063.29372.09642.29141.07814.12232.7917

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 102.938 C1 N3 C5 102.938
N2 C1 N3 116.195 N2 C1 H6 121.903
N2 C4 C5 108.965 N2 C4 H7 123.040
N3 C1 H6 121.903 N3 C5 C4 108.965
N3 C5 H8 123.040 C4 C5 H8 127.995
C5 C4 H7 127.995
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability