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

using model chemistry: wB97X-D/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 wB97X-D/3-21G*
 hartrees
Energy at 0K-224.203663
Energy at 298.15K-224.208002
HF Energy-224.203663
Nuclear repulsion energy151.324067
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 wB97X-D/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 3330 3156 0.66      
2 A1 3309 3137 1.29      
3 A1 1373 1301 11.09      
4 A1 1302 1234 38.89      
5 A1 1127 1068 51.88      
6 A1 939 890 7.36      
7 A1 900 853 0.17      
8 A2 935 886 0.00      
9 A2 588 557 0.00      
10 B1 869 824 0.17      
11 B1 802 761 53.21      
12 B1 519 492 34.78      
13 B2 3295 3123 0.57      
14 B2 1472 1395 0.58      
15 B2 1286 1218 0.01      
16 B2 1179 1118 8.59      
17 B2 962 912 52.83      
18 B2 602 571 14.74      

Unscaled Zero Point Vibrational Energy (zpe) 12394.6 cm-1
Scaled (by 0.9478) Zero Point Vibrational Energy (zpe) 11747.6 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 wB97X-D/3-21G*
ABC
0.34475 0.30102 0.16070

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.136
N2 0.000 1.161 0.370
N3 0.000 -1.161 0.370
C4 0.000 0.749 -0.894
C5 0.000 -0.749 -0.894
H6 0.000 0.000 2.213
H7 0.000 1.409 -1.745
H8 0.000 -1.409 -1.745

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8
C11.39101.39102.16392.16391.07683.20763.2076
N21.39102.32231.33012.29042.17802.13013.3292
N31.39102.32232.29041.33012.17803.32922.1301
C42.16391.33012.29041.49713.19601.07762.3197
C52.16392.29041.33011.49713.19602.31971.0776
H61.07682.17802.17803.19603.19604.20174.2017
H73.20762.13013.32921.07762.31974.20172.8188
H83.20763.32922.13012.31971.07764.20172.8188

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 105.332 C1 N3 C5 105.332
N2 C1 N3 113.189 N2 C1 H6 123.406
N2 C4 C5 108.074 N2 C4 H7 124.100
N3 C1 H6 123.406 N3 C5 C4 108.074
N3 C5 H8 124.100 C4 C5 H8 127.826
C5 C4 H7 127.826
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability