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

using model chemistry: CCD/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 CCD/6-31G*
 hartrees
Energy at 0K-224.882298
Energy at 298.15K-224.886670
HF Energy-224.202122
Nuclear repulsion energy153.731250
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 CCD/6-31G*
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 3291 3115 0.76      
2 A1 3279 3103 18.37      
3 A1 1542 1459 42.89      
4 A1 1391 1317 76.06      
5 A1 1209 1145 44.02      
6 A1 1062 1005 11.58      
7 A1 950 899 2.60      
8 A2 952 901 0.00      
9 A2 598 566 0.00      
10 B1 919 870 3.44      
11 B1 852 807 12.95      
12 B1 550 521 41.92      
13 B2 3264 3089 0.52      
14 B2 1660 1571 35.49      
15 B2 1331 1260 0.06      
16 B2 1228 1162 27.52      
17 B2 1009 955 45.24      
18 B2 474 448 0.23      

Unscaled Zero Point Vibrational Energy (zpe) 12779.7 cm-1
Scaled (by 0.9465) Zero Point Vibrational Energy (zpe) 12096.0 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 CCD/6-31G*
ABC
0.35962 0.30871 0.16611

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.090
N2 0.000 1.165 0.368
N3 0.000 -1.165 0.368
C4 0.000 0.728 -0.868
C5 0.000 -0.728 -0.868
H6 0.000 0.000 2.175
H7 0.000 1.392 -1.727
H8 0.000 -1.392 -1.727

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8
C11.37011.37012.08872.08871.08493.14213.1421
N21.37012.32911.31072.26032.14942.10743.3055
N31.37012.32912.26031.31072.14943.30552.1074
C42.08871.31072.26031.45603.12841.08592.2877
C52.08872.26031.31071.45603.12842.28771.0859
H61.08492.14942.14943.12843.12844.14264.1426
H73.14212.10743.30551.08592.28774.14262.7845
H83.14213.30552.10742.28771.08594.14262.7845

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 102.336 C1 N3 C5 102.336
N2 C1 N3 116.420 N2 C1 H6 121.790
N2 C4 C5 109.454 N2 C4 H7 122.836
N3 C1 H6 121.790 N3 C5 C4 109.454
N3 C5 H8 122.836 C4 C5 H8 127.710
C5 C4 H7 127.710
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability