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

using model chemistry: MP2=FULL/6-31G(2df,p)

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/6-31G(2df,p)
 hartrees
Energy at 0K-225.044814
Energy at 298.15K 
HF Energy-224.222967
Nuclear repulsion energy154.703439
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/6-31G(2df,p)
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 3315 3116 1.87      
2 A1 3306 3107 14.65      
3 A1 1481 1392 53.29      
4 A1 1410 1325 61.88      
5 A1 1245 1170 62.02      
6 A1 1082 1017 18.02      
7 A1 944 887 2.02      
8 A2 1050 987 0.00      
9 A2 620 583 0.00      
10 B1 1004 944 2.72      
11 B1 910 855 8.22      
12 B1 541 508 38.48      
13 B2 3289 3091 0.23      
14 B2 1671 1570 52.79      
15 B2 1315 1236 0.17      
16 B2 1227 1154 34.56      
17 B2 999 939 51.54      
18 B2 162i 152i 0.31      

Unscaled Zero Point Vibrational Energy (zpe) 12622.5 cm-1
Scaled (by 0.9399) Zero Point Vibrational Energy (zpe) 11863.9 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/6-31G(2df,p)
ABC
0.36404 0.31318 0.16835

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.078
N2 0.000 1.160 0.370
N3 0.000 -1.160 0.370
C4 0.000 0.716 -0.864
C5 0.000 -0.716 -0.864
H6 0.000 0.000 2.158
H7 0.000 1.374 -1.720
H8 0.000 -1.374 -1.720

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8
C11.35981.35982.06982.06981.07953.11753.1175
N21.35982.32091.31062.24542.13192.10023.2848
N31.35982.32092.24541.31062.13193.28482.1002
C42.06981.31062.24541.43223.10521.08002.2590
C52.06982.24541.31061.43223.10522.25901.0800
H61.07952.13192.13193.10523.10524.11414.1141
H73.11752.10023.28481.08002.25904.11412.7486
H83.11753.28482.10022.25901.08004.11412.7486

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 101.605 C1 N3 C5 101.605
N2 C1 N3 117.157 N2 C1 H6 121.421
N2 C4 C5 109.816 N2 C4 H7 122.634
N3 C1 H6 121.421 N3 C5 C4 109.816
N3 C5 H8 122.634 C4 C5 H8 127.549
C5 C4 H7 127.549
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability