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

using model chemistry: MP2/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2B1
Energy calculated at MP2/6-311G*
 hartrees
Energy at 0K-224.934653
Energy at 298.15K 
HF Energy-224.245341
Nuclear repulsion energy154.095094
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 MP2/6-311G*
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 3289 3125 0.00      
2 A1 3276 3113 25.81      
3 A1 1497 1423 63.32      
4 A1 1400 1331 71.97      
5 A1 1221 1161 61.37      
6 A1 1069 1016 16.55      
7 A1 942 895 2.18      
8 A2 1003 953 0.00      
9 A2 606 576 0.00      
10 B1 961 913 2.54      
11 B1 886 842 16.39      
12 B1 526 500 43.28      
13 B2 3259 3097 0.01      
14 B2 1675 1592 64.65      
15 B2 1314 1249 0.28      
16 B2 1225 1164 41.89      
17 B2 996 946 46.44      
18 B2 294i 279i 0.41      

Unscaled Zero Point Vibrational Energy (zpe) 12424.9 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 11807.4 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 MP2/6-311G*
ABC
0.36220 0.30980 0.16698

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.076
N2 0.000 1.167 0.368
N3 0.000 -1.167 0.368
C4 0.000 0.728 -0.861
C5 0.000 -0.728 -0.861
H6 0.000 0.000 2.159
H7 0.000 1.392 -1.718
H8 0.000 -1.392 -1.718

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8
C11.36441.36442.06862.06861.08313.12123.1212
N21.36442.33331.30492.25802.13712.09843.3011
N31.36442.33332.25801.30492.13713.30112.0984
C42.06861.30492.25801.45533.10591.08452.2861
C52.06862.25801.30491.45533.10592.28611.0845
H61.08312.13712.13713.10593.10594.11914.1191
H73.12122.09843.30111.08452.28614.11912.7831
H83.12123.30112.09842.28611.08454.11912.7831

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 101.577 C1 N3 C5 101.577
N2 C1 N3 117.530 N2 C1 H6 121.235
N2 C4 C5 109.658 N2 C4 H7 122.595
N3 C1 H6 121.235 N3 C5 C4 109.658
N3 C5 H8 122.595 C4 C5 H8 127.747
C5 C4 H7 127.747
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability