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

using model chemistry: MP2=FULL/TZVP

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/TZVP
 hartrees
Energy at 0K-225.057629
Energy at 298.15K 
HF Energy-224.266999
Nuclear repulsion energy154.581077
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/TZVP
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 3305 3149 0.51      
2 A1 3293 3137 19.66      
3 A1 1492 1421 73.58      
4 A1 1405 1339 68.14      
5 A1 1222 1164 61.68      
6 A1 1070 1019 18.65      
7 A1 953 908 0.86      
8 A2 899 857 0.00      
9 A2 585 557 0.00      
10 B1 886 844 0.31      
11 B1 860 820 18.49      
12 B1 509 485 38.10      
13 B2 3277 3122 0.32      
14 B2 1671 1592 74.21      
15 B2 1331 1268 0.32      
16 B2 1238 1180 42.23      
17 B2 1002 955 43.96      
18 B2 366i 349i 0.62      

Unscaled Zero Point Vibrational Energy (zpe) 12316.2 cm-1
Scaled (by 0.9527) Zero Point Vibrational Energy (zpe) 11733.7 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 MP2=FULL/TZVP
ABC
0.36312 0.31284 0.16805

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.083
N2 0.000 1.160 0.368
N3 0.000 -1.160 0.368
C4 0.000 0.718 -0.864
C5 0.000 -0.718 -0.864
H6 0.000 0.000 2.162
H7 0.000 1.378 -1.719
H8 0.000 -1.378 -1.719

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8
C11.36291.36292.07532.07531.07863.12223.1222
N21.36292.32011.30892.24602.13632.09773.2856
N31.36292.32012.24601.30892.13633.28562.0977
C42.07531.30892.24601.43583.10981.07972.2634
C52.07532.24601.30891.43583.10982.26341.0797
H61.07862.13632.13633.10983.10984.11774.1177
H73.12222.09773.28561.07972.26344.11772.7562
H83.12223.28562.09772.26341.07974.11772.7562

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 101.914 C1 N3 C5 101.914
N2 C1 N3 116.684 N2 C1 H6 121.658
N2 C4 C5 109.744 N2 C4 H7 122.563
N3 C1 H6 121.658 N3 C5 C4 109.744
N3 C5 H8 122.563 C4 C5 H8 127.693
C5 C4 H7 127.693
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability