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

using model chemistry: MP2/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-225.103273
Energy at 298.15K 
HF Energy-224.285087
Nuclear repulsion energy154.531474
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/Def2TZVPP
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 3292 3133 1.70      
2 A1 3282 3123 15.70      
3 A1 1465 1394 48.18      
4 A1 1406 1338 69.51      
5 A1 1237 1177 65.01      
6 A1 1072 1020 15.09      
7 A1 938 893 1.35      
8 A2 1038 987 0.00      
9 A2 609 579 0.00      
10 B1 994 945 1.86      
11 B1 899 856 14.97      
12 B1 529 504 39.32      
13 B2 3265 3107 0.45      
14 B2 1663 1582 69.67      
15 B2 1316 1252 0.24      
16 B2 1223 1164 38.67      
17 B2 996 947 48.48      
18 B2 224i 213i 0.53      

Unscaled Zero Point Vibrational Energy (zpe) 12499.6 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 11893.4 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/Def2TZVPP
ABC
0.36282 0.31276 0.16797

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.075
N2 0.000 1.160 0.367
N3 0.000 -1.160 0.367
C4 0.000 0.723 -0.860
C5 0.000 -0.723 -0.860
H6 0.000 0.000 2.153
H7 0.000 1.382 -1.714
H8 0.000 -1.382 -1.714

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8
C11.35911.35912.06552.06551.07763.11283.1128
N21.35912.32091.30272.24832.12912.09363.2859
N31.35912.32092.24831.30272.12913.28592.0936
C42.06551.30272.24831.44683.09801.07882.2720
C52.06552.24831.30271.44683.09802.27201.0788
H61.07762.12912.12913.09803.09804.10644.1064
H73.11282.09363.28591.07882.27204.10642.7635
H83.11283.28592.09362.27201.07884.10642.7635

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 101.765 C1 N3 C5 101.765
N2 C1 N3 117.264 N2 C1 H6 121.368
N2 C4 C5 109.604 N2 C4 H7 122.787
N3 C1 H6 121.368 N3 C5 C4 109.604
N3 C5 H8 122.787 C4 C5 H8 127.609
C5 C4 H7 127.609
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability