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

using model chemistry: MP4/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2B1
Energy calculated at MP4/cc-pVDZ
 hartrees
Energy at 0K-224.951890
Energy at 298.15K-224.956234
HF Energy-224.219427
Nuclear repulsion energy152.474059
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 MP4/cc-pVDZ
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 3260 3152        
2 A1 3245 3138        
3 A1 1490 1441        
4 A1 1361 1316        
5 A1 1181 1142        
6 A1 1025 991        
7 A1 920 890        
8 A2 968 936        
9 A2 587 568        
10 B1 924 893        
11 B1 856 828        
12 B1 535 517        
13 B2 3230 3123        
14 B2 1626 1572        
15 B2 1289 1247        
16 B2 1198 1159        
17 B2 979 946        
18 B2 455 440        

Unscaled Zero Point Vibrational Energy (zpe) 12564.4 cm-1
Scaled (by 0.9669) Zero Point Vibrational Energy (zpe) 12148.6 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 MP4/cc-pVDZ
ABC
0.35546 0.30244 0.16341

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.093
N2 0.000 1.179 0.373
N3 0.000 -1.179 0.373
C4 0.000 0.732 -0.873
C5 0.000 -0.732 -0.873
H6 0.000 0.000 2.188
H7 0.000 1.402 -1.741
H8 0.000 -1.402 -1.741

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8
C11.38121.38122.09782.09781.09493.16173.1617
N21.38122.35741.32342.28112.16412.12553.3359
N31.38122.35742.28111.32342.16413.33592.1255
C42.09781.32342.28111.46443.14711.09632.3039
C52.09782.28111.32341.46443.14712.30391.0963
H61.09492.16412.16413.14713.14714.17134.1713
H73.16172.12553.33591.09632.30394.17132.8040
H83.16173.33592.12552.30391.09634.17132.8040

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 101.703 C1 N3 C5 101.703
N2 C1 N3 117.158 N2 C1 H6 121.421
N2 C4 C5 109.718 N2 C4 H7 122.622
N3 C1 H6 121.421 N3 C5 C4 109.718
N3 C5 H8 122.622 C4 C5 H8 127.660
C5 C4 H7 127.660
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability