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

using model chemistry: ROMP2/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2B1
Energy calculated at ROMP2/STO-3G
 hartrees
Energy at 0K-221.647989
Energy at 298.15K-221.651860
HF Energy-221.335247
Nuclear repulsion energy147.043577
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 ROMP2/STO-3G
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 3539 3539        
2 A1 3533 3533        
3 A1 1522 1522        
4 A1 1317 1317        
5 A1 1136 1136        
6 A1 1010 1010        
7 A1 888 888        
8 A2 870 870        
9 A2 576 576        
10 B1 830 830        
11 B1 690 690        
12 B1 504 504        
13 B2 3525 3525        
14 B2 1547 1547        
15 B2 1314 1314        
16 B2 1183 1183        
17 B2 966 966        
18 B2 495 495        

Unscaled Zero Point Vibrational Energy (zpe) 12722.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12722.9 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 ROMP2/STO-3G
ABC
0.33348 0.27816 0.15166

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROMP2/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.137
N2 0.000 1.239 0.381
N3 0.000 -1.239 0.381
C4 0.000 0.753 -0.902
C5 0.000 -0.753 -0.902
H6 0.000 0.000 2.241
H7 0.000 1.414 -1.784
H8 0.000 -1.414 -1.784

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8
C11.45131.45132.17352.17351.10433.24523.2452
N21.45132.47741.37182.36882.23522.17173.4241
N31.45132.47742.36881.37182.23523.42412.1717
C42.17351.37182.36881.50543.23221.10242.3397
C52.17352.36881.37181.50543.23222.33971.1024
H61.10432.23522.23523.23223.23224.26644.2664
H73.24522.17173.42411.10242.33974.26642.8288
H83.24523.42412.17172.33971.10244.26642.8288

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 100.654 C1 N3 C5 100.654
N2 C1 N3 117.193 N2 C1 H6 121.403
N2 C4 C5 110.749 N2 C4 H7 122.366
N3 C1 H6 121.403 N3 C5 C4 110.749
N3 C5 H8 122.366 C4 C5 H8 126.885
C5 C4 H7 126.885
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability