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

using model chemistry: ROMP2/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 ROMP2/TZVP
 hartrees
Energy at 0K-224.987432
Energy at 298.15K-224.991736
HF Energy-224.251042
Nuclear repulsion energy152.902246
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/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 3302 3302        
2 A1 3286 3286        
3 A1 1569 1569        
4 A1 1344 1344        
5 A1 1161 1161        
6 A1 999 999        
7 A1 915 915        
8 A2 729 729        
9 A2 539 539        
10 B1 739 739        
11 B1 718 718        
12 B1 482 482        
13 B2 3274 3274        
14 B2 1533 1533        
15 B2 1317 1317        
16 B2 1229 1229        
17 B2 1017 1017        
18 B2 821 821        

Unscaled Zero Point Vibrational Energy (zpe) 12486.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12486.6 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 ROMP2/TZVP
ABC
0.35563 0.30492 0.16416

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROMP2/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.100
N2 0.000 1.170 0.369
N3 0.000 -1.170 0.369
C4 0.000 0.736 -0.874
C5 0.000 -0.736 -0.874
H6 0.000 0.000 2.178
H7 0.000 1.401 -1.725
H8 0.000 -1.401 -1.725

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8
C11.37951.37952.10652.10651.07863.15323.1532
N21.37952.33951.31592.27512.15502.10613.3156
N31.37952.33952.27511.31592.15503.31562.1061
C42.10651.31592.27511.47233.13991.08012.3007
C52.10652.27511.31591.47233.13992.30071.0801
H61.07862.15502.15503.13993.13994.14724.1472
H73.15322.10613.31561.08012.30074.14722.8030
H83.15323.31562.10612.30071.08014.14722.8030

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 102.771 C1 N3 C5 102.771
N2 C1 N3 115.978 N2 C1 H6 122.011
N2 C4 C5 109.240 N2 C4 H7 122.737
N3 C1 H6 122.011 N3 C5 C4 109.240
N3 C5 H8 122.737 C4 C5 H8 128.024
C5 C4 H7 128.024
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability