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

using model chemistry: CCSD(T)=FULL/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2B1
Energy calculated at CCSD(T)=FULL/6-31G*
 hartrees
Energy at 0K-224.947514
Energy at 298.15K-224.951895
HF Energy-224.200627
Nuclear repulsion energy152.350319
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 CCSD(T)=FULL/6-31G*
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 3257 3162        
2 A1 3243 3148        
3 A1 1478 1435        
4 A1 1332 1293        
5 A1 1159 1125        
6 A1 1011 982        
7 A1 916 889        
8 A2 843 818        
9 A2 559 542        
10 B1 841 817        
11 B1 759 737        
12 B1 519 504        
13 B2 3232 3137        
14 B2 1553 1507        
15 B2 1311 1272        
16 B2 1203 1168        
17 B2 1006 976        
18 B2 768 745        

Unscaled Zero Point Vibrational Energy (zpe) 12494.5 cm-1
Scaled (by 0.9707) Zero Point Vibrational Energy (zpe) 12128.5 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 CCSD(T)=FULL/6-31G*
ABC
0.35298 0.30304 0.16306

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.100
N2 0.000 1.174 0.373
N3 0.000 -1.174 0.373
C4 0.000 0.737 -0.878
C5 0.000 -0.737 -0.878
H6 0.000 0.000 2.186
H7 0.000 1.407 -1.735
H8 0.000 -1.407 -1.735

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8
C11.38071.38072.11042.11041.08663.16453.1645
N21.38072.34781.32472.28402.16022.12063.3322
N31.38072.34782.28401.32472.16023.33222.1206
C42.11041.32472.28401.47453.15161.08772.3091
C52.11042.28401.32471.47453.15162.30911.0877
H61.08662.16022.16023.15163.15164.16604.1660
H73.16452.12063.33221.08772.30914.16602.8139
H83.16453.33222.12062.30911.08774.16602.8139

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 102.517 C1 N3 C5 102.517
N2 C1 N3 116.473 N2 C1 H6 121.763
N2 C4 C5 109.246 N2 C4 H7 122.751
N3 C1 H6 121.763 N3 C5 C4 109.246
N3 C5 H8 122.751 C4 C5 H8 128.002
C5 C4 H7 128.002
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability