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

using model chemistry: QCISD/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2B1
Energy calculated at QCISD/6-311G**
 hartrees
Energy at 0K-224.994885
Energy at 298.15K-224.999325
HF Energy-224.251015
Nuclear repulsion energy152.630081
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 QCISD/6-311G**
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 3268 3118 2.79      
2 A1 3254 3104 10.58      
3 A1 1478 1410 15.49      
4 A1 1327 1266 47.38      
5 A1 1160 1107 25.22      
6 A1 1001 955 1.57      
7 A1 918 876 3.78      
8 A2 868 828 0.00      
9 A2 562 536 0.00      
10 B1 848 809 0.51      
11 B1 770 734 23.66      
12 B1 523 499 30.26      
13 B2 3241 3092 1.13      
14 B2 1549 1478 17.53      
15 B2 1302 1243 0.07      
16 B2 1198 1143 6.43      
17 B2 1011 965 56.54      
18 B2 795 759 0.34      

Unscaled Zero Point Vibrational Energy (zpe) 12536.5 cm-1
Scaled (by 0.9541) Zero Point Vibrational Energy (zpe) 11961.1 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 QCISD/6-311G**
ABC
0.35488 0.30339 0.16356

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.097
N2 0.000 1.171 0.371
N3 0.000 -1.171 0.371
C4 0.000 0.741 -0.875
C5 0.000 -0.741 -0.875
H6 0.000 0.000 2.180
H7 0.000 1.409 -1.730
H8 0.000 -1.409 -1.730

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8
C11.37761.37762.10712.10711.08313.15853.1585
N21.37762.34191.31912.28232.15482.11473.3271
N31.37762.34192.28231.31912.15483.32712.1147
C42.10711.31912.28231.48123.14421.08452.3127
C52.10712.28231.31911.48123.14422.31271.0845
H61.08312.15482.15483.14423.14424.15614.1561
H73.15852.11473.32711.08452.31274.15612.8171
H83.15853.32712.11472.31271.08454.15612.8171

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 102.748 C1 N3 C5 102.748
N2 C1 N3 116.419 N2 C1 H6 121.791
N2 C4 C5 109.042 N2 C4 H7 122.941
N3 C1 H6 121.791 N3 C5 C4 109.042
N3 C5 H8 122.941 C4 C5 H8 128.017
C5 C4 H7 128.017
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability