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

using model chemistry: CCSD=FULL/cc-pVTZ

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=FULL/cc-pVTZ
 hartrees
Energy at 0K-225.200175
Energy at 298.15K-225.204711
HF Energy-224.278633
Nuclear repulsion energy153.974715
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=FULL/cc-pVTZ
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 3297 3126 1.47      
2 A1 3284 3113 8.73      
3 A1 1504 1426 14.61      
4 A1 1351 1281 52.62      
5 A1 1186 1125 26.36      
6 A1 1020 967 1.83      
7 A1 935 887 3.18      
8 A2 935 887 0.00      
9 A2 581 551 0.00      
10 B1 910 863 0.31      
11 B1 811 769 21.89      
12 B1 543 515 31.07      
13 B2 3268 3099 0.38      
14 B2 1576 1494 18.55      
15 B2 1327 1258 0.01      
16 B2 1216 1153 7.93      
17 B2 1030 976 61.02      
18 B2 796 754 0.28      

Unscaled Zero Point Vibrational Energy (zpe) 12784.8 cm-1
Scaled (by 0.9481) Zero Point Vibrational Energy (zpe) 12121.3 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=FULL/cc-pVTZ
ABC
0.35990 0.30983 0.16650

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD=FULL/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.090
N2 0.000 1.159 0.369
N3 0.000 -1.159 0.369
C4 0.000 0.732 -0.869
C5 0.000 -0.732 -0.869
H6 0.000 0.000 2.163
H7 0.000 1.391 -1.717
H8 0.000 -1.391 -1.717

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8
C11.36561.36562.09212.09211.07233.13313.1331
N21.36562.31841.30942.26072.13602.09853.2943
N31.36562.31842.26071.30942.13603.29432.0985
C42.09211.30942.26071.46493.11911.07342.2862
C52.09212.26071.30941.46493.11912.28621.0734
H61.07232.13602.13603.11913.11914.12154.1215
H73.13312.09853.29431.07342.28624.12152.7815
H83.13313.29432.09852.28621.07344.12152.7815

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 102.886 C1 N3 C5 102.886
N2 C1 N3 116.184 N2 C1 H6 121.908
N2 C4 C5 109.022 N2 C4 H7 123.152
N3 C1 H6 121.908 N3 C5 C4 109.022
N3 C5 H8 123.152 C4 C5 H8 127.826
C5 C4 H7 127.826
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability