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

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2B1
Energy calculated at CBS-Q
 hartrees
Energy at 0K-225.187029
Energy at 298.15K-225.182378
HF Energy-224.202670
Nuclear repulsion energy154.305366
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 CBS-Q
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 3429 3429 6.72      
2 A1 3413 3413 12.98      
3 A1 1596 1596 28.74      
4 A1 1397 1397 68.79      
5 A1 1232 1232 24.84      
6 A1 1045 1045 0.27      
7 A1 992 992 4.09      
8 A2 922 922 0.00      
9 A2 603 603 0.00      
10 B1 900 900 0.44      
11 B1 827 827 18.88      
12 B1 608 608 37.69      
13 B2 3399 3399 2.79      
14 B2 1645 1645 23.40      
15 B2 1398 1398 0.00      
16 B2 1240 1240 16.61      
17 B2 1128 1128 44.56      
18 B2 902 902 5.77      

Unscaled Zero Point Vibrational Energy (zpe) 13337.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13337.5 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 CBS-Q
ABC
0.36146 0.30862 0.16648

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.088
N2 0.000 1.151 0.368
N3 0.000 -1.151 0.368
C4 0.000 0.740 -0.868
C5 0.000 -0.740 -0.868
H6 0.000 0.000 2.162
H7 0.000 1.404 -1.714
H8 0.000 -1.404 -1.714

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8
C11.35781.35782.09122.09121.07383.13413.1341
N21.35782.30141.30162.25842.13182.09663.2951
N31.35782.30142.25841.30162.13183.29512.0966
C42.09121.30162.25841.48013.11881.07552.3049
C52.09122.25841.30161.48013.11882.30491.0755
H61.07382.13182.13183.11883.11884.12234.1223
H73.13412.09663.29511.07552.30494.12232.8080
H83.13413.29512.09662.30491.07554.12232.8080

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 103.673 C1 N3 C5 103.673
N2 C1 N3 115.876 N2 C1 H6 122.062
N2 C4 C5 108.389 N2 C4 H7 123.490
N3 C1 H6 122.062 N3 C5 C4 108.389
N3 C5 H8 123.490 C4 C5 H8 128.121
C5 C4 H7 128.121
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability