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

using model chemistry: CCSD(T)/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 CCSD(T)/TZVP
 hartrees
Energy at 0K-225.042605
Energy at 298.15K-225.046864
HF Energy-224.266484
Nuclear repulsion energy152.630090
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)/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 3266 3144        
2 A1 3252 3130        
3 A1 1450 1396        
4 A1 1322 1273        
5 A1 1151 1107        
6 A1 991 954        
7 A1 917 882        
8 A2 712 686        
9 A2 526 506        
10 B1 757 728        
11 B1 725 698        
12 B1 488 470        
13 B2 3240 3119        
14 B2 1537 1479        
15 B2 1310 1261        
16 B2 1201 1156        
17 B2 997 960        
18 B2 741 713        

Unscaled Zero Point Vibrational Energy (zpe) 12291.5 cm-1
Scaled (by 0.9625) Zero Point Vibrational Energy (zpe) 11830.6 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 CCSD(T)/TZVP
ABC
0.35431 0.30392 0.16359

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.099
N2 0.000 1.171 0.372
N3 0.000 -1.171 0.372
C4 0.000 0.738 -0.876
C5 0.000 -0.738 -0.876
H6 0.000 0.000 2.180
H7 0.000 1.404 -1.729
H8 0.000 -1.404 -1.729

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8
C11.37891.37892.10852.10851.08093.15733.1573
N21.37892.34291.32112.28082.15452.11343.3234
N31.37892.34292.28081.32112.15453.32342.1134
C42.10851.32112.28081.47563.14391.08212.3052
C52.10852.28081.32111.47563.14392.30521.0821
H61.08092.15452.15453.14393.14394.15334.1533
H73.15732.11343.32341.08212.30524.15332.8077
H83.15733.32342.11342.30521.08214.15332.8077

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 102.675 C1 N3 C5 102.675
N2 C1 N3 116.324 N2 C1 H6 121.838
N2 C4 C5 109.163 N2 C4 H7 122.845
N3 C1 H6 121.838 N3 C5 C4 109.163
N3 C5 H8 122.845 C4 C5 H8 127.993
C5 C4 H7 127.993
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability