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

using model chemistry: CCSD(T)=FULL/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)=FULL/TZVP
 hartrees
Energy at 0K-225.131945
Energy at 298.15K-225.136215
HF Energy-224.266683
Nuclear repulsion energy152.726622
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/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 3267 3123        
2 A1 3251 3108        
3 A1 1452 1388        
4 A1 1324 1266        
5 A1 1152 1101        
6 A1 992 948        
7 A1 918 878        
8 A2 720 688        
9 A2 527 504        
10 B1 761 727        
11 B1 729 697        
12 B1 490 468        
13 B2 3240 3097        
14 B2 1538 1470        
15 B2 1311 1254        
16 B2 1202 1149        
17 B2 998 955        
18 B2 742 710        

Unscaled Zero Point Vibrational Energy (zpe) 12307.1 cm-1
Scaled (by 0.956) Zero Point Vibrational Energy (zpe) 11765.6 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)=FULL/TZVP
ABC
0.35469 0.30435 0.16380

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.098
N2 0.000 1.170 0.371
N3 0.000 -1.170 0.371
C4 0.000 0.737 -0.876
C5 0.000 -0.737 -0.876
H6 0.000 0.000 2.179
H7 0.000 1.403 -1.728
H8 0.000 -1.403 -1.728

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8
C11.37801.37802.10752.10751.08013.15573.1557
N21.37802.34091.32012.27932.15322.11223.3213
N31.37802.34092.27931.32012.15323.32132.1122
C42.10751.32012.27931.47493.14221.08152.3041
C52.10752.27931.32011.47493.14222.30411.0815
H61.08012.15322.15323.14223.14224.15104.1510
H73.15572.11223.32131.08152.30414.15102.8064
H83.15573.32132.11222.30411.08154.15102.8064

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 102.704 C1 N3 C5 102.704
N2 C1 N3 116.297 N2 C1 H6 121.852
N2 C4 C5 109.148 N2 C4 H7 122.856
N3 C1 H6 121.852 N3 C5 C4 109.148
N3 C5 H8 122.856 C4 C5 H8 127.996
C5 C4 H7 127.996
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability