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All results from a given calculation for C3H4N2 (2H-Imidazole)

using model chemistry: QCISD(T)=FULL/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD(T)=FULL/cc-pVTZ
 hartrees
Energy at 0K-225.813806
Energy at 298.15K-225.819836
HF Energy-224.804461
Nuclear repulsion energy166.960750
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(T)=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 3258 3118        
2 A1 3103 2969        
3 A1 1700 1627        
4 A1 1437 1375        
5 A1 1408 1347        
6 A1 1262 1208        
7 A1 1041 996        
8 A1 935 895        
9 A2 1171 1121        
10 A2 928 888        
11 A2 541 518        
12 B1 3138 3003        
13 B1 1026 982        
14 B1 834 798        
15 B1 361 345        
16 B2 3241 3101        
17 B2 1760 1684        
18 B2 1408 1347        
19 B2 1261 1207        
20 B2 1090 1043        
21 B2 937 897        

Unscaled Zero Point Vibrational Energy (zpe) 15919.3 cm-1
Scaled (by 0.9569) Zero Point Vibrational Energy (zpe) 15233.2 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(T)=FULL/cc-pVTZ
ABC
0.36325 0.30486 0.17115

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.202
N2 0.000 0.997 0.281
N3 0.000 -0.997 0.281
C4 0.000 0.726 -0.945
C5 0.000 -0.726 -0.945
H6 -0.892 0.000 1.823
H7 0.892 0.000 1.823
H8 0.000 1.466 -1.725
H9 0.000 -1.466 -1.725

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.35701.35702.26662.26661.08701.08703.27333.2733
N21.35701.99371.25622.11462.04112.04112.05993.1765
N31.35701.99372.11461.25622.04112.04113.17652.0599
C42.26661.25622.11461.45142.99742.99741.07502.3264
C52.26662.11461.25621.45142.99742.99742.32641.0750
H61.08702.04112.04112.99742.99741.78473.94063.9406
H71.08702.04112.04112.99742.99741.78473.94063.9406
H83.27332.05993.17651.07502.32643.94063.94062.9327
H93.27333.17652.05992.32641.07503.94063.94062.9327

picture of 2H-Imidazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C4 120.261 C1 N3 C5 120.261
N2 C1 N3 94.546 N2 C1 H6 112.794
N2 C1 H7 112.794 N2 C4 C5 102.466
N2 C4 H8 123.983 N3 C1 H6 112.794
N3 C1 H7 112.794 N3 C5 C4 102.466
N3 C5 H9 123.983 C4 C5 H9 133.551
C5 C4 H8 133.551 H6 C1 H7 110.361
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability