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

using model chemistry: B2PLYP=FULLultrafine/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B2PLYP=FULLultrafine/3-21G
 hartrees
Energy at 0K-224.530494
Energy at 298.15K 
HF Energy-224.367864
Nuclear repulsion energy165.421395
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 B2PLYP=FULLultrafine/3-21G
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 3290 3290 9.03      
2 A1 3116 3116 0.34      
3 A1 1667 1667 25.36      
4 A1 1479 1479 11.64      
5 A1 1361 1361 0.81      
6 A1 1239 1239 6.58      
7 A1 1026 1026 17.21      
8 A1 884 884 5.64      
9 A2 1190 1190 0.00      
10 A2 941 941 0.00      
11 A2 577 577 0.00      
12 B1 3162 3162 0.13      
13 B1 1032 1032 18.66      
14 B1 855 855 9.64      
15 B1 379 379 45.74      
16 B2 3273 3273 12.06      
17 B2 1711 1711 0.33      
18 B2 1328 1328 9.76      
19 B2 1275 1275 1.92      
20 B2 1066 1066 29.96      
21 B2 976 976 88.37      

Unscaled Zero Point Vibrational Energy (zpe) 15913.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15913.1 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 B2PLYP=FULLultrafine/3-21G
ABC
0.35836 0.29729 0.16775

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.222
N2 0.000 0.998 0.282
N3 0.000 -0.998 0.282
C4 0.000 0.740 -0.956
C5 0.000 -0.740 -0.956
H6 -0.898 0.000 1.841
H7 0.898 0.000 1.841
H8 0.000 1.470 -1.747
H9 0.000 -1.470 -1.747

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.37121.37122.30072.30071.09071.09073.31343.3134
N21.37121.99641.26482.13442.05742.05742.08363.1954
N31.37121.99642.13441.26482.05742.05743.19542.0836
C42.30071.26482.13441.48063.02953.02951.07632.3476
C52.30072.13441.26481.48063.02953.02952.34761.0763
H61.09072.05742.05743.02953.02951.79673.98033.9803
H71.09072.05742.05743.02953.02951.79673.98033.9803
H83.31342.08363.19541.07632.34763.98033.98032.9399
H93.31343.19542.08362.34761.07633.98033.98032.9399

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 121.518 C1 N3 C5 121.518
N2 C1 N3 93.436 N2 C1 H6 112.881
N2 C1 H7 112.881 N2 C4 C5 101.765
N2 C4 H8 125.554 N3 C1 H6 112.881
N3 C1 H7 112.881 N3 C5 C4 101.765
N3 C5 H9 125.554 C4 C5 H9 132.681
C5 C4 H8 132.681 H6 C1 H7 110.899
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability