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

using model chemistry: B2PLYP=FULL/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=FULL/3-21G
 hartrees
Energy at 0K-224.530495
Energy at 298.15K-224.536551
HF Energy-224.367866
Nuclear repulsion energy165.421524
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=FULL/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 3132 9.04      
2 A1 3117 2967 0.34      
3 A1 1667 1587 25.39      
4 A1 1480 1409 11.62      
5 A1 1361 1296 0.80      
6 A1 1239 1179 6.59      
7 A1 1026 976 17.20      
8 A1 884 842 5.64      
9 A2 1190 1133 0.00      
10 A2 940 895 0.00      
11 A2 577 549 0.00      
12 B1 3162 3010 0.13      
13 B1 1033 983 18.53      
14 B1 855 814 9.75      
15 B1 380 361 45.76      
16 B2 3274 3117 12.07      
17 B2 1711 1629 0.33      
18 B2 1328 1264 9.66      
19 B2 1275 1214 2.02      
20 B2 1066 1015 29.94      
21 B2 976 929 88.41      

Unscaled Zero Point Vibrational Energy (zpe) 15914.0 cm-1
Scaled (by 0.952) Zero Point Vibrational Energy (zpe) 15150.1 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=FULL/3-21G
ABC
0.35835 0.29729 0.16775

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/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
C42.30071.26482.13441.48073.02953.02951.07632.3477
C52.30072.13441.26481.48073.02953.02952.34771.0763
H61.09072.05742.05743.02953.02951.79663.98033.9803
H71.09072.05742.05743.02953.02951.79663.98033.9803
H83.31342.08363.19541.07632.34773.98033.98032.9399
H93.31343.19542.08362.34771.07633.98033.98032.9399

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 112.883
N2 C1 H7 112.883 N2 C4 C5 101.764
N2 C4 H8 125.556 N3 C1 H6 112.883
N3 C1 H7 112.883 N3 C5 C4 101.764
N3 C5 H9 125.556 C4 C5 H9 132.680
C5 C4 H8 132.680 H6 C1 H7 110.893
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability