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

using model chemistry: B2PLYP=FULL/TZVP

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/TZVP
 hartrees
Energy at 0K-225.996707
Energy at 298.15K-226.002707
HF Energy-225.722385
Nuclear repulsion energy166.950286
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/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 3256 3107 12.64      
2 A1 3090 2948 0.10      
3 A1 1689 1611 23.14      
4 A1 1425 1360 7.00      
5 A1 1399 1335 20.98      
6 A1 1255 1198 4.44      
7 A1 1039 992 2.23      
8 A1 935 893 11.77      
9 A2 1154 1101 0.00      
10 A2 888 847 0.00      
11 A2 542 517 0.00      
12 B1 3131 2987 0.56      
13 B1 1023 976 19.91      
14 B1 827 789 6.43      
15 B1 351 335 39.43      
16 B2 3243 3094 4.94      
17 B2 1756 1676 0.39      
18 B2 1392 1329 33.29      
19 B2 1262 1205 1.06      
20 B2 1088 1038 39.41      
21 B2 938 895 65.53      

Unscaled Zero Point Vibrational Energy (zpe) 15840.9 cm-1
Scaled (by 0.9542) Zero Point Vibrational Energy (zpe) 15115.4 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/TZVP
ABC
0.36328 0.30489 0.17117

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.201
N2 0.000 0.997 0.281
N3 0.000 -0.997 0.281
C4 0.000 0.725 -0.945
C5 0.000 -0.725 -0.945
H6 -0.892 0.000 1.828
H7 0.892 0.000 1.828
H8 0.000 1.468 -1.728
H9 0.000 -1.468 -1.728

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.35621.35622.26472.26471.09091.09093.27563.2756
N21.35621.99351.25542.11392.04552.04552.06323.1795
N31.35621.99352.11391.25542.04552.04553.17952.0632
C42.26471.25542.11391.45103.00223.00221.07892.3289
C52.26472.11391.25541.45103.00223.00222.32891.0789
H61.09092.04552.04553.00223.00221.78433.94933.9493
H71.09092.04552.04553.00223.00221.78433.94933.9493
H83.27562.06323.17951.07892.32893.94933.94932.9358
H93.27563.17952.06322.32891.07893.94933.94932.9358

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 120.215 C1 N3 C5 120.215
N2 C1 N3 94.612 N2 C1 H6 112.970
N2 C1 H7 112.970 N2 C4 C5 102.479
N2 C4 H8 124.043 N3 C1 H6 112.970
N3 C1 H7 112.970 N3 C5 C4 102.479
N3 C5 H9 124.043 C4 C5 H9 133.478
C5 C4 H8 133.478 H6 C1 H7 109.727
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability