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

using model chemistry: MP3=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 MP3=FULL/TZVP
 hartrees
Energy at 0K-225.649504
Energy at 298.15K-225.655486
HF Energy-224.794896
Nuclear repulsion energy167.132398
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 MP3=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 3312 3092 9.90      
2 A1 3138 2930 0.04      
3 A1 1754 1637 22.68      
4 A1 1465 1368 2.82      
5 A1 1435 1340 21.35      
6 A1 1279 1194 2.52      
7 A1 1062 991 1.08      
8 A1 957 894 13.03      
9 A2 1176 1098 0.00      
10 A2 849 793 0.00      
11 A2 530 495 0.00      
12 B1 3186 2975 0.06      
13 B1 1045 976 22.09      
14 B1 824 769 6.91      
15 B1 325 304 36.46      
16 B2 3296 3078 4.39      
17 B2 1821 1700 0.02      
18 B2 1449 1353 33.40      
19 B2 1293 1207 1.73      
20 B2 1111 1038 36.17      
21 B2 949 887 57.03      

Unscaled Zero Point Vibrational Energy (zpe) 16128.0 cm-1
Scaled (by 0.9337) Zero Point Vibrational Energy (zpe) 15058.7 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 MP3=FULL/TZVP
ABC
0.36331 0.30593 0.17152

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=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 0.279
N3 0.000 -0.997 0.279
C4 0.000 0.725 -0.942
C5 0.000 -0.725 -0.942
H6 -0.894 0.000 1.822
H7 0.894 0.000 1.822
H8 0.000 1.464 -1.725
H9 0.000 -1.464 -1.725

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.35841.35842.26312.26311.08821.08823.27233.2723
N21.35841.99401.25092.11132.04312.04312.05753.1738
N31.35841.99402.11131.25092.04312.04313.17382.0575
C42.26311.25092.11131.45082.99432.99431.07642.3253
C52.26312.11131.25091.45082.99432.99432.32531.0764
H61.08822.04312.04312.99432.99431.78793.94003.9400
H71.08822.04312.04312.99432.99431.78793.94003.9400
H83.27232.05753.17381.07642.32533.94003.94002.9285
H93.27233.17382.05752.32531.07643.94003.94002.9285

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 120.241 C1 N3 C5 120.241
N2 C1 N3 94.438 N2 C1 H6 112.785
N2 C1 H7 112.785 N2 C4 C5 102.540
N2 C4 H8 124.115 N3 C1 H6 112.785
N3 C1 H7 112.785 N3 C5 C4 102.540
N3 C5 H9 124.115 C4 C5 H9 133.346
C5 C4 H8 133.346 H6 C1 H7 110.474
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability