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

using model chemistry: MP3=FULL/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-225.803597
Energy at 298.15K-225.809666
HF Energy-224.804726
Nuclear repulsion energy167.336862
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/6-311+G(3df,2p)
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 3299 3299 8.65      
2 A1 3135 3135 0.02      
3 A1 1751 1751 22.31      
4 A1 1459 1459 1.78      
5 A1 1430 1430 25.87      
6 A1 1277 1277 2.45      
7 A1 1062 1062 0.53      
8 A1 962 962 11.81      
9 A2 1185 1185 0.00      
10 A2 937 937 0.00      
11 A2 552 552 0.00      
12 B1 3180 3180 0.72      
13 B1 1037 1037 22.83      
14 B1 844 844 5.29      
15 B1 365 365 35.48      
16 B2 3284 3284 2.44      
17 B2 1822 1822 0.01      
18 B2 1446 1446 33.74      
19 B2 1281 1281 2.52      
20 B2 1108 1108 35.85      
21 B2 954 954 58.40      

Unscaled Zero Point Vibrational Energy (zpe) 16184.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16184.7 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/6-311+G(3df,2p)
ABC
0.36373 0.30706 0.17193

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.198
N2 0.000 0.997 0.279
N3 0.000 -0.997 0.279
C4 0.000 0.725 -0.941
C5 0.000 -0.725 -0.941
H6 -0.891 0.000 1.821
H7 0.891 0.000 1.821
H8 0.000 1.464 -1.723
H9 0.000 -1.464 -1.723

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.35621.35622.25822.25821.08731.08733.26703.2670
N21.35621.99351.24922.10942.04152.04152.05493.1716
N31.35621.99352.10941.24922.04152.04153.17162.0549
C42.25821.24922.10941.44932.99132.99131.07602.3239
C52.25822.10941.24921.44932.99132.99132.32391.0760
H61.08732.04152.04152.99132.99131.78173.93663.9366
H71.08732.04152.04152.99132.99131.78173.93663.9366
H83.26702.05493.17161.07602.32393.93663.93662.9275
H93.26703.17162.05492.32391.07603.93663.93662.9275

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 120.112 C1 N3 C5 120.112
N2 C1 N3 94.612 N2 C1 H6 112.875
N2 C1 H7 112.875 N2 C4 C5 102.583
N2 C4 H8 124.032 N3 C1 H6 112.875
N3 C1 H7 112.875 N3 C5 C4 102.583
N3 C5 H9 124.032 C4 C5 H9 133.385
C5 C4 H8 133.385 H6 C1 H7 110.042
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability