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

using model chemistry: MP3=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 MP3=FULL/3-21G*
 hartrees
Energy at 0K-223.926663
Energy at 298.15K-223.932704
HF Energy-223.435479
Nuclear repulsion energy165.127004
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/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 3286 3286 7.08      
2 A1 3117 3117 0.01      
3 A1 1698 1698 26.44      
4 A1 1508 1508 8.74      
5 A1 1385 1385 1.14      
6 A1 1249 1249 5.16      
7 A1 1028 1028 17.79      
8 A1 914 914 5.63      
9 A2 1197 1197 0.00      
10 A2 886 886 0.00      
11 A2 570 570 0.00      
12 B1 3162 3162 0.02      
13 B1 1050 1050 20.21      
14 B1 836 836 12.79      
15 B1 374 374 43.40      
16 B2 3269 3269 11.42      
17 B2 1745 1745 0.61      
18 B2 1367 1367 10.19      
19 B2 1292 1292 2.64      
20 B2 1077 1077 29.44      
21 B2 989 989 79.79      

Unscaled Zero Point Vibrational Energy (zpe) 15998.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15998.1 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 MP3=FULL/3-21G*
ABC
0.35724 0.29599 0.16713

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.227
N2 0.000 0.999 0.281
N3 0.000 -0.999 0.281
C4 0.000 0.742 -0.957
C5 0.000 -0.742 -0.957
H6 -0.902 0.000 1.845
H7 0.902 0.000 1.845
H8 0.000 1.476 -1.748
H9 0.000 -1.476 -1.748

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.37591.37592.30772.30771.09281.09283.32193.3219
N21.37591.99711.26462.13662.06302.06302.08483.2004
N31.37591.99712.13661.26462.06302.06303.20042.0848
C42.30771.26462.13661.48503.03593.03591.07882.3554
C52.30772.13661.26461.48503.03593.03592.35541.0788
H61.09282.06302.06303.03593.03591.80353.98793.9879
H71.09282.06302.06303.03593.03591.80353.98793.9879
H83.32192.08483.20041.07882.35543.98793.98792.9522
H93.32193.20042.08482.35541.07883.98793.98792.9522

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 121.785 C1 N3 C5 121.785
N2 C1 N3 93.064 N2 C1 H6 112.867
N2 C1 H7 112.867 N2 C4 C5 101.683
N2 C4 H8 125.471 N3 C1 H6 112.867
N3 C1 H7 112.867 N3 C5 C4 101.683
N3 C5 H9 125.471 C4 C5 H9 132.846
C5 C4 H8 132.846 H6 C1 H7 111.213
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability