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

using model chemistry: MP2/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/6-311G**
 hartrees
Energy at 0K-225.524979
Energy at 298.15K-225.530966
HF Energy-224.775043
Nuclear repulsion energy166.399263
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 MP2/6-311G**
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 3274 3111 10.56      
2 A1 3118 2962 0.47      
3 A1 1674 1590 19.23      
4 A1 1435 1364 9.36      
5 A1 1397 1328 13.27      
6 A1 1267 1204 5.80      
7 A1 1048 996 1.16      
8 A1 930 883 13.69      
9 A2 1151 1094 0.00      
10 A2 891 847 0.00      
11 A2 535 508 0.00      
12 B1 3172 3014 0.46      
13 B1 1019 968 22.29      
14 B1 823 782 6.42      
15 B1 345 328 36.29      
16 B2 3260 3098 4.22      
17 B2 1737 1651 0.00      
18 B2 1398 1328 36.43      
19 B2 1247 1185 1.83      
20 B2 1095 1040 31.36      
21 B2 936 889 66.49      

Unscaled Zero Point Vibrational Energy (zpe) 15875.2 cm-1
Scaled (by 0.9502) Zero Point Vibrational Energy (zpe) 15084.6 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 MP2/6-311G**
ABC
0.36193 0.30217 0.17009

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.206
N2 0.000 0.997 0.284
N3 0.000 -0.997 0.284
C4 0.000 0.728 -0.951
C5 0.000 -0.728 -0.951
H6 -0.899 0.000 1.828
H7 0.899 0.000 1.828
H8 0.000 1.479 -1.730
H9 0.000 -1.479 -1.730

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.35741.35742.27572.27571.09331.09333.28693.2869
N21.35741.99381.26392.12112.04582.04582.07093.1918
N31.35741.99382.12111.26392.04582.04583.19182.0709
C42.27571.26392.12111.45523.00993.00991.08252.3404
C52.27572.12111.26391.45523.00993.00992.34041.0825
H61.09332.04582.04583.00993.00991.79713.95663.9566
H71.09332.04582.04583.00993.00991.79713.95663.9566
H83.28692.07093.19181.08252.34043.95663.95662.9587
H93.28693.19182.07092.34041.08253.95663.95662.9587

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 120.441 C1 N3 C5 120.441
N2 C1 N3 94.513 N2 C1 H6 112.746
N2 C1 H7 112.746 N2 C4 C5 102.302
N2 C4 H8 123.716 N3 C1 H6 112.746
N3 C1 H7 112.746 N3 C5 C4 102.302
N3 C5 H9 123.716 C4 C5 H9 133.981
C5 C4 H8 133.981 H6 C1 H7 110.547
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability