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

using model chemistry: MP3/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/TZVP
 hartrees
Energy at 0K-225.559862
Energy at 298.15K-225.565836
HF Energy-224.794769
Nuclear repulsion energy167.054298
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/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 3098 9.97      
2 A1 3139 2935 0.05      
3 A1 1753 1639 22.81      
4 A1 1465 1370 2.80      
5 A1 1435 1342 20.99      
6 A1 1279 1196 2.52      
7 A1 1061 992 1.09      
8 A1 957 895 13.08      
9 A2 1173 1097 0.00      
10 A2 844 789 0.00      
11 A2 528 494 0.00      
12 B1 3186 2980 0.04      
13 B1 1044 977 22.17      
14 B1 821 768 7.07      
15 B1 323 302 36.38      
16 B2 3297 3083 4.51      
17 B2 1819 1701 0.02      
18 B2 1448 1354 33.75      
19 B2 1291 1207 1.73      
20 B2 1110 1038 35.82      
21 B2 949 887 57.17      

Unscaled Zero Point Vibrational Energy (zpe) 16116.6 cm-1
Scaled (by 0.9352) Zero Point Vibrational Energy (zpe) 15072.2 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/TZVP
ABC
0.36311 0.30554 0.17137

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.202
N2 0.000 0.997 0.279
N3 0.000 -0.997 0.279
C4 0.000 0.726 -0.943
C5 0.000 -0.726 -0.943
H6 -0.895 0.000 1.823
H7 0.895 0.000 1.823
H8 0.000 1.465 -1.726
H9 0.000 -1.465 -1.726

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.35891.35892.26462.26461.08881.08883.27423.2742
N21.35891.99411.25162.11212.04412.04412.05873.1753
N31.35891.99412.11211.25162.04412.04413.17532.0587
C42.26461.25162.11211.45162.99612.99611.07702.3268
C52.26462.11211.25161.45162.99612.99612.32681.0770
H61.08882.04412.04412.99612.99611.78923.94223.9422
H71.08882.04412.04412.99612.99611.78923.94223.9422
H83.27422.05873.17531.07702.32683.94223.94222.9308
H93.27423.17532.05872.32681.07703.94223.94222.9308

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 120.282 C1 N3 C5 120.282
N2 C1 N3 94.401 N2 C1 H6 112.787
N2 C1 H7 112.787 N2 C4 C5 102.517
N2 C4 H8 124.111 N3 C1 H6 112.787
N3 C1 H7 112.787 N3 C5 C4 102.517
N3 C5 H9 124.111 C4 C5 H9 133.372
C5 C4 H8 133.372 H6 C1 H7 110.494
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability