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

using model chemistry: MP4=FULL/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP4=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-225.571925
Energy at 298.15K-225.577854
HF Energy-224.752137
Nuclear repulsion energy165.140825
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 MP4=FULL/aug-cc-pVDZ
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 3250 3169        
2 A1 3079 3003        
3 A1 1657 1616        
4 A1 1412 1377        
5 A1 1378 1344        
6 A1 1251 1220        
7 A1 1023 998        
8 A1 907 885        
9 A2 1137 1109        
10 A2 867 845        
11 A2 521 508        
12 B1 3135 3058        
13 B1 996 971        
14 B1 800 780        
15 B1 335 326        
16 B2 3235 3154        
17 B2 1715 1672        
18 B2 1382 1347        
19 B2 1222 1192        
20 B2 1073 1047        
21 B2 919 896        

Unscaled Zero Point Vibrational Energy (zpe) 15645.8 cm-1
Scaled (by 0.9752) Zero Point Vibrational Energy (zpe) 15257.8 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 MP4=FULL/aug-cc-pVDZ
ABC
0.35849 0.29609 0.16749

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.219
N2 0.000 0.998 0.286
N3 0.000 -0.998 0.286
C4 0.000 0.735 -0.961
C5 0.000 -0.735 -0.961
H6 -0.906 0.000 1.847
H7 0.906 0.000 1.847
H8 0.000 1.498 -1.742
H9 0.000 -1.498 -1.742

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.36551.36552.30042.30041.10231.10233.31823.3182
N21.36551.99541.27482.13512.06172.06172.08923.2162
N31.36551.99542.13511.27482.06172.06173.21622.0892
C42.30041.27482.13511.47023.04043.04041.09182.3658
C52.30042.13511.27481.47023.04043.04042.36581.0918
H61.10232.06172.06173.04043.04041.81193.99293.9929
H71.10232.06172.06173.04043.04041.81193.99293.9929
H83.31822.08923.21621.09182.36583.99293.99292.9964
H93.31823.21622.08922.36581.09183.99293.99292.9964

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 121.171 C1 N3 C5 121.171
N2 C1 N3 93.880 N2 C1 H6 112.887
N2 C1 H7 112.887 N2 C4 C5 101.889
N2 C4 H8 123.771 N3 C1 H6 112.887
N3 C1 H7 112.887 N3 C5 C4 101.889
N3 C5 H9 123.771 C4 C5 H9 134.340
C5 C4 H8 134.340 H6 C1 H7 110.553
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability