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

using model chemistry: MP4/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP4/6-31G*
 hartrees
Energy at 0K-225.476114
Energy at 298.15K-225.482059
HF Energy-224.721870
Nuclear repulsion energy165.882382
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 MP4/6-31G*
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 3252 3105        
2 A1 3085 2946        
3 A1 1699 1622        
4 A1 1466 1400        
5 A1 1410 1347        
6 A1 1271 1214        
7 A1 1047 1000        
8 A1 932 890        
9 A2 1156 1104        
10 A2 849 811        
11 A2 530 506        
12 B1 3134 2993        
13 B1 1029 982        
14 B1 802 765        
15 B1 349 333        
16 B2 3238 3091        
17 B2 1755 1675        
18 B2 1412 1348        
19 B2 1253 1197        
20 B2 1092 1043        
21 B2 936 893        

Unscaled Zero Point Vibrational Energy (zpe) 15847.4 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 15131.1 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 MP4/6-31G*
ABC
0.36103 0.29938 0.16902

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.212
N2 0.000 0.997 0.284
N3 0.000 -0.997 0.284
C4 0.000 0.729 -0.955
C5 0.000 -0.729 -0.955
H6 -0.900 0.000 1.841
H7 0.900 0.000 1.841
H8 0.000 1.484 -1.737
H9 0.000 -1.484 -1.737

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.36181.36182.28602.28601.09801.09803.30103.3010
N21.36181.99471.26802.12532.05612.05612.07903.2006
N31.36181.99472.12531.26802.05612.05613.20062.0790
C42.28601.26802.12531.45853.02643.02641.08692.3475
C52.28602.12531.26801.45853.02643.02642.34751.0869
H61.09802.05612.05613.02643.02641.79923.97673.9767
H71.09802.05612.05613.02643.02641.79923.97673.9767
H83.30102.07903.20061.08692.34753.97673.97672.9685
H93.30103.20062.07902.34751.08693.97673.97672.9685

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 120.706 C1 N3 C5 120.706
N2 C1 N3 94.173 N2 C1 H6 112.978
N2 C1 H7 112.978 N2 C4 C5 102.207
N2 C4 H8 123.796 N3 C1 H6 112.978
N3 C1 H7 112.978 N3 C5 C4 102.207
N3 C5 H9 123.796 C4 C5 H9 133.996
C5 C4 H8 133.996 H6 C1 H7 110.033
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability