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

using model chemistry: MP2=FULL/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 MP2=FULL/6-31G**
 hartrees
Energy at 0K-225.471400
Energy at 298.15K-225.477405
HF Energy-224.730247
Nuclear repulsion energy166.590756
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=FULL/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 3329 3111 10.41      
2 A1 3158 2951 0.18      
3 A1 1704 1592 19.78      
4 A1 1469 1372 7.82      
5 A1 1427 1334 10.52      
6 A1 1287 1203 4.76      
7 A1 1069 999 1.37      
8 A1 947 885 11.99      
9 A2 1166 1089 0.00      
10 A2 890 831 0.00      
11 A2 540 504 0.00      
12 B1 3218 3007 0.11      
13 B1 1030 962 19.95      
14 B1 827 773 4.59      
15 B1 354 331 39.84      
16 B2 3315 3097 6.83      
17 B2 1771 1655 0.18      
18 B2 1423 1330 31.32      
19 B2 1273 1189 0.53      
20 B2 1105 1033 31.44      
21 B2 943 881 67.82      

Unscaled Zero Point Vibrational Energy (zpe) 16122.0 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 15064.4 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=FULL/6-31G**
ABC
0.36357 0.30238 0.17045

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.205
N2 0.000 0.997 0.284
N3 0.000 -0.997 0.284
C4 0.000 0.724 -0.951
C5 0.000 -0.724 -0.951
H6 -0.893 0.000 1.828
H7 0.893 0.000 1.828
H8 0.000 1.469 -1.730
H9 0.000 -1.469 -1.730

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.35691.35692.27392.27391.08901.08903.28183.2818
N21.35691.99371.26472.11812.04322.04322.06863.1839
N31.35691.99372.11811.26472.04322.04323.18392.0686
C42.27391.26472.11811.44793.00723.00721.07802.3273
C52.27392.11811.26471.44793.00723.00722.32731.0780
H61.08902.04322.04323.00723.00721.78613.95153.9515
H71.08902.04322.04323.00723.00721.78613.95153.9515
H83.28182.06863.18391.07802.32733.95153.95152.9381
H93.28183.18392.06862.32731.07803.95153.95152.9381

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 120.264 C1 N3 C5 120.264
N2 C1 N3 94.551 N2 C1 H6 112.847
N2 C1 H7 112.847 N2 C4 C5 102.461
N2 C4 H8 123.816 N3 C1 H6 112.847
N3 C1 H7 112.847 N3 C5 C4 102.461
N3 C5 H9 123.816 C4 C5 H9 133.723
C5 C4 H8 133.723 H6 C1 H7 110.182
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability