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

using model chemistry: B2PLYP=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 B2PLYP=FULL/6-31G*
 hartrees
Energy at 0K-225.885297
Energy at 298.15K-225.891307
HF Energy-225.648034
Nuclear repulsion energy166.607091
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 B2PLYP=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 3276 3107 14.69      
2 A1 3107 2947 0.03      
3 A1 1720 1632 21.69      
4 A1 1459 1384 8.60      
5 A1 1417 1344 9.54      
6 A1 1275 1209 5.14      
7 A1 1051 997 2.26      
8 A1 942 894 12.66      
9 A2 1167 1107 0.00      
10 A2 908 862 0.00      
11 A2 547 519 0.00      
12 B1 3150 2987 0.04      
13 B1 1032 979 17.03      
14 B1 829 786 4.69      
15 B1 367 348 39.77      
16 B2 3262 3093 10.29      
17 B2 1785 1693 0.00      
18 B2 1412 1339 32.63      
19 B2 1267 1201 1.25      
20 B2 1099 1043 33.04      
21 B2 938 890 72.68      

Unscaled Zero Point Vibrational Energy (zpe) 16005.3 cm-1
Scaled (by 0.9484) Zero Point Vibrational Energy (zpe) 15179.5 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 B2PLYP=FULL/6-31G*
ABC
0.36264 0.30310 0.17049

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.204
N2 0.000 0.997 0.282
N3 0.000 -0.997 0.282
C4 0.000 0.726 -0.948
C5 0.000 -0.726 -0.948
H6 -0.894 0.000 1.834
H7 0.894 0.000 1.834
H8 0.000 1.473 -1.732
H9 0.000 -1.473 -1.732

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.35751.35752.27082.27081.09431.09433.28453.2845
N21.35751.99381.25942.11732.05012.05012.06963.1872
N31.35751.99382.11731.25942.05012.05013.18722.0696
C42.27081.25942.11731.45303.01143.01141.08282.3353
C52.27082.11731.25941.45303.01143.01142.33531.0828
H61.09432.05012.05013.01143.01141.78833.96093.9609
H71.09432.05012.05013.01143.01141.78833.96093.9609
H83.28452.06963.18721.08282.33533.96093.96092.9465
H93.28453.18722.06962.33531.08283.96093.96092.9465

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 120.348 C1 N3 C5 120.348
N2 C1 N3 94.505 N2 C1 H6 113.036
N2 C1 H7 113.036 N2 C4 C5 102.400
N2 C4 H8 123.995 N3 C1 H6 113.036
N3 C1 H7 113.036 N3 C5 C4 102.400
N3 C5 H9 123.995 C4 C5 H9 133.605
C5 C4 H8 133.605 H6 C1 H7 109.590
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability