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

using model chemistry: CCSD(T)/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 CCSD(T)/6-31G*
 hartrees
Energy at 0K-225.474527
Energy at 298.15K-225.480470
HF Energy-224.722260
Nuclear repulsion energy165.966652
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 CCSD(T)/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 3251 3128        
2 A1 3084 2967        
3 A1 1717 1652        
4 A1 1470 1415        
5 A1 1419 1365        
6 A1 1275 1227        
7 A1 1050 1010        
8 A1 941 906        
9 A2 1159 1115        
10 A2 847 815        
11 A2 523 503        
12 B1 3131 3012        
13 B1 1030 991        
14 B1 803 772        
15 B1 346 333        
16 B2 3237 3114        
17 B2 1774 1707        
18 B2 1421 1367        
19 B2 1258 1210        
20 B2 1094 1052        
21 B2 936 901        

Unscaled Zero Point Vibrational Energy (zpe) 15882.8 cm-1
Scaled (by 0.9621) Zero Point Vibrational Energy (zpe) 15280.9 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 CCSD(T)/6-31G*
ABC
0.36130 0.29975 0.16919

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/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 0.283
N3 0.000 -0.997 0.283
C4 0.000 0.729 -0.954
C5 0.000 -0.729 -0.954
H6 -0.900 0.000 1.841
H7 0.900 0.000 1.841
H8 0.000 1.482 -1.737
H9 0.000 -1.482 -1.737

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.36261.36262.28472.28471.09771.09773.30003.3000
N21.36261.99491.26602.12352.05652.05652.07743.1982
N31.36261.99492.12351.26602.05652.05653.19822.0774
C42.28471.26602.12351.45703.02473.02471.08672.3451
C52.28472.12351.26601.45703.02473.02472.34511.0867
H61.09772.05652.05653.02473.02471.79953.97533.9753
H71.09772.05652.05653.02473.02471.79953.97533.9753
H83.30002.07743.19821.08672.34513.97533.97532.9641
H93.30003.19822.07742.34511.08673.97533.97532.9641

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 120.681 C1 N3 C5 120.681
N2 C1 N3 94.111 N2 C1 H6 112.973
N2 C1 H7 112.973 N2 C4 C5 102.263
N2 C4 H8 123.834 N3 C1 H6 112.973
N3 C1 H7 112.973 N3 C5 C4 102.263
N3 C5 H9 123.834 C4 C5 H9 133.902
C5 C4 H8 133.902 H6 C1 H7 110.097
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability