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

using model chemistry: CCSD=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 CCSD=FULL/6-31G*
 hartrees
Energy at 0K-225.467500
Energy at 298.15K-225.473508
HF Energy-224.723771
Nuclear repulsion energy166.433385
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=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 3274 3110 11.51      
2 A1 3108 2952 0.60      
3 A1 1765 1676 23.25      
4 A1 1485 1410 5.69      
5 A1 1437 1364 10.69      
6 A1 1286 1222 3.77      
7 A1 1064 1010 1.36      
8 A1 957 909 14.77      
9 A2 1178 1118 0.00      
10 A2 888 843 0.00      
11 A2 542 514 0.00      
12 B1 3155 2997 0.44      
13 B1 1046 994 20.39      
14 B1 826 784 7.35      
15 B1 358 340 38.90      
16 B2 3260 3096 8.19      
17 B2 1823 1731 0.14      
18 B2 1446 1374 30.45      
19 B2 1275 1211 1.89      
20 B2 1107 1051 33.23      
21 B2 949 901 66.92      

Unscaled Zero Point Vibrational Energy (zpe) 16113.0 cm-1
Scaled (by 0.9498) Zero Point Vibrational Energy (zpe) 15304.1 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 CCSD=FULL/6-31G*
ABC
0.36203 0.30230 0.17014

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.207
N2 0.000 0.997 0.281
N3 0.000 -0.997 0.281
C4 0.000 0.727 -0.948
C5 0.000 -0.727 -0.948
H6 -0.898 0.000 1.835
H7 0.898 0.000 1.835
H8 0.000 1.475 -1.734
H9 0.000 -1.475 -1.734

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.36081.36082.27502.27501.09571.09573.29063.2906
N21.36081.99451.25892.11822.05312.05312.07133.1899
N31.36081.99452.11821.25892.05312.05313.18992.0713
C42.27501.25892.11821.45493.01393.01391.08482.3387
C52.27502.11821.25891.45493.01393.01392.33871.0848
H61.09572.05312.05313.01393.01391.79563.96523.9652
H71.09572.05312.05313.01393.01391.79563.96523.9652
H83.29062.07133.18991.08482.33873.96523.96522.9507
H93.29063.18992.07132.33871.08483.96523.96522.9507

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 120.500 C1 N3 C5 120.500
N2 C1 N3 94.250 N2 C1 H6 112.955
N2 C1 H7 112.955 N2 C4 C5 102.375
N2 C4 H8 124.036 N3 C1 H6 112.955
N3 C1 H7 112.955 N3 C5 C4 102.375
N3 C5 H9 124.036 C4 C5 H9 133.588
C5 C4 H8 133.588 H6 C1 H7 110.051
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability