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

using model chemistry: CCSD(T)=FULL/6-311+G(3df,2p)

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)=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-225.852362
Energy at 298.15K-225.858360
HF Energy-224.803275
Nuclear repulsion energy166.716576
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)=FULL/6-311+G(3df,2p)
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 3249 3249        
2 A1 3090 3090        
3 A1 1691 1691        
4 A1 1434 1434        
5 A1 1403 1403        
6 A1 1257 1257        
7 A1 1039 1039        
8 A1 935 935        
9 A2 1163 1163        
10 A2 905 905        
11 A2 534 534        
12 B1 3136 3136        
13 B1 1016 1016        
14 B1 821 821        
15 B1 353 353        
16 B2 3235 3235        
17 B2 1754 1754        
18 B2 1406 1406        
19 B2 1255 1255        
20 B2 1088 1088        
21 B2 933 933        

Unscaled Zero Point Vibrational Energy (zpe) 15848.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15848.3 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)=FULL/6-311+G(3df,2p)
ABC
0.36265 0.30371 0.17068

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/6-311+G(3df,2p)

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 -0.947
C5 0.000 -0.726 -0.947
H6 -0.894 0.000 1.828
H7 0.894 0.000 1.828
H8 0.000 1.473 -1.727
H9 0.000 -1.473 -1.727

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.35821.35822.27042.27041.09051.09053.28053.2805
N21.35821.99401.25812.11652.04582.04582.06453.1835
N31.35821.99402.11651.25812.04582.04583.18352.0645
C42.27041.25812.11651.45283.00493.00491.07962.3333
C52.27042.11651.25811.45283.00493.00492.33331.0796
H61.09052.04582.04583.00493.00491.78853.95103.9510
H71.09052.04582.04583.00493.00491.78853.95103.9510
H83.28052.06453.18351.07962.33333.95103.95102.9451
H93.28053.18352.06452.33331.07963.95103.95102.9451

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 120.355 C1 N3 C5 120.355
N2 C1 N3 94.452 N2 C1 H6 112.873
N2 C1 H7 112.873 N2 C4 C5 102.419
N2 C4 H8 123.865 N3 C1 H6 112.873
N3 C1 H7 112.873 N3 C5 C4 102.419
N3 C5 H9 123.865 C4 C5 H9 133.716
C5 C4 H8 133.716 H6 C1 H7 110.170
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability