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All results from a given calculation for C6H6 (Trimethylenecycopropane)

using model chemistry: MP2/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3H 1A'
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-229.782123
Energy at 298.15K-229.786431
HF Energy-229.255848
Nuclear repulsion energy187.575195
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 MP2/3-21G*
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' 3165 3011 0.00      
2 A1' 1848 1758 0.00      
3 A1' 1549 1474 0.00      
4 A1' 744 708 0.00      
5 A1" 777 739 0.00      
6 A2' 3249 3091 0.00      
7 A2' 1142 1087 0.00      
8 A2' 528 502 0.00      
9 A2" 915 871 143.68      
10 A2" 190 181 7.79      
11 E' 3250 3091 9.26      
11 E' 3250 3091 9.26      
12 E' 3164 3010 7.13      
12 E' 3164 3010 7.13      
13 E' 1671 1590 5.27      
13 E' 1671 1590 5.27      
14 E' 1513 1439 6.77      
14 E' 1513 1439 6.77      
15 E' 1170 1113 7.71      
15 E' 1170 1113 7.71      
16 E' 761 724 5.84      
16 E' 761 724 5.84      
17 E' 231 220 0.21      
17 E' 231 220 0.21      
18 E" 906 862 0.00      
18 E" 906 862 0.00      
19 E" 767 730 0.00      
19 E" 767 730 0.00      
20 E" 268 255 0.00      
20 E" 268 255 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 20753.5 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 19742.8 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 MP2/3-21G*
ABC
0.13529 0.13529 0.06764

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G*

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.850 0.000
C2 0.737 -0.425 0.000
C3 -0.737 -0.425 0.000
C4 0.000 2.187 0.000
C5 1.894 -1.093 0.000
C6 -1.894 -1.093 0.000
H7 -0.927 2.754 0.000
H8 0.927 2.754 0.000
H9 2.849 -0.574 0.000
H10 1.922 -2.180 0.000
H11 -1.922 -2.180 0.000
H12 -2.849 -0.574 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.47301.47301.33612.71362.71362.11752.11753.18523.58833.58833.1852
C21.47301.47302.71361.33612.71363.58833.18522.11752.11743.18523.5883
C31.47301.47302.71362.71361.33613.18523.58833.58833.18522.11742.1175
C41.33612.71362.71363.78723.78721.08691.08693.96714.77064.77063.9671
C52.71361.33612.71363.78723.78724.77063.96711.08691.08693.96714.7706
C62.71362.71361.33613.78723.78723.96714.77064.77063.96711.08691.0869
H72.11753.58833.18521.08694.77063.96711.85365.03345.69745.03343.8437
H82.11753.18523.58831.08693.96714.77061.85363.84375.03345.69745.0334
H93.18522.11753.58833.96711.08694.77065.03343.84371.85365.03345.6974
H103.58832.11743.18524.77061.08693.96715.69745.03341.85363.84375.0334
H113.58833.18522.11744.77063.96711.08695.03345.69745.03343.84371.8536
H123.18523.58832.11753.96714.77061.08693.84375.03345.69745.03341.8536

picture of Trimethylenecycopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 60.000 C1 C2 C5 150.000
C1 C3 C2 60.000 C1 C3 C6 150.000
C1 C4 H7 121.491 C1 C4 H8 121.491
C2 C1 C3 60.000 C2 C1 C4 150.000
C2 C3 C6 150.000 C2 C5 H9 121.491
C2 C5 H10 121.491 C3 C1 C4 150.000
C3 C2 C5 150.000 C3 C6 H11 121.491
C3 C6 H12 121.491 H7 C4 H8 117.018
H9 C5 H10 117.018 H11 C6 H12 117.018
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability