return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C6H6 (Trimethylenecycopropane)

using model chemistry: MP2/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-231.354806
Energy at 298.15K-231.359231
HF Energy-230.570221
Nuclear repulsion energy187.446800
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/cc-pVDZ
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' 3187 3036 0.00      
2 A1' 1896 1806 0.00      
3 A1' 1474 1404 0.00      
4 A1' 792 755 0.00      
5 A1" 745 710 0.00      
6 A2' 3295 3139 0.00      
7 A2' 1092 1040 0.00      
8 A2' 493 470 0.00      
9 A2" 879 837 105.81      
10 A2" 206 196 6.18      
11 E' 3295 3139 4.52      
11 E' 3295 3139 4.52      
12 E' 3186 3035 4.78      
12 E' 3186 3035 4.78      
13 E' 1677 1597 6.58      
13 E' 1677 1597 6.58      
14 E' 1442 1373 7.57      
14 E' 1442 1373 7.57      
15 E' 1124 1071 1.84      
15 E' 1124 1071 1.84      
16 E' 801 763 4.09      
16 E' 801 763 4.09      
17 E' 217 207 0.03      
17 E' 217 207 0.03      
18 E" 871 830 0.00      
18 E" 871 830 0.00      
19 E" 759 723 0.00      
19 E" 759 723 0.00      
20 E" 330 315 0.00      
20 E" 330 315 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 20732.3 cm-1
Scaled (by 0.9525) Zero Point Vibrational Energy (zpe) 19747.6 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/cc-pVDZ
ABC
0.13525 0.13525 0.06763

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/cc-pVDZ

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.841 0.000
C2 0.729 -0.421 0.000
C3 -0.729 -0.421 0.000
C4 0.000 2.190 0.000
C5 1.897 -1.095 0.000
C6 -1.897 -1.095 0.000
H7 -0.940 2.750 0.000
H8 0.940 2.750 0.000
H9 2.852 -0.561 0.000
H10 1.911 -2.190 0.000
H11 -1.911 -2.190 0.000
H12 -2.852 -0.561 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.45741.45741.34892.71082.71082.12772.12773.17783.58333.58333.1778
C21.45741.45742.71081.34892.71083.58333.17782.12772.12773.17783.5833
C31.45741.45742.71082.71081.34893.17783.58333.58333.17782.12772.1277
C41.34892.71082.71083.79373.79371.09441.09443.96234.77874.77873.9623
C52.71081.34892.71083.79373.79374.77873.96231.09441.09443.96234.7787
C62.71082.71081.34893.79373.79373.96234.77874.77873.96231.09441.0944
H72.12773.58333.17781.09444.77873.96231.88105.03405.70375.03403.8227
H82.12773.17783.58331.09443.96234.77871.88103.82275.03405.70375.0340
H93.17782.12773.58333.96231.09444.77875.03403.82271.88105.03405.7037
H103.58332.12773.17784.77871.09443.96235.70375.03401.88103.82275.0340
H113.58333.17782.12774.77873.96231.09445.03405.70375.03403.82271.8810
H123.17783.58332.12773.96234.77871.09443.82275.03405.70375.03401.8810

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 120.758 C1 C4 H8 120.758
C2 C1 C3 60.000 C2 C1 C4 150.000
C2 C3 C6 150.000 C2 C5 H9 120.758
C2 C5 H10 120.758 C3 C1 C4 150.000
C3 C2 C5 150.000 C3 C6 H11 120.758
C3 C6 H12 120.758 H7 C4 H8 118.483
H9 C5 H10 118.483 H11 C6 H12 118.483
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability