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All results from a given calculation for C6H6 (Trimethylenecycopropane)

using model chemistry: MP2/CEP-121G

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/CEP-121G
 hartrees
Energy at 0K-36.688178
Energy at 298.15K 
HF Energy-36.168678
Nuclear repulsion energy93.448823
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/CEP-121G
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' 3087 3013 0.00      
2 A1' 1820 1776 0.00      
3 A1' 1489 1453 0.00      
4 A1' 732 715 0.00      
5 A1" 721 704 0.00      
6 A2' 3197 3120 0.00      
7 A2' 1075 1050 0.00      
8 A2' 457 446 0.00      
9 A2" 703 686 174.43      
10 A2" 150 146 3.38      
11 E' 3198 3121 22.69      
11 E' 3198 3121 22.69      
12 E' 3086 3012 20.16      
12 E' 3086 3012 20.16      
13 E' 1611 1572 2.20      
13 E' 1611 1572 2.20      
14 E' 1450 1415 7.20      
14 E' 1450 1415 7.20      
15 E' 1130 1103 5.85      
15 E' 1130 1103 5.85      
16 E' 753 735 6.10      
16 E' 753 735 6.10      
17 E' 213 208 0.13      
17 E' 213 208 0.13      
18 E" 757 739 0.00      
18 E" 757 739 0.00      
19 E" 609 594 0.00      
19 E" 609 594 0.00      
20 E" 124i 121i 0.00      
20 E" 124i 121i 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 19397.8 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 18932.3 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 MP2/CEP-121G
ABC
0.13068 0.13068 0.06534

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.862 0.000
C2 0.747 -0.431 0.000
C3 -0.747 -0.431 0.000
C4 0.000 2.229 0.000
C5 1.930 -1.114 0.000
C6 -1.930 -1.114 0.000
H7 -0.938 2.792 0.000
H8 0.938 2.792 0.000
H9 2.887 -0.584 0.000
H10 1.949 -2.208 0.000
H11 -1.949 -2.208 0.000
H12 -2.887 -0.584 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.49381.49381.36612.76262.76262.14512.14513.22863.63663.63663.2286
C21.49381.49382.76261.36612.76263.63663.22862.14512.14513.22863.6366
C31.49381.49382.76262.76261.36613.22863.63663.63663.22862.14512.1451
C41.36612.76262.76263.85993.85991.09381.09384.03014.84564.84564.0301
C52.76261.36612.76263.85993.85994.84564.03011.09381.09384.03014.8456
C62.76262.76261.36613.85993.85994.03014.84564.84564.03011.09381.0938
H72.14513.63663.22861.09384.84564.03011.87535.10095.77315.10093.8978
H82.14513.22863.63661.09384.03014.84561.87533.89785.10095.77315.1009
H93.22862.14513.63664.03011.09384.84565.10093.89781.87535.10095.7731
H103.63662.14513.22864.84561.09384.03015.77315.10091.87533.89785.1009
H113.63663.22862.14514.84564.03011.09385.10095.77315.10093.89781.8753
H123.22863.63662.14514.03014.84561.09383.89785.10095.77315.10091.8753

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 120.993 C1 C4 H8 120.993
C2 C1 C3 60.000 C2 C1 C4 150.000
C2 C3 C6 150.000 C2 C5 H9 120.993
C2 C5 H10 120.993 C3 C1 C4 150.000
C3 C2 C5 150.000 C3 C6 H11 120.993
C3 C6 H12 120.993 H7 C4 H8 118.013
H9 C5 H10 118.013 H11 C6 H12 118.013
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability