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: QCISD/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 QCISD/cc-pVDZ
 hartrees
Energy at 0K-231.405651
Energy at 298.15K-231.410106
HF Energy-230.570286
Nuclear repulsion energy187.201656
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 QCISD/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1' 3171 3043 0.00      
2 A1' 1918 1840 0.00      
3 A1' 1481 1421 0.00      
4 A1' 790 758 0.00      
5 A1" 740 710 0.00      
6 A2' 3270 3137 0.00      
7 A2' 1100 1055 0.00      
8 A2' 496 476 0.00      
9 A2" 898 861 99.61      
10 A2" 204 196 6.09      
11 E' 3270 3137 7.77      
11 E' 3270 3137 7.77      
12 E' 3171 3042 9.82      
12 E' 3171 3042 9.82      
13 E' 1708 1639 7.17      
13 E' 1708 1639 7.17      
14 E' 1447 1389 9.08      
14 E' 1447 1389 9.08      
15 E' 1131 1085 5.13      
15 E' 1131 1085 5.13      
16 E' 796 763 9.43      
16 E' 796 763 9.43      
17 E' 219 210 0.00      
17 E' 219 210 0.00      
18 E" 891 855 0.00      
18 E" 891 855 0.00      
19 E" 760 729 0.00      
19 E" 760 729 0.00      
20 E" 335 322 0.00      
20 E" 335 322 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 20761.2 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 19918.3 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 QCISD/cc-pVDZ
ABC
0.13491 0.13491 0.06745

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

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.846 0.000
C2 0.733 -0.423 0.000
C3 -0.733 -0.423 0.000
C4 0.000 2.192 0.000
C5 1.898 -1.096 0.000
C6 -1.898 -1.096 0.000
H7 -0.940 2.755 0.000
H8 0.940 2.755 0.000
H9 2.856 -0.563 0.000
H10 1.916 -2.191 0.000
H11 -1.916 -2.191 0.000
H12 -2.856 -0.563 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.46551.46551.34552.71542.71542.12752.12753.18453.59113.59113.1845
C21.46551.46552.71541.34552.71543.59113.18452.12752.12753.18453.5911
C31.46551.46552.71542.71541.34553.18453.59113.59113.18452.12752.1275
C41.34552.71542.71543.79603.79601.09571.09573.96794.78334.78333.9679
C52.71541.34552.71543.79603.79604.78333.96791.09571.09573.96794.7833
C62.71542.71541.34553.79603.79603.96794.78334.78333.96791.09571.0957
H72.12753.59113.18451.09574.78333.96791.87995.04145.71135.04143.8313
H82.12753.18453.59111.09573.96794.78331.87993.83135.04145.71135.0414
H93.18452.12753.59113.96791.09574.78335.04143.83131.87995.04145.7113
H103.59112.12753.18454.78331.09573.96795.71135.04141.87993.83135.0414
H113.59113.18452.12754.78333.96791.09575.04145.71135.04143.83131.8799
H123.18453.59112.12753.96794.78331.09573.83135.04145.71135.04141.8799

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 120.925 C1 C4 H8 120.925
C2 C1 C3 60.000 C2 C1 C4 150.000
C2 C3 C6 150.000 C2 C5 H9 120.925
C2 C5 H10 120.925 C3 C1 C4 150.000
C3 C2 C5 150.000 C3 C6 H11 120.925
C3 C6 H12 120.925 H7 C4 H8 118.150
H9 C5 H10 118.149 H11 C6 H12 118.149
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability