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: CCD/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3H 1A'
Energy calculated at CCD/6-31G*
 hartrees
Energy at 0K-231.345439
Energy at 298.15K-231.349873
HF Energy-230.553151
Nuclear repulsion energy188.775703
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 CCD/6-31G*
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' 3188 3017 0.00      
2 A1' 1944 1840 0.00      
3 A1' 1508 1427 0.00      
4 A1' 806 763 0.00      
5 A1" 756 715 0.00      
6 A2' 3274 3099 0.00      
7 A2' 1116 1056 0.00      
8 A2' 512 484 0.00      
9 A2" 894 847 129.19      
10 A2" 201 190 4.56      
11 E' 3275 3099 10.17      
11 E' 3275 3099 10.17      
12 E' 3187 3017 9.92      
12 E' 3187 3017 9.92      
13 E' 1736 1643 9.25      
13 E' 1736 1643 9.25      
14 E' 1474 1395 8.42      
14 E' 1474 1395 8.42      
15 E' 1153 1091 4.72      
15 E' 1153 1091 4.72      
16 E' 813 769 6.45      
16 E' 813 769 6.45      
17 E' 224 212 0.01      
17 E' 224 212 0.01      
18 E" 886 839 0.00      
18 E" 886 839 0.00      
19 E" 766 725 0.00      
19 E" 766 725 0.00      
20 E" 324 307 0.00      
20 E" 324 307 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 20936.2 cm-1
Scaled (by 0.9465) Zero Point Vibrational Energy (zpe) 19816.1 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 CCD/6-31G*
ABC
0.13718 0.13718 0.06859

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G*

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.838 0.000
C2 0.726 -0.419 0.000
C3 -0.726 -0.419 0.000
C4 0.000 2.173 0.000
C5 1.882 -1.086 0.000
C6 -1.882 -1.086 0.000
H7 -0.929 2.738 0.000
H8 0.929 2.738 0.000
H9 2.835 -0.564 0.000
H10 1.906 -2.173 0.000
H11 -1.906 -2.173 0.000
H12 -2.835 -0.564 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.45201.45201.33432.69162.69162.11442.11443.16333.56433.56433.1633
C21.45201.45202.69161.33432.69163.56433.16332.11442.11443.16333.5643
C31.45201.45202.69162.69161.33433.16333.56433.56433.16332.11442.1144
C41.33432.69162.69163.76313.76311.08741.08743.94074.74574.74573.9407
C52.69161.33432.69163.76313.76314.74573.94071.08741.08743.94074.7457
C62.69162.69161.33433.76313.76313.94074.74574.74573.94071.08741.0874
H72.11443.56433.16331.08744.74573.94071.85825.00735.67085.00733.8125
H82.11443.16333.56431.08743.94074.74571.85823.81255.00735.67085.0073
H93.16332.11443.56433.94071.08744.74575.00733.81251.85825.00735.6708
H103.56432.11443.16334.74571.08743.94075.67085.00731.85823.81255.0073
H113.56433.16332.11444.74573.94071.08745.00735.67085.00733.81251.8582
H123.16333.56432.11443.94074.74571.08743.81255.00735.67085.00731.8582

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 121.302 C1 C4 H8 121.302
C2 C1 C3 60.000 C2 C1 C4 150.000
C2 C3 C6 150.000 C2 C5 H9 121.302
C2 C5 H10 121.302 C3 C1 C4 150.000
C3 C2 C5 150.000 C3 C6 H11 121.302
C3 C6 H12 121.302 H7 C4 H8 117.396
H9 C5 H10 117.396 H11 C6 H12 117.396
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability