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: CID/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 CID/3-21G
 hartrees
Energy at 0K-229.731251
Energy at 298.15K-229.735900
HF Energy-229.259084
Nuclear repulsion energy189.067747
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 CID/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' 3228 3007 0.00      
2 A1' 1959 1825 0.00      
3 A1' 1579 1471 0.00      
4 A1' 782 728 0.00      
5 A1" 800 745 0.00      
6 A2' 3305 3079 0.00      
7 A2' 1178 1097 0.00      
8 A2' 542 505 0.00      
9 A2" 993 925 150.98      
10 A2" 208 194 9.28      
11 E' 3306 3080 10.00      
11 E' 3306 3080 10.00      
12 E' 3226 3005 8.86      
12 E' 3226 3005 8.86      
13 E' 1777 1656 5.70      
13 E' 1777 1656 5.70      
14 E' 1548 1442 9.46      
14 E' 1548 1442 9.46      
15 E' 1206 1123 12.34      
15 E' 1206 1123 12.34      
16 E' 795 740 10.64      
16 E' 795 740 10.64      
17 E' 238 222 0.11      
17 E' 238 222 0.11      
18 E" 986 919 0.00      
18 E" 986 919 0.00      
19 E" 809 753 0.00      
19 E" 809 753 0.00      
20 E" 319 297 0.00      
20 E" 319 297 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 21494.9 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 20024.6 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 CID/3-21G
ABC
0.13754 0.13754 0.06877

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

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.846 0.000
C2 0.732 -0.423 0.000
C3 -0.732 -0.423 0.000
C4 0.000 2.167 0.000
C5 1.877 -1.084 0.000
C6 -1.877 -1.084 0.000
H7 -0.922 2.733 0.000
H8 0.922 2.733 0.000
H9 2.828 -0.568 0.000
H10 1.906 -2.165 0.000
H11 -1.906 -2.165 0.000
H12 -2.828 -0.568 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.46491.46491.32142.69162.69162.10062.10063.16183.56343.56343.1618
C21.46491.46492.69161.32142.69163.56343.16182.10062.10063.16183.5634
C31.46491.46492.69162.69161.32143.16183.56343.56343.16182.10062.1006
C41.32142.69162.69163.75363.75361.08181.08183.93454.73294.73293.9345
C52.69161.32142.69163.75363.75364.73293.93451.08181.08183.93454.7329
C62.69162.69161.32143.75363.75363.93454.73294.73293.93451.08181.0818
H72.10063.56343.16181.08184.73293.93451.84374.99615.65604.99613.8122
H82.10063.16183.56341.08183.93454.73291.84373.81224.99615.65604.9961
H93.16182.10063.56343.93451.08184.73294.99613.81221.84374.99615.6560
H103.56342.10063.16184.73291.08183.93455.65604.99611.84373.81234.9961
H113.56343.16182.10064.73293.93451.08184.99615.65604.99613.81231.8437
H123.16183.56342.10063.93454.73291.08183.81224.99615.65604.99611.8437

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 121.553 C1 C4 H8 121.553
C2 C1 C3 60.000 C2 C1 C4 150.000
C2 C3 C6 150.000 C2 C5 H9 121.553
C2 C5 H10 121.553 C3 C1 C4 150.000
C3 C2 C5 150.000 C3 C6 H11 121.553
C3 C6 H12 121.553 H7 C4 H8 116.893
H9 C5 H10 116.893 H11 C6 H12 116.893
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability