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/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-231.416976
Energy at 298.15K-231.421222
HF Energy-230.572555
Nuclear repulsion energy188.580745
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/6-31+G**
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' 3214 3039 0.00      
2 A1' 1919 1814 0.00      
3 A1' 1515 1433 0.00      
4 A1' 798 754 0.00      
5 A1" 743 703 0.00      
6 A2' 3309 3128 0.00      
7 A2' 1119 1058 0.00      
8 A2' 508 480 0.00      
9 A2" 884 836 141.64      
10 A2" 171 162 8.06      
11 E' 3309 3129 9.90      
11 E' 3309 3129 9.90      
12 E' 3214 3038 13.54      
12 E' 3214 3038 13.54      
13 E' 1715 1621 4.88      
13 E' 1715 1621 4.88      
14 E' 1479 1398 9.45      
14 E' 1479 1398 9.45      
15 E' 1150 1088 5.90      
15 E' 1150 1088 5.90      
16 E' 807 763 11.23      
16 E' 807 763 11.23      
17 E' 223 211 0.00      
17 E' 223 211 0.00      
18 E" 877 829 0.00      
18 E" 877 829 0.00      
19 E" 747 706 0.00      
19 E" 747 706 0.00      
20 E" 269 255 0.00      
20 E" 269 255 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 20879.4 cm-1
Scaled (by 0.9454) Zero Point Vibrational Energy (zpe) 19739.4 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/6-31+G**
ABC
0.13676 0.13676 0.06838

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

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.839 0.000
C2 0.727 -0.419 0.000
C3 -0.727 -0.419 0.000
C4 0.000 2.178 0.000
C5 1.886 -1.089 0.000
C6 -1.886 -1.089 0.000
H7 -0.927 2.736 0.000
H8 0.927 2.736 0.000
H9 2.833 -0.565 0.000
H10 1.906 -2.171 0.000
H11 -1.906 -2.171 0.000
H12 -2.833 -0.565 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.45311.45311.33882.69692.69692.11152.11153.16193.56263.56263.1619
C21.45311.45312.69691.33882.69693.56263.16192.11152.11153.16193.5626
C31.45311.45312.69692.69691.33883.16193.56263.56263.16192.11152.1115
C41.33882.69692.69693.77203.77201.08221.08223.94334.74804.74803.9433
C52.69691.33882.69693.77203.77204.74803.94331.08221.08223.94334.7480
C62.69692.69691.33883.77203.77203.94334.74804.74803.94331.08221.0822
H72.11153.56263.16191.08224.74803.94331.85415.00375.66615.00373.8119
H82.11153.16193.56261.08223.94334.74801.85413.81195.00375.66615.0037
H93.16192.11153.56263.94331.08224.74805.00373.81191.85415.00365.6661
H103.56262.11153.16194.74801.08223.94335.66615.00371.85413.81195.0036
H113.56263.16192.11154.74803.94331.08225.00375.66615.00363.81191.8541
H123.16193.56262.11153.94334.74801.08223.81195.00375.66615.00361.8541

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 121.058 C1 C4 H8 121.058
C2 C1 C3 60.000 C2 C1 C4 150.000
C2 C3 C6 150.000 C2 C5 H9 121.058
C2 C5 H10 121.058 C3 C1 C4 150.000
C3 C2 C5 150.000 C3 C6 H11 121.058
C3 C6 H12 121.058 H7 C4 H8 117.884
H9 C5 H10 117.884 H11 C6 H12 117.884
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability