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: B2PLYP/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 B2PLYP/6-31G*
 hartrees
Energy at 0K-231.834136
Energy at 298.15K-231.838628
HF Energy-231.580533
Nuclear repulsion energy189.090585
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 B2PLYP/6-31G*
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' 3192 3030 0.00      
2 A1' 1900 1804 0.00      
3 A1' 1512 1435 0.00      
4 A1' 804 763 0.00      
5 A1" 756 717 0.00      
6 A2' 3279 3112 0.00      
7 A2' 1115 1059 0.00      
8 A2' 509 483 0.00      
9 A2" 890 845 124.99      
10 A2" 214 203 3.95      
11 E' 3279 3113 9.43      
11 E' 3279 3113 9.44      
12 E' 3192 3029 10.67      
12 E' 3192 3029 10.67      
13 E' 1697 1611 5.98      
13 E' 1697 1611 5.98      
14 E' 1474 1400 7.61      
14 E' 1474 1400 7.61      
15 E' 1146 1088 4.30      
15 E' 1146 1088 4.30      
16 E' 809 768 6.01      
16 E' 809 768 6.01      
17 E' 224 212 0.00      
17 E' 224 212 0.00      
18 E" 884 839 0.00      
18 E" 884 839 0.00      
19 E" 771 731 0.00      
19 E" 771 731 0.00      
20 E" 346 328 0.00      
20 E" 346 328 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 20907.0 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 19845.0 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 B2PLYP/6-31G*
ABC
0.13760 0.13760 0.06880

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.834 0.000
C2 0.722 -0.417 0.000
C3 -0.722 -0.417 0.000
C4 0.000 2.170 0.000
C5 1.880 -1.085 0.000
C6 -1.880 -1.085 0.000
H7 -0.927 2.733 0.000
H8 0.927 2.733 0.000
H9 2.831 -0.564 0.000
H10 1.904 -2.170 0.000
H11 -1.904 -2.170 0.000
H12 -2.831 -0.564 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.44461.44461.33642.68642.68642.11362.11363.15713.55623.55623.1571
C21.44461.44462.68641.33642.68643.55623.15712.11362.11363.15713.5562
C31.44461.44462.68642.68641.33643.15713.55623.55623.15712.11362.1136
C41.33642.68642.68643.75943.75941.08471.08473.93574.73934.73933.9357
C52.68641.33642.68643.75943.75944.73933.93571.08471.08473.93574.7393
C62.68642.68641.33643.75943.75943.93574.73934.73933.93571.08471.0847
H72.11363.55623.15711.08474.73933.93571.85444.99945.66174.99943.8073
H82.11363.15713.55621.08473.93574.73931.85443.80734.99945.66174.9994
H93.15712.11363.55623.93571.08474.73934.99943.80731.85444.99945.6617
H103.55622.11363.15714.73931.08473.93575.66174.99941.85443.80734.9994
H113.55623.15712.11364.73933.93571.08474.99945.66174.99943.80731.8544
H123.15713.55622.11363.93574.73931.08473.80734.99945.66174.99941.8544

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 121.264 C1 C4 H8 121.264
C2 C1 C3 60.000 C2 C1 C4 150.000
C2 C3 C6 150.000 C2 C5 H9 121.264
C2 C5 H10 121.264 C3 C1 C4 150.000
C3 C2 C5 150.000 C3 C6 H11 121.264
C3 C6 H12 121.264 H7 C4 H8 117.471
H9 C5 H10 117.471 H11 C6 H12 117.471
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.116      
2 C 0.116      
3 C 0.116      
4 C -0.443      
5 C -0.443      
6 C -0.443      
7 H 0.164      
8 H 0.164      
9 H 0.164      
10 H 0.164      
11 H 0.164      
12 H 0.164      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.443 0.000 0.000
y 0.000 -31.443 0.000
z 0.000 0.000 -38.820
Traceless
 xyz
x 3.689 0.000 0.000
y 0.000 3.689 0.000
z 0.000 0.000 -7.377
Polar
3z2-r2-14.754
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 13.694 0.000 0.000
y 0.000 13.695 0.000
z 0.000 0.000 3.168


<r2> (average value of r2) Å2
<r2> 168.483
(<r2>)1/2 12.980