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 C8H6 (Calicene)

using model chemistry: HF/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/CEP-31G*
 hartrees
Energy at 0K-47.225103
Energy at 298.15K-47.230295
HF Energy-47.225103
Nuclear repulsion energy146.260814
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 HF/CEP-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 3502 3145 16.50      
2 A1 3419 3070 27.12      
3 A1 3392 3046 9.48      
4 A1 1925 1728 856.12      
5 A1 1687 1515 218.04      
6 A1 1612 1448 345.37      
7 A1 1516 1362 261.63      
8 A1 1302 1169 24.82      
9 A1 1151 1034 31.33      
10 A1 1081 971 20.67      
11 A1 1026 921 4.49      
12 A1 934 839 98.24      
13 A1 514 461 0.23      
14 A2 1042 936 0.00      
15 A2 1014 911 0.00      
16 A2 839 754 0.00      
17 A2 626 562 0.00      
18 A2 226 203 0.00      
19 B1 1034 929 2.18      
20 B1 873 784 155.06      
21 B1 828 743 65.37      
22 B1 636 571 14.97      
23 B1 495 445 11.01      
24 B1 143 128 8.46      
25 B2 3459 3106 4.43      
26 B2 3410 3062 44.47      
27 B2 3382 3037 1.27      
28 B2 1725 1549 1.00      
29 B2 1466 1316 1.81      
30 B2 1324 1189 3.79      
31 B2 1228 1103 16.17      
32 B2 1178 1058 9.01      
33 B2 1037 931 6.73      
34 B2 875 786 2.77      
35 B2 518 465 0.58      
36 B2 152 136 2.05      

Unscaled Zero Point Vibrational Energy (zpe) 25283.9 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 22704.9 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 HF/CEP-31G*
ABC
0.22261 0.04673 0.03862

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.047
C2 0.000 0.000 1.322
C3 0.000 0.668 2.592
C4 0.000 -0.668 2.592
C5 0.000 1.180 -0.922
C6 0.000 -1.180 -0.922
C7 0.000 0.736 -2.218
C8 0.000 -0.736 -2.218
H9 0.000 1.589 3.147
H10 0.000 -1.589 3.147
H11 0.000 2.204 -0.583
H12 0.000 -2.204 -0.583
H13 0.000 1.354 -3.102
H14 0.000 -1.354 -3.102

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14
C11.36852.72202.72201.46921.46922.29262.29263.56753.56752.26852.26853.34193.3419
C21.36851.43541.43542.53502.53503.61543.61542.42032.42032.91342.91344.62634.6263
C32.72201.43541.33683.55093.97044.81045.01081.07502.32453.52734.28195.73516.0425
C42.72201.43541.33683.97043.55095.01084.81042.32451.07504.28193.52736.04255.7351
C51.46922.53503.55093.97042.36021.37002.31344.08984.92201.07843.40112.18703.3430
C61.46922.53503.97043.55092.36022.31341.37004.92204.08983.40111.07843.34302.1870
C72.29263.61544.81045.01081.37002.31341.47235.43285.84752.19693.36401.07862.2696
C82.29263.61545.01084.81042.31341.37001.47235.84755.43283.36402.19692.26961.0786
H93.56752.42031.07502.32454.08984.92205.43285.84753.17753.78145.32036.25386.9077
H103.56752.42032.32451.07504.92204.08985.84755.43283.17755.32033.78146.90776.2538
H112.26852.91343.52734.28191.07843.40112.19693.36403.78145.32034.40822.65804.3594
H122.26852.91344.28193.52733.40111.07843.36402.19695.32033.78144.40824.35942.6580
H133.34194.62635.73516.04252.18703.34301.07862.26966.25386.90772.65804.35942.7084
H143.34194.62636.04255.73513.34302.18702.26961.07866.90776.25384.35942.65802.7084

picture of Calicene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 152.247 C1 C2 C4 152.247
C1 C5 C7 107.650 C1 C5 H11 125.155
C1 C6 C8 107.650 C1 C6 H12 125.155
C2 C1 C5 126.559 C2 C1 C6 126.559
C2 C3 C4 62.247 C2 C3 H9 148.867
C2 C4 C3 62.247 C2 C4 H10 148.867
C3 C2 C4 55.506 C3 C4 H10 148.886
C4 C3 H9 148.886 C5 C1 C6 106.882
C5 C7 C8 108.909 C5 C7 H13 126.131
C6 C8 C7 108.909 C6 C8 H14 126.131
C7 C5 H11 127.195 C7 C8 H14 124.960
C8 C6 H12 127.195 C8 C7 H13 124.960
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.345      
2 C -0.628      
3 C -0.294      
4 C -0.294      
5 C -0.045      
6 C -0.045      
7 C -0.435      
8 C -0.435      
9 H 0.314      
10 H 0.314      
11 H 0.305      
12 H 0.305      
13 H 0.298      
14 H 0.298      


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 5.088 5.088
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -51.968 0.000 0.000
y 0.000 -40.886 0.000
z 0.000 0.000 -34.656
Traceless
 xyz
x -14.197 0.000 0.000
y 0.000 2.426 0.000
z 0.000 0.000 11.771
Polar
3z2-r223.541
x2-y2-11.082
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.132 0.000 0.000
y 0.000 11.709 0.000
z 0.000 0.000 22.370


<r2> (average value of r2) Å2
<r2> 210.664
(<r2>)1/2 14.514