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: PBE1PBE/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBE1PBE/3-21G
 hartrees
Energy at 0K-306.226887
Energy at 298.15K-306.231805
HF Energy-306.226887
Nuclear repulsion energy299.114540
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 PBE1PBE/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 3368 3235 9.29      
2 A1 3291 3161 11.71      
3 A1 3264 3134 2.40      
4 A1 1840 1767 490.77      
5 A1 1583 1520 66.67      
6 A1 1508 1448 70.93      
7 A1 1411 1355 83.18      
8 A1 1219 1171 28.64      
9 A1 1113 1069 5.44      
10 A1 1020 980 16.48      
11 A1 962 924 7.69      
12 A1 905 869 47.56      
13 A1 493 473 0.88      
14 A2 958 920 0.00      
15 A2 955 918 0.00      
16 A2 739 709 0.00      
17 A2 608 583 0.00      
18 A2 218 210 0.00      
19 B1 934 897 0.00      
20 B1 780 750 55.45      
21 B1 762 732 145.38      
22 B1 646 620 10.94      
23 B1 457 439 9.25      
24 B1 137 132 7.45      
25 B2 3324 3193 10.62      
26 B2 3280 3150 13.68      
27 B2 3254 3125 1.81      
28 B2 1595 1531 0.00      
29 B2 1350 1296 0.07      
30 B2 1230 1181 0.77      
31 B2 1130 1086 24.03      
32 B2 1120 1076 5.09      
33 B2 952 914 4.53      
34 B2 868 833 1.13      
35 B2 494 475 1.06      
36 B2 151 145 1.97      

Unscaled Zero Point Vibrational Energy (zpe) 23958.4 cm-1
Scaled (by 0.9604) Zero Point Vibrational Energy (zpe) 23009.6 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 PBE1PBE/3-21G
ABC
0.22439 0.04731 0.03907

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.041
C2 0.000 0.000 1.298
C3 0.000 0.666 2.578
C4 0.000 -0.666 2.578
C5 0.000 1.176 -0.915
C6 0.000 -1.176 -0.915
C7 0.000 0.732 -2.205
C8 0.000 -0.732 -2.205
H9 0.000 1.580 3.140
H10 0.000 -1.580 3.140
H11 0.000 2.199 -0.569
H12 0.000 -2.199 -0.569
H13 0.000 1.347 -3.094
H14 0.000 -1.347 -3.094

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14
C11.33982.70292.70291.46481.46482.28402.28403.55193.55192.26142.26143.33643.3364
C21.33981.44261.44262.50622.50623.57903.57902.42612.42612.88472.88474.59424.5942
C32.70291.44261.33173.53003.94884.78354.98321.07262.31473.50044.25565.71286.0186
C42.70291.44261.33173.94883.53004.98324.78352.31471.07264.25563.50046.01865.7128
C51.46482.50623.53003.94882.35181.36422.30324.07474.90241.08023.39272.18583.3336
C61.46482.50623.94883.53002.35182.30321.36424.90244.07473.39271.08023.33362.1858
C72.28403.57904.78354.98321.36422.30321.46445.41155.82332.19753.35701.08092.2612
C82.28403.57904.98324.78352.30321.36421.46445.82335.41153.35702.19752.26121.0809
H93.55192.42611.07262.31474.07474.90245.41155.82333.15943.75985.29456.23816.8865
H103.55192.42612.31471.07264.90244.07475.82335.41153.15945.29453.75986.88656.2381
H112.26142.88473.50044.25561.08023.39272.19753.35703.75985.29454.39822.66524.3533
H122.26142.88474.25563.50043.39271.08023.35702.19755.29453.75984.39824.35332.6652
H133.33644.59425.71286.01862.18583.33361.08092.26126.23816.88652.66524.35332.6938
H143.33644.59426.01865.71283.33362.18582.26121.08096.88656.23814.35332.66522.6938

picture of Calicene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 152.512 C1 C2 C4 152.512
C1 C5 C7 107.623 C1 C5 H11 124.702
C1 C6 C8 107.623 C1 C6 H12 124.702
C2 C1 C5 126.603 C2 C1 C6 126.603
C2 C3 C4 62.512 C2 C3 H9 149.063
C2 C4 C3 62.512 C2 C4 H10 149.063
C3 C2 C4 54.976 C3 C4 H10 148.425
C4 C3 H9 148.425 C5 C1 C6 106.793
C5 C7 C8 108.981 C5 C7 H13 126.359
C6 C8 C7 108.981 C6 C8 H14 126.359
C7 C5 H11 127.675 C7 C8 H14 124.661
C8 C6 H12 127.675 C8 C7 H13 124.661
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.284      
2 C 0.048      
3 C -0.090      
4 C -0.090      
5 C -0.195      
6 C -0.195      
7 C -0.239      
8 C -0.239      
9 H 0.250      
10 H 0.250      
11 H 0.193      
12 H 0.193      
13 H 0.199      
14 H 0.199      


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 4.280 4.280
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -51.787 0.000 0.000
y 0.000 -40.224 0.000
z 0.000 0.000 -34.174
Traceless
 xyz
x -14.588 0.000 0.000
y 0.000 2.757 0.000
z 0.000 0.000 11.831
Polar
3z2-r223.663
x2-y2-11.564
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.115 0.000 0.000
y 0.000 10.801 0.000
z 0.000 0.000 19.350


<r2> (average value of r2) Å2
<r2> 270.685
(<r2>)1/2 16.453