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 C6H8 (Bicyclo[2.1.1]hex-2-ene)

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 C2V 1A1
Energy calculated at B2PLYP/6-31G*
 hartrees
Energy at 0K-233.080619
Energy at 298.15K-233.090108
HF Energy-232.822456
Nuclear repulsion energy230.951933
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 3281 3114 12.27      
2 A1 3162 3002 43.90      
3 A1 3160 2999 7.49      
4 A1 3095 2937 41.04      
5 A1 1631 1548 0.81      
6 A1 1559 1480 0.01      
7 A1 1302 1236 1.27      
8 A1 1160 1101 1.11      
9 A1 1087 1032 0.19      
10 A1 1012 961 0.00      
11 A1 970 920 0.01      
12 A1 866 822 1.32      
13 A1 540 512 0.34      
14 A2 1253 1189 0.00      
15 A2 1133 1076 0.00      
16 A2 1086 1031 0.00      
17 A2 893 848 0.00      
18 A2 857 813 0.00      
19 A2 541 514 0.00      
20 B1 3157 2997 36.92      
21 B1 3085 2928 52.76      
22 B1 1526 1449 0.17      
23 B1 1255 1191 1.08      
24 B1 1028 976 2.21      
25 B1 838 796 3.56      
26 B1 684 649 38.19      
27 B1 456 433 7.36      
28 B2 3256 3091 6.36      
29 B2 3158 2997 85.27      
30 B2 1362 1292 12.26      
31 B2 1283 1218 0.88      
32 B2 1255 1191 7.37      
33 B2 1128 1070 3.82      
34 B2 929 882 0.25      
35 B2 863 819 5.83      
36 B2 740 702 0.26      

Unscaled Zero Point Vibrational Energy (zpe) 27294.0 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 25907.5 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
0.19493 0.15672 0.14344

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.686 1.177
C2 0.000 -0.686 1.177
C3 0.000 -0.996 -0.244
C4 0.000 0.996 -0.244
C5 1.061 0.000 -0.809
C6 -1.061 0.000 -0.809
H7 0.000 1.350 1.988
H8 0.000 -1.350 1.988
H9 0.000 -2.061 -0.499
H10 0.000 2.061 -0.499
H11 2.042 0.000 -0.332
H12 -2.042 0.000 -0.332
H13 -1.118 0.000 -1.900
H14 1.118 0.000 -1.900

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.37292.20251.45482.35382.35381.04732.19153.21832.16742.63082.63083.34533.3453
C21.37291.45482.20252.35382.35382.19151.04732.16743.21832.63082.63083.34533.3453
C32.20251.45481.99171.56051.56053.23782.25991.09523.06762.27382.27382.23242.2324
C41.45482.20251.99171.56051.56052.25993.23783.06761.09522.27382.27382.23242.2324
C52.35382.35381.56051.56052.12133.28133.28132.33882.33881.09113.13932.43691.0928
C62.35382.35381.56051.56052.12133.28133.28132.33882.33883.13931.09111.09282.4369
H71.04732.19153.23782.25993.28133.28132.69934.22082.58603.37273.37274.26464.2646
H82.19151.04732.25993.23783.28133.28132.69932.58604.22083.37273.37274.26464.2646
H93.21832.16741.09523.06762.33882.33884.22082.58604.12242.90642.90642.73192.7319
H102.16743.21833.06761.09522.33882.33882.58604.22084.12242.90642.90642.73192.7319
H112.63082.63082.27382.27381.09113.13933.37273.37272.90642.90644.08463.52791.8197
H122.63082.63082.27382.27383.13931.09113.37273.37272.90642.90644.08461.81973.5279
H133.34533.34532.23242.23242.43691.09284.26464.26462.73192.73193.52791.81972.2365
H143.34533.34532.23242.23241.09282.43694.26464.26462.73192.73191.81973.52792.2365

picture of Bicyclo[2.1.1]hex-2-ene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 102.279 C1 C2 H8 129.291
C1 C4 C5 102.575 C1 C4 C6 102.575
C1 C4 H10 115.697 C2 C1 C4 102.279
C2 C1 H7 129.291 C2 C3 C5 102.575
C2 C3 C6 102.575 C2 C3 H9 115.697
C3 C2 H8 128.430 C3 C5 C4 79.306
C3 C5 H11 116.974 C3 C5 H14 113.391
C3 C6 C4 79.306 C3 C6 H12 116.974
C3 C6 H13 113.391 C4 C1 H7 128.430
C4 C5 H11 116.974 C4 C5 H14 113.391
C4 C6 H12 116.974 C4 C6 H13 113.391
C5 C3 C6 85.637 C5 C3 H9 122.465
C5 C4 C6 85.637 C5 C4 H10 122.465
C6 C3 H9 122.465 C6 C4 H10 122.465
H11 C5 H14 112.865 H12 C6 H13 112.865
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 -0.138      
2 C -0.138      
3 C -0.182      
4 C -0.182      
5 C -0.270      
6 C -0.270      
7 H 0.158      
8 H 0.158      
9 H 0.140      
10 H 0.140      
11 H 0.150      
12 H 0.150      
13 H 0.143      
14 H 0.143      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.023 0.000 0.000
y 0.000 8.570 0.000
z 0.000 0.000 8.639


<r2> (average value of r2) Å2
<r2> 120.338
(<r2>)1/2 10.970