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: QCISD/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 QCISD/6-31G
 hartrees
Energy at 0K-306.907908
Energy at 298.15K-306.912165
HF Energy-306.153141
Nuclear repulsion energy295.070589
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/6-31G
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 3299 3179 2.24      
2 A1 3207 3090 25.18      
3 A1 3177 3061 4.69      
4 A1 1817 1751 474.29      
5 A1 1556 1499 31.74      
6 A1 1519 1464 53.01      
7 A1 1409 1358 48.30      
8 A1 1196 1152 23.26      
9 A1 1108 1067 2.21      
10 A1 1002 966 14.70      
11 A1 956 921 0.63      
12 A1 885 852 54.88      
13 A1 477 460 3.34      
14 A2 803 773 0.00      
15 A2 781 753 0.00      
16 A2 661 636 0.00      
17 A2 548 528 0.00      
18 A2 216 208 0.00      
19 B1 838 808 1.09      
20 B1 682 657 118.52      
21 B1 575 554 14.66      
22 B1 540 521 49.62      
23 B1 276 266 2.54      
24 B1 127 122 4.38      
25 B2 3258 3139 1.39      
26 B2 3194 3078 36.08      
27 B2 3169 3054 0.17      
28 B2 1592 1534 0.12      
29 B2 1351 1302 0.03      
30 B2 1230 1185 0.66      
31 B2 1125 1084 18.84      
32 B2 1120 1079 2.38      
33 B2 911 878 2.75      
34 B2 850 819 1.17      
35 B2 489 471 1.55      
36 B2 150 145 1.11      

Unscaled Zero Point Vibrational Energy (zpe) 23045.5 cm-1
Scaled (by 0.9636) Zero Point Vibrational Energy (zpe) 22206.6 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 QCISD/6-31G
ABC
0.21876 0.04592 0.03796

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

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 1.311
C3 0.000 0.675 2.620
C4 0.000 -0.675 2.620
C5 0.000 1.190 -0.933
C6 0.000 -1.190 -0.933
C7 0.000 0.744 -2.234
C8 0.000 -0.744 -2.234
H9 0.000 1.597 3.189
H10 0.000 -1.597 3.189
H11 0.000 2.225 -0.587
H12 0.000 -2.225 -0.587
H13 0.000 1.364 -3.132
H14 0.000 -1.364 -3.132

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14
C11.35242.74542.74541.48661.48662.31642.31643.60303.60302.29062.29063.37913.3791
C21.35241.47241.47242.53982.53983.62323.62322.46472.46472.92442.92444.64854.6485
C32.74541.47241.34943.58984.01224.85525.05791.08352.34183.56184.32325.79376.1033
C42.74541.47241.34944.01223.58985.05794.85522.34181.08354.32323.56186.10335.7937
C51.48662.53983.58984.01222.37921.37592.33154.14134.97491.09143.43182.20673.3708
C61.48662.53984.01223.58982.37922.33151.37594.97494.14133.43181.09143.37082.2067
C72.31643.62324.85525.05791.37592.33151.48905.48975.90712.21503.39581.09112.2921
C82.31643.62325.05794.85522.33151.37591.48905.90715.48973.39582.21502.29211.0911
H93.60302.46471.08352.34184.14134.97495.48975.90713.19423.82715.37216.32536.9804
H103.60302.46472.34181.08354.97494.14135.90715.48973.19425.37213.82716.98046.3253
H112.29062.92443.56184.32321.09143.43182.21503.39583.82715.37214.44942.68714.4003
H122.29062.92444.32323.56183.43181.09143.39582.21505.37213.82714.44944.40032.6871
H133.37914.64855.79376.10332.20673.37081.09112.29216.32536.98042.68714.40032.7289
H143.37914.64856.10335.79373.37082.20672.29211.09116.98046.32534.40032.68712.7289

picture of Calicene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 152.728 C1 C2 C4 152.728
C1 C5 C7 107.976 C1 C5 H11 124.674
C1 C6 C8 107.976 C1 C6 H12 124.674
C2 C1 C5 126.849 C2 C1 C6 126.849
C2 C3 C4 62.728 C2 C3 H9 148.917
C2 C4 C3 62.728 C2 C4 H10 148.917
C3 C2 C4 54.545 C3 C4 H10 148.355
C4 C3 H9 148.355 C5 C1 C6 106.301
C5 C7 C8 108.874 C5 C7 H13 126.503
C6 C8 C7 108.874 C6 C8 H14 126.503
C7 C5 H11 127.350 C7 C8 H14 124.624
C8 C6 H12 127.350 C8 C7 H13 124.624
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability