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All results from a given calculation for C8H6 (benzocyclobutadiene)

using model chemistry: HF/6-311G*

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/6-311G*
 hartrees
Energy at 0K-306.388402
Energy at 298.15K-306.394521
HF Energy-306.388402
Nuclear repulsion energy314.456300
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/6-311G*
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 3414 3088 16.39      
2 A1 3362 3041 25.56      
3 A1 3344 3024 20.65      
4 A1 1852 1675 4.80      
5 A1 1721 1556 1.62      
6 A1 1606 1452 9.05      
7 A1 1549 1401 13.17      
8 A1 1279 1157 0.01      
9 A1 1176 1063 0.72      
10 A1 1159 1048 0.14      
11 A1 996 900 5.61      
12 A1 875 791 0.51      
13 A1 585 529 0.35      
14 A2 1080 977 0.00      
15 A2 1039 940 0.00      
16 A2 982 888 0.00      
17 A2 844 764 0.00      
18 A2 633 573 0.00      
19 A2 325 294 0.00      
20 B1 1014 917 12.92      
21 B1 838 758 135.14      
22 B1 805 728 1.71      
23 B1 391 354 3.27      
24 B1 262 237 16.15      
25 B2 3383 3059 3.80      
26 B2 3354 3034 53.79      
27 B2 3328 3010 0.63      
28 B2 1821 1646 2.57      
29 B2 1577 1426 6.80      
30 B2 1422 1286 5.08      
31 B2 1373 1242 8.86      
32 B2 1165 1053 3.08      
33 B2 1130 1022 0.03      
34 B2 956 864 1.07      
35 B2 705 637 0.44      
36 B2 455 411 4.98      

Unscaled Zero Point Vibrational Energy (zpe) 25898.7 cm-1
Scaled (by 0.9044) Zero Point Vibrational Energy (zpe) 23422.7 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/6-311G*
ABC
0.16364 0.07407 0.05099

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.430 -0.610
C2 0.000 0.675 -1.838
C3 0.000 -0.675 -1.838
C4 0.000 -1.430 -0.610
C5 0.000 -0.663 2.032
C6 0.000 0.663 2.032
C7 0.000 0.711 0.518
C8 0.000 -0.711 0.518
H9 0.000 2.504 -0.635
H10 0.000 1.205 -2.771
H11 0.000 -1.205 -2.771
H12 0.000 -2.504 -0.635
H13 0.000 -1.420 2.791
H14 0.000 1.420 2.791

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14
C11.44082.43712.86003.37112.75131.33772.42021.07402.17293.40833.93384.43733.4011
C21.44081.35082.43714.09483.86982.35592.73342.18861.07382.09993.39915.08074.6881
C32.43711.35081.44083.86984.09482.73342.35593.39912.09991.07382.18864.68815.0807
C42.86002.43711.44082.75133.37112.42021.33773.93383.40832.17291.07403.40114.4373
C53.37114.09483.86982.75131.32692.04501.51494.14045.15444.83413.24011.07152.2172
C62.75133.86984.09483.37111.32691.51492.04503.24014.83415.15444.14042.21721.0715
C71.33772.35592.73342.42022.04501.51491.42232.13123.32643.80713.41533.11572.3809
C82.42022.73342.35591.33771.51492.04501.42233.41533.80713.32642.13122.38093.1157
H91.07402.18863.39913.93384.14043.24012.13123.41532.50034.28075.00755.20863.5929
H102.17291.07382.09993.40835.15444.83413.32643.80712.50032.41094.28076.15095.5665
H113.40832.09991.07382.17294.83415.15443.80713.32644.28072.41092.50035.56656.1509
H123.93383.39912.18861.07403.24014.14043.41532.13125.00754.28072.50033.59295.2086
H134.43735.08074.68813.40111.07152.21723.11572.38095.20866.15095.56653.59292.8399
H143.40114.68815.08074.43732.21721.07152.38093.11573.59295.56656.15095.20862.8399

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