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All results from a given calculation for C8H6 (benzocyclobutadiene)

using model chemistry: B3LYP/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYP/aug-cc-pVTZ
 hartrees
Energy at 0K-308.469848
Energy at 298.15K-308.475537
HF Energy-308.469848
Nuclear repulsion energy313.151422
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 B3LYP/aug-cc-pVTZ
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 3236 3131 8.19      
2 A1 3192 3088 13.54      
3 A1 3176 3073 7.29      
4 A1 1692 1637 1.78      
5 A1 1567 1516 4.13      
6 A1 1488 1439 3.55      
7 A1 1441 1394 7.83      
8 A1 1189 1150 0.02      
9 A1 1099 1063 0.14      
10 A1 1068 1033 0.26      
11 A1 974 943 5.46      
12 A1 815 789 0.39      
13 A1 549 531 0.29      
14 A2 988 956 0.00      
15 A2 935 904 0.00      
16 A2 891 862 0.00      
17 A2 791 766 0.00      
18 A2 590 571 0.00      
19 A2 297 287 0.00      
20 B1 932 902 7.88      
21 B1 755 731 110.35      
22 B1 722 699 2.61      
23 B1 366 354 3.29      
24 B1 231 223 12.07      
25 B2 3207 3103 1.80      
26 B2 3183 3080 28.42      
27 B2 3165 3062 0.04      
28 B2 1644 1590 0.19      
29 B2 1461 1414 3.45      
30 B2 1309 1266 3.19      
31 B2 1260 1219 12.82      
32 B2 1094 1058 3.23      
33 B2 1058 1023 0.49      
34 B2 875 846 0.40      
35 B2 658 637 0.63      
36 B2 419 405 4.09      

Unscaled Zero Point Vibrational Energy (zpe) 24157.1 cm-1
Scaled (by 0.9675) Zero Point Vibrational Energy (zpe) 23372.0 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 B3LYP/aug-cc-pVTZ
ABC
0.16229 0.07347 0.05057

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.439 -0.619
C2 0.000 0.685 -1.840
C3 0.000 -0.685 -1.840
C4 0.000 -1.439 -0.619
C5 0.000 -0.673 2.040
C6 0.000 0.673 2.040
C7 0.000 0.712 0.521
C8 0.000 -0.712 0.521
H9 0.000 2.521 -0.645
H10 0.000 1.219 -2.780
H11 0.000 -1.219 -2.780
H12 0.000 -2.521 -0.645
H13 0.000 -1.428 2.810
H14 0.000 1.428 2.810

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14
C11.43482.44962.87863.39602.76751.35282.43501.08172.17163.42553.96004.47033.4294
C21.43481.36942.44964.11023.87962.36122.74322.19061.08142.12323.42085.10734.7088
C32.44961.36941.43483.87964.11022.74322.36123.42082.12321.08142.19064.70885.1073
C42.87862.44961.43482.76753.39602.43501.35283.96003.42552.17161.08173.42944.4703
C53.39604.11023.87962.76751.34562.05521.51914.17205.17774.85063.25911.07882.2378
C62.76753.87964.11023.39601.34561.51912.05523.25914.85065.17774.17202.23781.0788
C71.35282.36122.74322.43502.05521.51911.42402.15203.33993.82453.43653.13352.3981
C82.43502.74322.36121.35281.51912.05521.42403.43653.82453.33992.15202.39813.1335
H91.08172.19063.42083.96004.17203.25912.15203.43652.50064.30625.04135.24693.6233
H102.17161.08142.12323.42555.17774.85063.33993.82452.50062.43804.30626.18505.5937
H113.42552.12321.08142.17164.85065.17773.82453.33994.30622.43802.50065.59376.1850
H123.96003.42082.19061.08173.25914.17203.43652.15205.04134.30622.50063.62335.2469
H134.47035.10734.70883.42941.07882.23783.13352.39815.24696.18505.59373.62332.8566
H143.42944.70885.10734.47032.23781.07882.39813.13353.62335.59376.18505.24692.8566

picture of benzocyclobutadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 121.732 C1 C2 H10 118.658
C1 C7 C6 148.959 C1 C7 N8 122.520
C2 C1 C7 115.748 C2 C1 H9 120.387
C2 C3 C4 121.732 C2 C3 H11 119.611
C3 C2 H10 119.611 C3 C4 N8 115.748
C3 C4 H12 120.387 C4 C3 H11 118.658
C4 N8 C5 148.959 C4 N8 C7 122.520
C5 C6 C7 91.479 C5 C6 H14 134.452
C5 N8 C7 88.521 C6 C5 N8 91.479
C6 C5 H13 134.452 C6 C7 N8 88.521
C7 C1 H9 123.865 C7 C6 H14 134.068
N8 C4 H12 123.865 N8 C5 H13 134.068
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability