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All results from a given calculation for C8H8 (cyclooctatetraene)

using model chemistry: CID/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at CID/6-31G*
 hartrees
Energy at 0K-308.346473
Energy at 298.15K-308.354628
HF Energy-307.523801
Nuclear repulsion energy325.845349
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 CID/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 3047 0.00      
2 A1 1869 1726 0.00      
3 A1 1314 1214 0.00      
4 A1 954 881 0.00      
5 A1 824 761 0.00      
6 A1 195 180 0.00      
7 A2 3263 3014 0.00      
8 A2 1465 1353 0.00      
9 A2 1073 991 0.00      
10 A2 982 907 0.00      
11 A2 246 228 0.00      
12 B1 3272 3023 0.00      
13 B1 1569 1449 0.00      
14 B1 1111 1027 0.00      
15 B1 1041 962 0.00      
16 B1 707 653 0.00      
17 B1 265 245 0.00      
18 B2 3285 3034 42.02      
19 B2 1825 1686 1.79      
20 B2 1312 1212 1.11      
21 B2 738 682 88.10      
22 B2 309 285 1.18      
23 E 3292 3041 69.72      
23 E 3292 3041 69.72      
24 E 3267 3017 1.70      
24 E 3267 3017 1.70      
25 E 1843 1702 1.72      
25 E 1843 1702 1.72      
26 E 1521 1405 0.12      
26 E 1521 1405 0.12      
27 E 1327 1226 0.65      
27 E 1327 1226 0.65      
28 E 1067 986 0.01      
28 E 1067 986 0.01      
29 E 1027 949 3.04      
29 E 1027 949 3.04      
30 E 870 804 20.74      
30 E 870 804 20.74      
31 E 676 625 19.98      
31 E 676 625 19.98      
32 E 405 374 1.04      
32 E 405 374 1.04      

Unscaled Zero Point Vibrational Energy (zpe) 30753.9 cm-1
Scaled (by 0.9237) Zero Point Vibrational Energy (zpe) 28407.4 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 CID/6-31G*
ABC
0.09105 0.09105 0.05184

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

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.664 1.545 0.393
C2 -0.664 1.545 0.393
C3 0.664 -1.545 0.393
C4 -0.664 -1.545 0.393
C5 1.545 0.664 -0.393
C6 -1.545 0.664 -0.393
C7 1.545 -0.664 -0.393
C8 -1.545 -0.664 -0.393
H9 1.171 2.301 0.980
H10 -1.171 2.301 0.980
H11 1.171 -2.301 0.980
H12 -1.171 -2.301 0.980
H13 2.301 1.171 -0.980
H14 -2.301 1.171 -0.980
H15 2.301 -1.171 -0.980
H16 -2.301 -1.171 -0.980

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14 H15 H16
C11.32863.08973.36321.47222.50452.50453.22141.08312.07013.92314.30152.16823.28863.45524.2488
C21.32863.36323.08972.50451.47223.22142.50452.07011.08314.30153.92313.28862.16824.24883.4552
C33.08973.36321.32862.50453.22141.47222.50453.92314.30151.08312.07013.45524.24882.16823.2886
C43.36323.08971.32863.22142.50452.50451.47224.30153.92312.07011.08314.24883.45523.28862.1682
C51.47222.50452.50453.22143.08971.32863.36322.16823.45523.28864.24881.08313.92312.07014.3015
C62.50451.47223.22142.50453.08973.36321.32863.45522.16824.24883.28863.92311.08314.30152.0701
C72.50453.22141.47222.50451.32863.36323.08973.28864.24882.16823.45522.07014.30151.08313.9231
C83.22142.50452.50451.47223.36321.32863.08974.24883.28863.45522.16824.30152.07013.92311.0831
H91.08312.07013.92314.30152.16823.45523.28864.24882.34254.60165.16352.52804.14374.14375.2867
H102.07011.08314.30153.92313.45522.16824.24883.28862.34255.16354.60164.14372.52805.28674.1437
H113.92314.30151.08312.07013.28864.24882.16823.45524.60165.16352.34254.14375.28672.52804.1437
H124.30153.92312.07011.08314.24883.28863.45522.16825.16354.60162.34255.28674.14374.14372.5280
H132.16823.28863.45524.24881.08313.92312.07014.30152.52804.14374.14375.28674.60162.34255.1635
H143.28862.16824.24883.45523.92311.08314.30152.07014.14372.52805.28674.14374.60165.16352.3425
H153.45524.24882.16823.28862.07014.30151.08313.92314.14375.28672.52804.14372.34255.16354.6016
H164.24883.45523.28862.16824.30152.07013.92311.08315.28674.14374.14372.52805.16352.34254.6016

picture of cyclooctatetraene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C6 126.735 C1 C2 H10 117.908
C1 C5 C7 126.735 C1 C5 H13 115.254
C2 C1 C5 126.735 C2 C1 H9 117.908
C2 C6 C8 126.735 C2 C6 H14 115.254
C3 C4 C8 126.735 C3 C4 H12 117.908
C3 C7 C5 126.735 C3 C7 H15 115.254
C4 C3 C7 126.735 C4 C3 H11 117.908
C4 C8 C6 126.735 C4 C8 H16 115.254
C5 C1 H9 115.254 C5 C7 H15 117.908
C6 C2 H10 115.254 C6 C8 H16 117.908
C7 C3 H11 115.254 C7 C5 H13 117.908
C8 C4 H12 115.254 C8 C6 H14 117.908
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability