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All results from a given calculation for C8H8 (cyclooctatetraene)

using model chemistry: MP2/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at MP2/6-31G
 hartrees
Energy at 0K-308.112325
Energy at 298.15K-308.120129
HF Energy-307.404657
Nuclear repulsion energy321.090220
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 MP2/6-31G
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 3167 3030 0.00      
2 A1 1706 1632 0.00      
3 A1 1283 1228 0.00      
4 A1 904 865 0.00      
5 A1 780 746 0.00      
6 A1 190 181 0.00      
7 A2 3128 2993 0.00      
8 A2 1433 1371 0.00      
9 A2 970 928 0.00      
10 A2 955 914 0.00      
11 A2 228 218 0.00      
12 B1 3137 3001 0.00      
13 B1 1495 1431 0.00      
14 B1 1070 1024 0.00      
15 B1 948 907 0.00      
16 B1 666 637 0.00      
17 B1 242 232 0.00      
18 B2 3153 3017 54.80      
19 B2 1666 1594 2.26      
20 B2 1268 1214 0.63      
21 B2 706 675 91.22      
22 B2 298 285 1.57      
23 E 3159 3023 84.22      
23 E 3159 3023 84.22      
24 E 3131 2996 3.31      
24 E 3131 2996 3.31      
25 E 1679 1606 0.74      
25 E 1679 1606 0.74      
26 E 1471 1407 0.07      
26 E 1471 1407 0.07      
27 E 1293 1237 0.19      
27 E 1293 1237 0.19      
28 E 988 945 2.27      
28 E 988 945 2.27      
29 E 965 923 2.27      
29 E 965 923 2.27      
30 E 829 793 21.77      
30 E 829 793 21.77      
31 E 652 624 18.14      
31 E 652 624 18.14      
32 E 366 350 2.05      
32 E 366 350 2.05      

Unscaled Zero Point Vibrational Energy (zpe) 29227.8 cm-1
Scaled (by 0.9568) Zero Point Vibrational Energy (zpe) 27965.1 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 MP2/6-31G
ABC
0.08842 0.08842 0.05068

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.681 1.560 0.408
C2 -0.681 1.560 0.408
C3 0.681 -1.560 0.408
C4 -0.681 -1.560 0.408
C5 1.560 0.681 -0.408
C6 -1.560 0.681 -0.408
C7 1.560 -0.681 -0.408
C8 -1.560 -0.681 -0.408
H9 1.195 2.309 1.020
H10 -1.195 2.309 1.020
H11 1.195 -2.309 1.020
H12 -1.195 -2.309 1.020
H13 2.309 1.195 -1.020
H14 -2.309 1.195 -1.020
H15 2.309 -1.195 -1.020
H16 -2.309 -1.195 -1.020

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14 H15 H16
C11.36113.12033.40431.48742.54162.54163.27211.09512.11003.95064.34282.19583.33273.50414.3086
C21.36113.40433.12032.54161.48743.27212.54162.11001.09514.34283.95063.33272.19584.30863.5041
C33.12033.40431.36112.54163.27211.48742.54163.95064.34281.09512.11003.50414.30862.19583.3327
C43.40433.12031.36113.27212.54162.54161.48744.34283.95062.11001.09514.30863.50413.33272.1958
C51.48742.54162.54163.27213.12031.36113.40432.19583.50413.33274.30861.09513.95062.11004.3428
C62.54161.48743.27212.54163.12033.40431.36113.50412.19584.30863.33273.95061.09514.34282.1100
C72.54163.27211.48742.54161.36113.40433.12033.33274.30862.19583.50412.11004.34281.09513.9506
C83.27212.54162.54161.48743.40431.36113.12034.30863.33273.50412.19584.34282.11003.95061.0951
H91.09512.11003.95064.34282.19583.50413.33274.30862.38984.61755.19932.57674.20414.20415.3581
H102.11001.09514.34283.95063.50412.19584.30863.33272.38985.19934.61754.20412.57675.35814.2041
H113.95064.34281.09512.11003.33274.30862.19583.50414.61755.19932.38984.20415.35812.57674.2041
H124.34283.95062.11001.09514.30863.33273.50412.19585.19934.61752.38985.35814.20414.20412.5767
H132.19583.33273.50414.30861.09513.95062.11004.34282.57674.20414.20415.35814.61752.38985.1993
H143.33272.19584.30863.50413.95061.09514.34282.11004.20412.57675.35814.20414.61755.19932.3898
H153.50414.30862.19583.33272.11004.34281.09513.95064.20415.35812.57674.20412.38985.19934.6175
H164.30863.50413.33272.19584.34282.11003.95061.09515.35814.20414.20412.57675.19932.38984.6175

picture of cyclooctatetraene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C6 126.253 C1 C2 H10 118.012
C1 C5 C7 126.253 C1 C5 H13 115.647
C2 C1 C5 126.253 C2 C1 H9 118.012
C2 C6 C8 126.253 C2 C6 H14 115.647
C3 C4 C8 126.253 C3 C4 H12 118.012
C3 C7 C5 126.253 C3 C7 H15 115.647
C4 C3 C7 126.253 C4 C3 H11 118.012
C4 C8 C6 126.253 C4 C8 H16 115.647
C5 C1 H9 115.647 C5 C7 H15 118.012
C6 C2 H10 115.647 C6 C8 H16 118.012
C7 C3 H11 115.647 C7 C5 H13 118.012
C8 C4 H12 115.647 C8 C6 H14 118.012
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability