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All results from a given calculation for C8H8 (cyclooctatetraene)

using model chemistry: MP2=FULL/3-21G*

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=FULL/3-21G*
 hartrees
Energy at 0K-306.521226
Energy at 298.15K-306.529027
HF Energy-305.801118
Nuclear repulsion energy323.492552
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=FULL/3-21G*
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 3177 3012 0.00      
2 A1 1673 1586 0.00      
3 A1 1297 1230 0.00      
4 A1 892 845 0.00      
5 A1 771 731 0.00      
6 A1 190 181 0.00      
7 A2 3140 2977 0.00      
8 A2 1445 1370 0.00      
9 A2 995 943 0.00      
10 A2 958 908 0.00      
11 A2 231 219 0.00      
12 B1 3148 2984 0.00      
13 B1 1495 1417 0.00      
14 B1 1042 988 0.00      
15 B1 966 916 0.00      
16 B1 679 644 0.00      
17 B1 243 230 0.00      
18 B2 3164 3000 37.25      
19 B2 1663 1576 3.16      
20 B2 1278 1212 0.83      
21 B2 706 670 90.63      
22 B2 301 285 2.09      
23 E 3170 3005 50.42      
23 E 3170 3005 50.42      
24 E 3143 2980 2.02      
24 E 3143 2980 2.02      
25 E 1661 1575 0.51      
25 E 1661 1575 0.51      
26 E 1478 1401 0.41      
26 E 1478 1401 0.41      
27 E 1304 1236 0.24      
27 E 1304 1236 0.24      
28 E 992 940 0.02      
28 E 992 940 0.02      
29 E 970 920 6.24      
29 E 970 920 6.24      
30 E 818 775 22.42      
30 E 818 775 22.42      
31 E 648 614 20.68      
31 E 648 614 20.68      
32 E 362 343 2.57      
32 E 362 343 2.57      

Unscaled Zero Point Vibrational Energy (zpe) 29271.8 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 27749.7 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 MP2=FULL/3-21G*
ABC
0.08971 0.08971 0.05221

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G*

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.675 1.536 0.426
C2 -0.675 1.536 0.426
C3 0.675 -1.536 0.426
C4 -0.675 -1.536 0.426
C5 1.536 0.675 -0.426
C6 -1.536 0.675 -0.426
C7 1.536 -0.675 -0.426
C8 -1.536 -0.675 -0.426
H9 1.198 2.255 1.058
H10 -1.198 2.255 1.058
H11 1.198 -2.255 1.058
H12 -1.198 -2.255 1.058
H13 2.255 1.198 -1.058
H14 -2.255 1.198 -1.058
H15 2.255 -1.198 -1.058
H16 -2.255 -1.198 -1.058

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14 H15 H16
C11.34953.07263.35591.48732.52162.52163.24111.09082.10343.87914.27582.19443.30173.49004.2739
C21.34953.35593.07262.52161.48733.24112.52162.10341.09084.27583.87913.30172.19444.27393.4900
C33.07263.35591.34952.52163.24111.48732.52163.87914.27581.09082.10343.49004.27392.19443.3017
C43.35593.07261.34953.24112.52162.52161.48734.27583.87912.10341.09084.27393.49003.30172.1944
C51.48732.52162.52163.24113.07261.34953.35592.19443.49003.30174.27391.09083.87912.10344.2758
C62.52161.48733.24112.52163.07263.35591.34953.49002.19444.27393.30173.87911.09084.27582.1034
C72.52163.24111.48732.52161.34953.35593.07263.30174.27392.19443.49002.10344.27581.09083.8791
C83.24112.52162.52161.48733.35591.34953.07264.27393.30173.49002.19444.27582.10343.87911.0908
H91.09082.10343.87914.27582.19443.49003.30174.27392.39694.51005.10742.59054.18584.18585.3227
H102.10341.09084.27583.87913.49002.19444.27393.30172.39695.10744.51004.18582.59055.32274.1858
H113.87914.27581.09082.10343.30174.27392.19443.49004.51005.10742.39694.18585.32272.59054.1858
H124.27583.87912.10341.09084.27393.30173.49002.19445.10744.51002.39695.32274.18584.18582.5905
H132.19443.30173.49004.27391.09083.87912.10344.27582.59054.18584.18585.32274.51002.39695.1074
H143.30172.19444.27393.49003.87911.09084.27582.10344.18582.59055.32274.18584.51005.10742.3969
H153.49004.27392.19443.30172.10344.27581.09083.87914.18585.32272.59054.18582.39695.10744.5100
H164.27393.49003.30172.19444.27582.10343.87911.09085.32274.18584.18582.59055.10742.39694.5100

picture of cyclooctatetraene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C6 125.401 C1 C2 H10 118.694
C1 C5 C7 125.401 C1 C5 H13 115.825
C2 C1 C5 125.401 C2 C1 H9 118.694
C2 C6 C8 125.401 C2 C6 H14 115.825
C3 C4 C8 125.401 C3 C4 H12 118.694
C3 C7 C5 125.401 C3 C7 H15 115.825
C4 C3 C7 125.401 C4 C3 H11 118.694
C4 C8 C6 125.401 C4 C8 H16 115.825
C5 C1 H9 115.825 C5 C7 H15 118.694
C6 C2 H10 115.825 C6 C8 H16 118.694
C7 C3 H11 115.825 C7 C5 H13 118.694
C8 C4 H12 115.825 C8 C6 H14 118.694
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability