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All results from a given calculation for C6H6 (Hexa-1,5-diene-3-yne)

using model chemistry: MP2/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at MP2/CEP-121G
 hartrees
Energy at 0K-36.746699
Energy at 298.15K 
HF Energy-36.220079
Nuclear repulsion energy87.176216
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/CEP-121G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3210 3133 0.00      
2 Ag 3121 3046 0.00      
3 Ag 3094 3019 0.00      
4 Ag 2154 2102 0.00      
5 Ag 1596 1558 0.00      
6 Ag 1448 1414 0.00      
7 Ag 1332 1300 0.00      
8 Ag 1096 1070 0.00      
9 Ag 694 677 0.00      
10 Ag 502 490 0.00      
11 Ag 219 213 0.00      
12 Au 969 946 71.84      
13 Au 829 809 95.95      
14 Au 629 614 5.20      
15 Au 152 149 7.18      
16 Au 20i 20i 0.00      
17 Bg 969 946 0.00      
18 Bg 830 810 0.00      
19 Bg 557 544 0.00      
20 Bg 736i 718i 0.00      
21 Bu 3210 3133 49.80      
22 Bu 3120 3045 36.34      
23 Bu 3094 3019 17.08      
24 Bu 1618 1579 44.64      
25 Bu 1469 1434 6.39      
26 Bu 1333 1301 0.63      
27 Bu 1196 1168 21.96      
28 Bu 1009 984 0.31      
29 Bu 525 512 4.79      
30 Bu 107 104 2.59      

Unscaled Zero Point Vibrational Energy (zpe) 19662.3 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 19190.4 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 MP2/CEP-121G
ABC
0.83056 0.04329 0.04115

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.626 0.000
C2 0.000 -0.626 0.000
C3 0.000 2.084 0.000
C4 0.000 -2.084 0.000
C5 1.143 2.850 0.000
C6 -1.143 -2.850 0.000
H7 -0.979 2.576 0.000
H8 0.979 -2.576 0.000
H9 2.138 2.395 0.000
H10 1.082 3.941 0.000
H11 -2.138 -2.395 0.000
H12 -1.082 -3.941 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.25121.45872.70992.50073.65852.18233.34782.77533.48723.70084.6927
C21.25122.70991.45873.65852.50073.34782.18233.70084.69272.77533.4872
C31.45872.70994.16851.37595.06471.09594.76182.16052.14874.96356.1213
C42.70991.45874.16855.06471.37594.76181.09594.96356.12132.16052.1487
C52.50073.65851.37595.06476.14092.14045.42781.09361.09276.18677.1457
C63.65852.50075.06471.37596.14095.42782.14046.18677.14571.09361.0927
H72.18233.34781.09594.76182.14045.42785.51133.12272.47255.10416.5171
H83.34782.18234.76181.09595.42782.14045.51135.10416.51713.12272.4725
H92.77533.70082.16054.96351.09366.18673.12275.10411.87186.42127.1071
H103.48724.69272.14876.12131.09277.14572.47256.51711.87187.10718.1730
H113.70082.77534.96352.16056.18671.09365.10413.12276.42127.10711.8718
H124.69273.48726.12132.14877.14571.09276.51712.47257.10718.17301.8718

picture of Hexa-1,5-diene-3-yne state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 180.000 C1 C3 C5 123.800
C1 C3 H7 116.644 C2 C1 C3 180.000
C2 C4 C6 123.800 C2 C4 H8 116.644
C3 C5 H9 121.644 C3 C5 H10 120.588
C4 C6 H11 121.644 C4 C6 H12 120.588
C5 C3 H7 119.556 C6 C4 H8 119.556
H9 C5 H10 117.768 H11 C6 H12 117.768
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability