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All results from a given calculation for CH3COCCH (3-butyn-2-one)

using model chemistry: QCISD(T)/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD(T)/aug-cc-pVTZ
 hartrees
Energy at 0K-229.607769
Energy at 298.15K 
HF Energy-228.672063
Nuclear repulsion energy142.170005
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 QCISD(T)/aug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at QCISD(T)/aug-cc-pVTZ
ABC
0.34006 0.13352 0.09762

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.491 0.736 0.000
C2 0.000 0.502 0.000
O3 -0.822 1.401 0.000
C4 -0.417 -0.903 0.000
C5 -0.732 -2.076 0.000
H6 1.692 1.807 0.000
H7 1.934 0.265 0.881
H8 1.934 0.265 -0.881
H9 -1.032 -3.098 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 C5 H6 H7 H8 H9
C11.50912.40622.51573.58471.08891.09321.09324.5897
C21.50911.21791.46592.67962.13682.13842.13843.7448
O32.40621.21792.33923.47742.54683.10833.10834.5035
C42.51571.46592.33921.21403.43412.76922.76922.2790
C53.58472.67963.47741.21404.57723.65553.65551.0652
H61.08892.13682.54683.43414.57721.79221.79225.6102
H71.09322.13843.10832.76923.65551.79221.76204.5693
H81.09322.13843.10832.76923.65551.79221.76204.5693
H94.58973.74484.50352.27901.06525.61024.56934.5693

picture of 3-butyn-2-one state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 123.510 C1 C2 C4 115.473
C2 C1 H6 109.606 C2 C1 H7 109.479
C2 C1 H8 109.479 C2 C4 C5 178.513
O3 C2 C4 121.017 C4 C5 H9 178.730
H6 C1 H7 110.426 H6 C1 H8 110.426
H7 C1 H8 107.390
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability