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

using model chemistry: QCISD/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/aug-cc-pVTZ
 hartrees
Energy at 0K-229.564630
Energy at 298.15K 
HF Energy-228.673753
Nuclear repulsion energy142.581266
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/aug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at QCISD/aug-cc-pVTZ
ABC
0.34203 0.13418 0.09812

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.489 0.731 0.000
C2 0.000 0.503 0.000
O3 -0.815 1.398 0.000
C4 -0.420 -0.903 0.000
C5 -0.736 -2.067 0.000
H6 1.696 1.799 0.000
H7 1.930 0.259 0.880
H8 1.930 0.259 -0.880
H9 -1.032 -3.088 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 C5 H6 H7 H8 H9
C11.50632.39882.51263.57491.08711.09141.09144.5765
C21.50631.21091.46682.67332.13412.13462.13463.7364
O32.39881.21092.33433.46632.54303.09953.09954.4914
C42.51261.46682.33431.20673.43112.76462.76462.2697
C53.57492.67333.46631.20674.56683.64523.64521.0631
H61.08712.13412.54303.43114.56681.78861.78865.5966
H71.09142.13463.09952.76463.64521.78861.75914.5549
H81.09142.13463.09952.76463.64521.78861.75914.5549
H94.57653.73644.49142.26971.06315.59664.55494.5549

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 123.607 C1 C2 C4 115.360
C2 C1 H6 109.697 C2 C1 H7 109.481
C2 C1 H8 109.481 C2 C4 C5 178.523
O3 C2 C4 121.033 C4 C5 H9 178.957
H6 C1 H7 110.377 H6 C1 H8 110.377
H7 C1 H8 107.391
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability