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

using model chemistry: CCSD(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 CCSD(T)/aug-cc-pVTZ
 hartrees
Energy at 0K-229.606506
Energy at 298.15K 
HF Energy-228.672214
Nuclear repulsion energy142.204982
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 CCSD(T)/aug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at CCSD(T)/aug-cc-pVTZ
ABC
0.34023 0.13358 0.09766

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.491 0.735 0.000
C2 0.000 0.502 0.000
O3 -0.821 1.401 0.000
C4 -0.419 -0.903 0.000
C5 -0.732 -2.075 0.000
H6 1.694 1.805 0.000
H7 1.934 0.263 0.881
H8 1.934 0.263 -0.881
H9 -1.032 -3.097 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 C5 H6 H7 H8 H9
C11.50882.40532.51573.58301.08881.09311.09314.5879
C21.50881.21721.46592.67912.13662.13822.13823.7441
O32.40531.21722.33863.47732.54633.10763.10764.5031
C42.51571.46592.33861.21353.43412.76922.76922.2783
C53.58302.67913.47731.21354.57573.65353.65351.0650
H61.08882.13662.54633.43414.57571.79191.79195.6086
H71.09312.13823.10762.76923.65351.79191.76154.5672
H81.09312.13823.10762.76923.65351.79191.76154.5672
H94.58793.74414.50312.27831.06505.60864.56724.5672

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 123.503 C1 C2 C4 115.488
C2 C1 H6 109.619 C2 C1 H7 109.488
C2 C1 H8 109.488 C2 C4 C5 178.362
O3 C2 C4 121.009 C4 C5 H9 178.618
H6 C1 H7 110.424 H6 C1 H8 110.424
H7 C1 H8 107.361
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability