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

using model chemistry: MP4=FULL/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 MP4=FULL/aug-cc-pVTZ
 hartrees
Energy at 0K-229.705414
Energy at 298.15K 
HF Energy-228.671806
Nuclear repulsion energy142.553392
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 MP4=FULL/aug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at MP4=FULL/aug-cc-pVTZ
ABC
0.34097 0.13470 0.09832

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.484 0.731 0.000
C2 0.000 0.498 0.000
O3 -0.825 1.398 0.000
C4 -0.407 -0.898 0.000
C5 -0.729 -2.069 0.000
H6 1.687 1.800 0.000
H7 1.925 0.261 0.880
H8 1.925 0.261 -0.880
H9 -1.028 -3.086 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 C5 H6 H7 H8 H9
C11.50222.40302.49593.56931.08731.09091.09094.5703
C21.50221.22031.45422.66872.13072.13012.13013.7294
O32.40301.22032.33333.46802.54393.10323.10324.4889
C42.49591.45422.33331.21463.41482.74872.74872.2752
C53.56932.66873.46801.21464.56113.63973.63971.0607
H61.08732.13072.54393.41484.56111.78851.78855.5899
H71.09092.13013.10322.74873.63971.78851.75924.5498
H81.09092.13013.10322.74873.63971.78851.75924.5498
H94.57033.72944.48892.27521.06075.58994.54984.5498

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 123.592 C1 C2 C4 115.172
C2 C1 H6 109.696 C2 C1 H7 109.437
C2 C1 H8 109.437 C2 C4 C5 179.142
O3 C2 C4 121.236 C4 C5 H9 179.015
H6 C1 H7 110.381 H6 C1 H8 110.381
H7 C1 H8 107.472
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability