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

using model chemistry: B2PLYP=FULL/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP=FULL/6-311G*
 hartrees
Energy at 0K-229.828668
Energy at 298.15K-229.831401
HF Energy-229.559204
Nuclear repulsion energy142.461908
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 B2PLYP=FULL/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3479 3479 41.02      
2 A' 3178 3178 9.63      
3 A' 3066 3066 1.63      
4 A' 2158 2158 56.77      
5 A' 1752 1752 159.21      
6 A' 1496 1496 20.56      
7 A' 1419 1419 40.95      
8 A' 1223 1223 144.43      
9 A' 996 996 31.78      
10 A' 747 747 16.19      
11 A' 637 637 49.36      
12 A' 600 600 7.08      
13 A' 441 441 2.38      
14 A' 175 175 3.82      
15 A" 3133 3133 7.84      
16 A" 1500 1500 11.53      
17 A" 1062 1062 5.25      
18 A" 680 680 36.47      
19 A" 600 600 1.95      
20 A" 234 234 1.53      
21 A" 120 120 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 14346.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14346.2 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 B2PLYP=FULL/6-311G*
ABC
0.34078 0.13422 0.09804

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.492 0.733 0.000
C2 0.000 0.499 0.000
O3 -0.819 1.395 0.000
C4 -0.414 -0.902 0.000
C5 -0.742 -2.066 0.000
H6 1.693 1.802 0.000
H7 1.945 0.268 0.879
H8 1.945 0.268 -0.879
H9 -1.049 -3.085 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 C5 H6 H7 H8 H9
C11.50992.40342.51053.58081.08831.09251.09254.5859
C21.50991.21361.46062.67042.13652.14672.14673.7344
O32.40341.21362.33193.46192.54463.11133.11134.4857
C42.51051.46062.33191.20993.42792.77572.77572.2738
C53.58082.67043.46191.20994.57103.66603.66601.0641
H61.08832.13652.54463.42794.57101.78591.78595.6040
H71.09252.14673.11132.77573.66601.78591.75754.5803
H81.09252.14673.11132.77573.66601.78591.75754.5803
H94.58593.73444.48572.27381.06415.60404.58034.5803

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 123.524 C1 C2 C4 115.367
C2 C1 H6 109.567 C2 C1 H7 110.125
C2 C1 H8 110.125 C2 C4 C5 179.260
O3 C2 C4 121.109 C4 C5 H9 178.936
H6 C1 H7 109.952 H6 C1 H8 109.952
H7 C1 H8 107.089
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability