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

using model chemistry: MP3/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP3/TZVP
 hartrees
Energy at 0K-229.416118
Energy at 298.15K-229.418805
HF Energy-228.665933
Nuclear repulsion energy142.881272
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 MP3/TZVP
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' 3533 3305 47.92      
2 A' 3217 3008 7.92      
3 A' 3100 2900 1.63      
4 A' 2262 2116 45.35      
5 A' 1848 1728 167.00      
6 A' 1502 1404 12.24      
7 A' 1435 1342 31.81      
8 A' 1243 1162 138.44      
9 A' 1016 950 23.54      
10 A' 763 713 16.52      
11 A' 684 640 45.22      
12 A' 610 570 12.27      
13 A' 452 423 1.53      
14 A' 170 159 3.69      
15 A" 3174 2968 6.23      
16 A" 1495 1398 9.77      
17 A" 1063 994 3.10      
18 A" 666 623 45.37      
19 A" 565 529 0.11      
20 A" 173 162 0.56      
21 A" 126 118 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 14548.8 cm-1
Scaled (by 0.9352) Zero Point Vibrational Energy (zpe) 13606.0 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 MP3/TZVP
ABC
0.34282 0.13481 0.09852

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.493 0.712 0.000
C2 0.000 0.503 0.000
O3 -0.799 1.406 0.000
C4 -0.436 -0.896 0.000
C5 -0.745 -2.057 0.000
H6 1.711 1.777 0.000
H7 1.930 0.237 0.879
H8 1.930 0.237 -0.879
H9 -1.047 -3.074 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 C5 H6 H7 H8 H9
C11.50752.39432.51183.56071.08641.09041.09044.5598
C21.50751.20501.46572.66642.13302.13712.13713.7278
O32.39431.20502.32983.46282.53743.09563.09564.4867
C42.51181.46572.32981.20133.42852.76682.76682.2624
C53.56072.66643.46281.20134.55303.63203.63201.0614
H61.08642.13302.53743.42854.55301.78601.78605.5804
H71.09042.13713.09562.76683.63201.78601.75784.5390
H81.09042.13713.09562.76683.63201.78601.75784.5390
H94.55983.72784.48672.26241.06145.58044.53904.5390

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 123.553 C1 C2 C4 115.292
C2 C1 H6 109.566 C2 C1 H7 109.652
C2 C1 H8 109.652 C2 C4 C5 177.579
O3 C2 C4 121.156 C4 C5 H9 178.363
H6 C1 H7 110.261 H6 C1 H8 110.261
H7 C1 H8 107.419
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability