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

using model chemistry: BLYP/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at BLYP/6-31G*
 hartrees
Energy at 0K-229.895791
Energy at 298.15K-229.898289
HF Energy-229.895791
Nuclear repulsion energy141.069501
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 BLYP/6-31G*
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' 3407 3379 39.22      
2 A' 3084 3059 9.85      
3 A' 2973 2949 1.99      
4 A' 2129 2112 49.08      
5 A' 1678 1664 141.03      
6 A' 1453 1441 16.67      
7 A' 1366 1355 23.42      
8 A' 1175 1166 146.25      
9 A' 953 945 39.34      
10 A' 720 714 9.65      
11 A' 585 580 26.05      
12 A' 548 543 25.49      
13 A' 422 418 3.11      
14 A' 164 163 3.43      
15 A" 3028 3004 8.25      
16 A" 1458 1447 7.98      
17 A" 1021 1013 5.33      
18 A" 628 623 34.33      
19 A" 570 566 0.08      
20 A" 232 230 0.48      
21 A" 103 102 0.14      

Unscaled Zero Point Vibrational Energy (zpe) 13847.8 cm-1
Scaled (by 0.9919) Zero Point Vibrational Energy (zpe) 13735.6 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 BLYP/6-31G*
ABC
0.33367 0.13197 0.09628

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.504 0.760 0.000
C2 0.000 0.494 0.000
O3 -0.844 1.393 0.000
C4 -0.401 -0.913 0.000
C5 -0.739 -2.087 0.000
H6 1.683 1.844 0.000
H7 1.974 0.300 0.887
H8 1.974 0.300 -0.887
H9 -1.062 -3.111 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 C5 H6 H7 H8 H9
C11.52722.43172.53573.62411.09921.10431.10434.6438
C21.52721.23311.46342.68462.15762.17312.17313.7577
O32.43171.23312.34853.48162.56663.15013.15014.5089
C42.53571.46342.34851.22113.45672.81132.81132.2944
C53.62412.68463.48161.22114.61733.72113.72111.0735
H61.09922.15762.56663.45674.61731.80461.80465.6644
H71.10432.17313.15012.81133.72111.80461.77434.6519
H81.10432.17313.15012.81133.72111.80461.77434.6519
H94.64383.75774.50892.29441.07355.66444.65194.6519

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 123.160 C1 C2 C4 115.945
C2 C1 H6 109.388 C2 C1 H7 110.301
C2 C1 H8 110.301 C2 C4 C5 179.876
O3 C2 C4 120.895 C4 C5 H9 178.510
H6 C1 H7 109.960 H6 C1 H8 109.960
H7 C1 H8 106.904
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.481      
2 C 0.272      
3 O -0.382      
4 C 0.377      
5 C -0.460      
6 H 0.167      
7 H 0.166      
8 H 0.166      
9 H 0.178      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.832 -2.166 0.000 2.837
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.741 4.583 0.000
y 4.583 -25.749 0.000
z 0.000 0.000 -28.472
Traceless
 xyz
x -1.630 4.583 0.000
y 4.583 2.858 0.000
z 0.000 0.000 -1.227
Polar
3z2-r2-2.455
x2-y2-2.992
xy4.583
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.574 1.091 0.000
y 1.091 9.343 0.000
z 0.000 0.000 3.448


<r2> (average value of r2) Å2
<r2> 118.958
(<r2>)1/2 10.907