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

using model chemistry: MP3=FULL/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 MP3=FULL/6-31G*
 hartrees
Energy at 0K-229.301099
Energy at 298.15K-229.303914
HF Energy-228.586970
Nuclear repulsion energy142.451096
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=FULL/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' 3530 3312 42.37      
2 A' 3228 3029 5.31      
3 A' 3110 2918 0.94      
4 A' 2279 2139 53.61      
5 A' 1866 1751 136.81      
6 A' 1529 1435 14.19      
7 A' 1456 1366 39.70      
8 A' 1269 1190 141.04      
9 A' 1032 968 16.64      
10 A' 772 724 15.14      
11 A' 642 602 52.49      
12 A' 613 575 8.39      
13 A' 450 423 2.56      
14 A' 180 169 3.37      
15 A" 3184 2987 4.55      
16 A" 1527 1433 10.46      
17 A" 1085 1018 5.42      
18 A" 661 620 44.77      
19 A" 608 571 0.01      
20 A" 252 236 0.42      
21 A" 139 130 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 14705.0 cm-1
Scaled (by 0.9383) Zero Point Vibrational Energy (zpe) 13797.7 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=FULL/6-31G*
ABC
0.34241 0.13382 0.09797

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.486 0.749 0.000
C2 0.000 0.498 0.000
O3 -0.826 1.387 0.000
C4 -0.412 -0.908 0.000
C5 -0.727 -2.073 0.000
H6 1.668 1.824 0.000
H7 1.942 0.289 0.882
H8 1.942 0.289 -0.882
H9 -1.021 -3.098 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 C5 H6 H7 H8 H9
C11.50672.39842.51913.58601.09051.09461.09464.5919
C21.50671.21381.46522.67172.13072.14322.14323.7386
O32.39841.21382.33233.46122.53203.10603.10604.4897
C42.51911.46522.33231.20663.43352.78422.78422.2735
C53.58602.67173.46121.20664.57403.67173.67171.0669
H61.09052.13072.53203.43354.57401.79171.79175.6090
H71.09462.14323.10602.78423.67171.79171.76474.5861
H81.09462.14323.10602.78423.67171.79171.76474.5861
H94.59193.73864.48972.27351.06695.60904.58614.5861

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 123.318 C1 C2 C4 115.910
C2 C1 H6 109.193 C2 C1 H7 109.939
C2 C1 H8 109.939 C2 C4 C5 178.836
O3 C2 C4 120.772 C4 C5 H9 179.182
H6 C1 H7 110.161 H6 C1 H8 110.161
H7 C1 H8 107.431
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability