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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-229.842757
Energy at 298.15K-229.845552
HF Energy-229.566493
Nuclear repulsion energy142.474848
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' 3488 3488 51.02      
2 A' 3174 3174 7.85      
3 A' 3061 3061 1.17      
4 A' 2158 2158 55.20      
5 A' 1751 1751 161.24      
6 A' 1476 1476 17.23      
7 A' 1400 1400 39.49      
8 A' 1218 1218 146.42      
9 A' 990 990 31.57      
10 A' 747 747 15.98      
11 A' 685 685 41.85      
12 A' 600 600 11.13      
13 A' 440 440 2.40      
14 A' 175 175 3.95      
15 A" 3130 3130 6.25      
16 A" 1483 1483 10.54      
17 A" 1052 1052 5.01      
18 A" 729 729 31.52      
19 A" 598 598 4.21      
20 A" 238 238 1.81      
21 A" 122 122 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 14356.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14356.1 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
0.34074 0.13427 0.09807

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 0.500 0.000
O3 -0.820 1.395 0.000
C4 -0.413 -0.902 0.000
C5 -0.741 -2.066 0.000
H6 1.693 1.803 0.000
H7 1.940 0.265 0.880
H8 1.940 0.265 -0.880
H9 -1.046 -3.084 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 C5 H6 H7 H8 H9
C11.51012.40422.51043.58071.08861.09281.09284.5841
C21.51011.21351.46102.67052.13692.14302.14303.7334
O32.40421.21352.33213.46152.54583.10893.10894.4845
C42.51041.46102.33211.20963.42832.76972.76972.2724
C53.58072.67053.46151.20964.57123.65973.65971.0629
H61.08862.13692.54583.42834.57121.78921.78925.6027
H71.09282.14303.10892.76973.65971.78921.75954.5722
H81.09282.14303.10892.76973.65971.78921.75954.5722
H94.58413.73344.48452.27241.06295.60274.57224.5722

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 123.582 C1 C2 C4 115.320
C2 C1 H6 109.562 C2 C1 H7 109.798
C2 C1 H8 109.798 C2 C4 C5 179.306
O3 C2 C4 121.098 C4 C5 H9 179.044
H6 C1 H7 110.214 H6 C1 H8 110.214
H7 C1 H8 107.226
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability