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

using model chemistry: B2PLYP=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 B2PLYP=FULL/6-31G
 hartrees
Energy at 0K-229.601513
Energy at 298.15K-229.604414
HF Energy-229.428829
Nuclear repulsion energy141.137608
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/6-31G
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' 3506 3506 43.36      
2 A' 3191 3191 7.65      
3 A' 3069 3069 2.03      
4 A' 2166 2166 62.66      
5 A' 1642 1642 91.21      
6 A' 1524 1524 30.98      
7 A' 1457 1457 27.51      
8 A' 1248 1248 144.71      
9 A' 1028 1028 27.48      
10 A' 755 755 11.13      
11 A' 710 710 47.10      
12 A' 623 623 24.65      
13 A' 447 447 2.55      
14 A' 190 190 4.11      
15 A" 3140 3140 7.69      
16 A" 1533 1533 12.69      
17 A" 1093 1093 5.46      
18 A" 726 726 42.20      
19 A" 635 635 6.67      
20 A" 259 259 1.28      
21 A" 122 122 0.07      

Unscaled Zero Point Vibrational Energy (zpe) 14532.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14532.8 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/6-31G
ABC
0.33652 0.13178 0.09640

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.482 0.782 0.000
C2 0.000 0.481 0.000
O3 -0.862 1.391 0.000
C4 -0.382 -0.922 0.000
C5 -0.707 -2.100 0.000
H6 1.627 1.863 0.000
H7 1.960 0.344 0.883
H8 1.960 0.344 -0.883
H9 -1.004 -3.123 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 C5 H6 H7 H8 H9
C11.51172.42142.52513.61911.09111.09591.09594.6292
C21.51171.25311.45482.67682.13472.15412.15413.7421
O32.42141.25312.36263.49452.53373.13703.13704.5166
C42.52511.45482.36261.22203.43442.80462.80462.2874
C53.61912.67683.49451.22204.59983.72383.72381.0654
H61.09112.13472.53373.43444.59981.78891.78895.6383
H71.09592.15413.13702.80463.72381.78891.76654.6460
H81.09592.15413.13702.80463.72381.78891.76654.6460
H94.62923.74214.51662.28741.06545.63834.64604.6460

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 122.006 C1 C2 C4 116.676
C2 C1 H6 109.135 C2 C1 H7 110.385
C2 C1 H8 110.385 C2 C4 C5 179.757
O3 C2 C4 121.318 C4 C5 H9 179.289
H6 C1 H7 109.759 H6 C1 H8 109.759
H7 C1 H8 107.400
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability