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

using model chemistry: MP3/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-229.540651
Energy at 298.15K-229.543518
HF Energy-228.672385
Nuclear repulsion energy143.006746
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/cc-pVTZ
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' 3515 3320 49.58      
2 A' 3206 3029 5.68      
3 A' 3089 2918 0.75      
4 A' 2251 2126 46.94      
5 A' 1857 1754 164.25      
6 A' 1487 1405 13.56      
7 A' 1416 1337 38.24      
8 A' 1241 1172 136.96      
9 A' 1007 952 19.60      
10 A' 761 718 16.00      
11 A' 692 654 40.12      
12 A' 610 577 13.19      
13 A' 444 420 2.46      
14 A' 178 168 4.02      
15 A" 3161 2986 3.86      
16 A" 1495 1412 8.91      
17 A" 1063 1004 4.70      
18 A" 728 688 34.96      
19 A" 602 569 4.41      
20 A" 246 232 1.29      
21 A" 134 127 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 14590.2 cm-1
Scaled (by 0.9447) Zero Point Vibrational Energy (zpe) 13783.4 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/cc-pVTZ
ABC
0.34394 0.13487 0.09864

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.489 0.721 0.000
C2 0.000 0.504 0.000
O3 -0.804 1.398 0.000
C4 -0.430 -0.898 0.000
C5 -0.741 -2.058 0.000
H6 1.702 1.785 0.000
H7 1.928 0.248 0.877
H8 1.928 0.248 -0.877
H9 -1.039 -3.076 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 C5 H6 H7 H8 H9
C11.50512.39122.51083.56381.08471.08901.08904.5619
C21.50511.20251.46642.66732.13012.13392.13393.7278
O32.39121.20252.32653.45702.53573.09173.09174.4805
C42.51081.46642.32651.20133.42662.76432.76432.2617
C53.56382.66733.45701.20134.55393.63483.63481.0605
H61.08472.13012.53573.42664.55391.78421.78425.5804
H71.08902.13393.09172.76433.63481.78421.75384.5409
H81.08902.13393.09172.76433.63481.78421.75384.5409
H94.56193.72784.48052.26171.06055.58044.54094.5409

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 123.664 C1 C2 C4 115.332
C2 C1 H6 109.606 C2 C1 H7 109.642
C2 C1 H8 109.642 C2 C4 C5 177.995
O3 C2 C4 121.004 C4 C5 H9 178.731
H6 C1 H7 110.328 H6 C1 H8 110.328
H7 C1 H8 107.261
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability