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

using model chemistry: MP4/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP4/TZVP
 hartrees
Energy at 0K-229.469835
Energy at 298.15K-229.472207
HF Energy-228.661492
Nuclear repulsion energy141.751810
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 MP4/TZVP
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' 3478 3349        
2 A' 3173 3055        
3 A' 3056 2943        
4 A' 2103 2025        
5 A' 1679 1617        
6 A' 1482 1427        
7 A' 1408 1356        
8 A' 1210 1165        
9 A' 988 951        
10 A' 736 709        
11 A' 620 597        
12 A' 575 554        
13 A' 435 419        
14 A' 156 151        
15 A" 3134 3018        
16 A" 1478 1423        
17 A" 1039 1000        
18 A" 607 585        
19 A" 516 497        
20 A" 127 122        
21 A" 93 90        

Unscaled Zero Point Vibrational Energy (zpe) 14046.7 cm-1
Scaled (by 0.9629) Zero Point Vibrational Energy (zpe) 13525.6 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 MP4/TZVP
ABC
0.33691 0.13306 0.09711

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.496 0.730 0.000
C2 0.000 0.503 0.000
O3 -0.824 1.410 0.000
C4 -0.416 -0.904 0.000
C5 -0.737 -2.079 0.000
H6 1.704 1.800 0.000
H7 1.938 0.258 0.882
H8 1.938 0.258 -0.882
H9 -1.046 -3.099 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 C5 H6 H7 H8 H9
C11.51292.41732.51463.58871.09011.09381.09384.5953
C21.51291.22551.46662.68532.14172.14372.14373.7501
O32.41731.22552.34943.49042.55793.12013.12014.5141
C42.51461.46662.34941.21883.43572.76962.76962.2836
C53.58872.68533.49041.21884.58363.66093.66091.0649
H61.09012.14172.55793.43574.58361.79161.79165.6176
H71.09382.14373.12012.76963.66091.79161.76394.5773
H81.09382.14373.12012.76963.66091.79161.76394.5773
H94.59533.75014.51412.28361.06495.61764.57734.5773

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 123.606 C1 C2 C4 115.109
C2 C1 H6 109.654 C2 C1 H7 109.596
C2 C1 H8 109.596 C2 C4 C5 178.819
O3 C2 C4 121.284 C4 C5 H9 178.463
H6 C1 H7 110.241 H6 C1 H8 110.241
H7 C1 H8 107.479
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability