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

using model chemistry: MP4=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 MP4=FULL/6-31G*
 hartrees
Energy at 0K-229.347691
Energy at 298.15K-229.350317
HF Energy-228.582738
Nuclear repulsion energy141.440736
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=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' 3474 3341        
2 A' 3181 3059        
3 A' 3064 2946        
4 A' 2126 2045        
5 A' 1718 1652        
6 A' 1511 1453        
7 A' 1431 1376        
8 A' 1238 1190        
9 A' 1005 967        
10 A' 747 718        
11 A' 598 575        
12 A' 561 539        
13 A' 435 418        
14 A' 170 163        
15 A" 3140 3020        
16 A" 1513 1455        
17 A" 1065 1024        
18 A" 615 591        
19 A" 568 546        
20 A" 233 224        
21 A" 136 131        

Unscaled Zero Point Vibrational Energy (zpe) 14263.5 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 13715.8 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 MP4=FULL/6-31G*
ABC
0.33726 0.13223 0.09671

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.487 0.771 0.000
C2 0.000 0.498 0.000
O3 -0.853 1.386 0.000
C4 -0.387 -0.917 0.000
C5 -0.720 -2.093 0.000
H6 1.656 1.852 0.000
H7 1.951 0.316 0.885
H8 1.951 0.316 -0.885
H9 -1.016 -3.122 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 C5 H6 H7 H8 H9
C11.51142.41892.52103.61561.09441.09811.09814.6278
C21.51141.23121.46632.68952.13922.15002.15003.7600
O32.41891.23122.34923.48182.55183.12883.12884.5113
C42.52101.46632.34921.22323.44042.78662.78662.2938
C53.61562.68953.48181.22324.60573.70423.70421.0706
H61.09442.13922.55183.44044.60571.79731.79735.6464
H71.09812.15003.12882.78663.70421.79731.77014.6263
H81.09812.15003.12882.78663.70421.79731.77014.6263
H94.62783.76004.51132.29381.07065.64644.62634.6263

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 123.440 C1 C2 C4 115.682
C2 C1 H6 109.308 C2 C1 H7 109.941
C2 C1 H8 109.941 C2 C4 C5 179.455
O3 C2 C4 120.878 C4 C5 H9 179.818
H6 C1 H7 110.113 H6 C1 H8 110.113
H7 C1 H8 107.405
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability