return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: BLYP/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 BLYP/cc-pVTZ
 hartrees
Energy at 0K-229.992229
Energy at 298.15K-229.994835
HF Energy-229.992229
Nuclear repulsion energy141.784963
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 BLYP/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' 3390 3380 47.24      
2 A' 3064 3055 8.48      
3 A' 2961 2953 1.33      
4 A' 2118 2111 41.72      
5 A' 1657 1652 163.02      
6 A' 1426 1422 17.92      
7 A' 1345 1341 29.47      
8 A' 1163 1159 141.80      
9 A' 944 941 44.99      
10 A' 714 712 11.14      
11 A' 624 622 44.17      
12 A' 579 577 6.13      
13 A' 425 424 2.61      
14 A' 168 168 4.69      
15 A" 3011 3002 5.85      
16 A" 1432 1427 8.31      
17 A" 1013 1010 4.25      
18 A" 690 688 32.31      
19 A" 577 575 2.81      
20 A" 224 224 1.54      
21 A" 100 100 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 13812.2 cm-1
Scaled (by 0.997) Zero Point Vibrational Energy (zpe) 13770.7 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 BLYP/cc-pVTZ
ABC
0.33657 0.13332 0.09722

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.499 0.750 0.000
C2 0.000 0.494 0.000
O3 -0.836 1.390 0.000
C4 -0.406 -0.909 0.000
C5 -0.739 -2.074 0.000
H6 1.688 1.827 0.000
H7 1.961 0.286 0.882
H8 1.961 0.286 -0.882
H9 -1.054 -3.093 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 C5 H6 H7 H8 H9
C11.52082.42092.52603.60321.09331.09831.09834.6147
C21.52081.22531.46042.67212.15082.16012.16013.7394
O32.42091.22532.33903.46562.56113.13313.13314.4892
C42.52601.46042.33901.21173.44512.79402.79402.2790
C53.60322.67213.46561.21174.59413.69243.69241.0675
H61.09332.15082.56113.44514.59411.79631.79635.6333
H71.09832.16013.13312.79403.69241.79631.76404.6144
H81.09832.16013.13312.79403.69241.79631.76404.6144
H94.61473.73944.48922.27901.06755.63334.61444.6144

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 123.300 C1 C2 C4 115.824
C2 C1 H6 109.642 C2 C1 H7 110.071
C2 C1 H8 110.071 C2 C4 C5 179.813
O3 C2 C4 120.876 C4 C5 H9 178.725
H6 C1 H7 110.092 H6 C1 H8 110.092
H7 C1 H8 106.837
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.266      
2 C 0.180      
3 O -0.227      
4 C 0.053      
5 C -0.189      
6 H 0.109      
7 H 0.103      
8 H 0.103      
9 H 0.135      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.927 -2.168 0.000 2.901
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.600 4.785 0.000
y 4.785 -26.737 0.000
z 0.000 0.000 -29.347
Traceless
 xyz
x -1.557 4.785 0.000
y 4.785 2.736 0.000
z 0.000 0.000 -1.179
Polar
3z2-r2-2.358
x2-y2-2.862
xy4.785
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.847 1.106 0.000
y 1.106 10.170 0.000
z 0.000 0.000 4.583


<r2> (average value of r2) Å2
<r2> 118.515
(<r2>)1/2 10.886