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 C5H10O (2-Butanone, 3-methyl-)

using model chemistry: HF/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at HF/Def2TZVPP
 hartrees
Energy at 0K-270.137174
Energy at 298.15K-270.148098
HF Energy-270.137174
Nuclear repulsion energy245.944866
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 HF/Def2TZVPP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3278 2971 16.93      
2 A 3237 2934 54.12      
3 A 3232 2930 41.17      
4 A 3231 2928 50.04      
5 A 3221 2919 27.03      
6 A 3218 2917 10.51      
7 A 3198 2899 0.88      
8 A 3177 2880 7.33      
9 A 3164 2868 14.22      
10 A 3160 2864 31.45      
11 A 1969 1785 256.69      
12 A 1629 1477 16.69      
13 A 1623 1471 5.85      
14 A 1613 1462 2.17      
15 A 1608 1457 1.02      
16 A 1598 1449 7.65      
17 A 1584 1435 11.50      
18 A 1547 1402 3.68      
19 A 1526 1383 3.04      
20 A 1522 1379 32.04      
21 A 1471 1333 2.34      
22 A 1458 1321 2.18      
23 A 1366 1238 45.45      
24 A 1287 1166 4.23      
25 A 1224 1110 1.23      
26 A 1190 1078 14.42      
27 A 1097 994 2.37      
28 A 1041 944 0.48      
29 A 1025 929 16.09      
30 A 1006 912 0.53      
31 A 955 866 2.91      
32 A 769 697 3.74      
33 A 655 593 1.21      
34 A 564 512 12.34      
35 A 534 484 5.98      
36 A 356 323 1.62      
37 A 291 264 1.76      
38 A 274 248 0.40      
39 A 253 229 0.45      
40 A 225 204 0.68      
41 A 139 126 0.04      
42 A 56 51 4.75      

Unscaled Zero Point Vibrational Energy (zpe) 32784.0 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 29715.4 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 HF/Def2TZVPP
ABC
0.15319 0.09081 0.08024

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 1.539 -0.860 -0.775
C2 0.815 -0.134 -0.172
H3 1.332 1.855 0.382
H4 2.425 0.621 0.997
H5 0.835 0.868 1.734
C6 1.390 0.860 0.805
H7 -0.814 -0.767 -1.300
C8 -0.690 -0.219 -0.375
H9 -0.919 1.734 -1.310
H10 -0.853 -2.025 0.825
H11 -1.315 1.721 0.398
H12 -1.223 -0.557 1.714
H13 -2.372 -1.194 0.562
H14 -2.412 1.013 -0.760
C15 -1.316 -1.049 0.753
C16 -1.366 1.145 -0.518

Atom - Atom Distances (Å)
  O1 C2 H3 H4 H5 C6 H7 C8 H9 H10 H11 H12 H13 H14 C15 C16
O11.18892.95902.47293.12602.34042.41262.35313.61363.10404.02283.72944.14684.37283.24353.5392
C21.18892.12892.12752.15341.50822.08011.52102.79132.71142.88182.80883.43863.47542.49752.5521
H32.95902.12891.75941.74601.08323.78322.99412.81844.47492.65073.75774.80134.00433.94822.9310
H42.47292.12751.75941.76911.07874.20583.50524.21164.21543.94373.89925.14695.16094.10404.1151
H53.12602.15341.74601.76911.08143.82052.82043.61803.47012.67092.50333.98884.09693.04423.1605
C62.34041.50821.08321.07871.08143.45522.62383.25113.65412.86793.10814.29344.11493.31263.0702
H72.41262.08013.78324.20583.82053.45521.08212.50362.46953.05383.04862.46572.45272.13222.1390
C82.35311.52102.99413.50522.82042.62381.08212.17752.17412.18012.18232.15882.15251.53441.5295
H93.61362.79132.81844.21163.61803.25112.50362.17754.32321.75383.80593.76721.74773.48721.0835
H103.10402.71144.47494.21543.47013.65412.46952.17414.32323.79761.75491.75143.76401.08213.4806
H114.02282.88182.65073.94372.67092.86793.05382.18011.75383.79762.63183.10451.74542.79241.0828
H123.72942.80883.75773.89922.50333.10813.04862.18233.80591.75492.63181.74713.16191.08362.8103
H134.14683.43864.80135.14693.98884.29342.46572.15883.76721.75143.10451.74712.57261.08262.7663
H144.37283.47544.00435.16094.09694.11492.45272.15251.74773.76401.74543.16192.57262.78221.0826
C153.24352.49753.94824.10403.04423.31262.13221.53443.48721.08212.79241.08361.08262.78222.5364
C163.53922.55212.93104.11513.16053.07022.13901.52951.08353.48061.08282.81032.76631.08262.5364

picture of 2-Butanone, 3-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C6 119.933 O1 C2 C8 120.029
C2 C6 H3 109.381 C2 C6 H4 109.530
C2 C6 H5 111.448 C2 C8 H7 104.830
C2 C8 C15 109.649 C2 C8 C16 113.565
H3 C6 H4 108.938 H3 C6 H5 107.527
H4 C6 H5 109.962 C6 C2 C8 120.034
H7 C8 C15 107.904 H7 C8 C16 108.765
C8 C15 H10 111.206 C8 C15 H12 111.773
C8 C15 H13 109.956 C8 C16 H9 111.745
C8 C16 H11 112.000 C8 C16 H14 109.796
H9 C16 H11 108.112 H9 C16 H14 107.574
H10 C15 H12 108.244 H10 C15 H13 108.003
H11 C16 H14 107.420 H12 C15 H13 107.510
C15 C8 C16 111.750
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.417      
2 C 0.298      
3 H 0.072      
4 H 0.110      
5 H 0.066      
6 C -0.233      
7 H 0.044      
8 C 0.131      
9 H 0.073      
10 H 0.086      
11 H 0.055      
12 H 0.053      
13 H 0.065      
14 H 0.070      
15 C -0.240      
16 C -0.233      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.148 1.797 1.556 3.203
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.475 3.735 3.398
y 3.735 -39.302 -1.596
z 3.398 -1.596 -39.049
Traceless
 xyz
x -2.299 3.735 3.398
y 3.735 0.960 -1.596
z 3.398 -1.596 1.339
Polar
3z2-r22.678
x2-y2-2.173
xy3.735
xz3.398
yz-1.596


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.322 -0.136 -0.104
y -0.136 8.624 0.274
z -0.104 0.274 8.137


<r2> (average value of r2) Å2
<r2> 179.085
(<r2>)1/2 13.382