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: PBEPBE/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at PBEPBE/cc-pVDZ
 hartrees
Energy at 0K-271.431852
Energy at 298.15K-271.442200
Nuclear repulsion energy242.778365
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 PBEPBE/cc-pVDZ
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 3101 3083 7.52      
2 A 3060 3043 16.40      
3 A 3051 3034 28.92      
4 A 3049 3031 1.48      
5 A 3048 3031 41.75      
6 A 3043 3026 3.69      
7 A 2989 2971 6.51      
8 A 2975 2958 4.06      
9 A 2967 2950 16.12      
10 A 2965 2948 24.41      
11 A 1741 1731 148.94      
12 A 1434 1425 18.26      
13 A 1425 1417 7.80      
14 A 1412 1404 2.47      
15 A 1408 1400 0.84      
16 A 1391 1383 9.01      
17 A 1380 1372 11.45      
18 A 1346 1338 4.19      
19 A 1324 1317 4.15      
20 A 1308 1300 52.36      
21 A 1287 1279 2.12      
22 A 1264 1257 1.95      
23 A 1208 1201 40.17      
24 A 1136 1129 2.32      
25 A 1098 1091 0.68      
26 A 1045 1039 23.25      
27 A 972 966 0.94      
28 A 927 921 1.55      
29 A 901 895 16.05      
30 A 894 888 4.32      
31 A 881 876 5.20      
32 A 706 702 6.36      
33 A 573 570 0.30      
34 A 510 507 6.54      
35 A 472 469 3.56      
36 A 322 320 1.11      
37 A 268 266 1.39      
38 A 248 247 0.31      
39 A 233 232 0.11      
40 A 206 205 0.25      
41 A 142 141 0.31      
42 A 42 42 2.48      

Unscaled Zero Point Vibrational Energy (zpe) 29874.7 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 29701.4 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 PBEPBE/cc-pVDZ
ABC
0.14974 0.08988 0.07806

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 1.604 -0.887 -0.740
C2 0.831 -0.129 -0.166
H3 1.233 1.939 0.332
H4 2.405 0.755 1.016
H5 0.749 0.959 1.736
C6 1.338 0.935 0.796
H7 -0.787 -0.846 -1.311
C8 -0.687 -0.245 -0.382
H9 -0.948 1.694 -1.395
H10 -0.808 -2.036 0.893
H11 -1.341 1.725 0.356
H12 -1.221 -0.508 1.742
H13 -2.382 -1.232 0.589
H14 -2.464 0.953 -0.799
C15 -1.304 -1.052 0.778
C16 -1.391 1.107 -0.564

Atom - Atom Distances (Å)
  O1 C2 H3 H4 H5 C6 H7 C8 H9 H10 H11 H12 H13 H14 C15 C16
O11.22573.04562.53513.20502.39862.45872.40583.68873.13124.08713.78064.21624.46533.28453.6025
C21.22572.16442.15792.19261.52122.10801.53772.82842.72872.90372.82853.48043.52552.51032.5737
H33.04562.16441.80141.77901.11073.81192.99392.79184.50342.58303.74194.81533.98913.94692.8940
H42.53512.15791.80141.81691.10464.26263.53784.23544.25803.92603.90855.20085.20014.13274.1268
H53.20502.19261.77901.81691.10933.85992.82813.63583.47962.61912.45703.99004.09223.02943.1449
C62.39861.52121.11071.10461.10933.48212.62303.25563.66662.82763.08714.31024.12253.30573.0535
H72.45872.10803.81194.26263.85993.48211.11032.54642.50493.11383.10252.51092.51172.16152.1760
C82.40581.53772.99393.53782.82812.62301.11032.20352.20192.20382.20682.18922.18351.54191.5356
H93.68872.82842.79184.23543.63583.25562.54642.20354.37831.79493.84283.81531.78953.51971.1091
H103.13122.72874.50344.25803.47963.66662.50492.20194.37833.83681.79681.79373.81311.10823.5135
H114.08712.90372.58303.92602.61912.82763.11382.20381.79493.83682.63123.14351.78612.80911.1099
H123.78062.82853.74193.90852.45703.08713.10252.20683.84281.79682.63121.78893.18371.11052.8212
H134.21623.48044.81535.20083.99004.31022.51092.18923.81531.79373.14351.78892.59001.10932.7903
H144.46533.52553.98915.20014.09224.12252.51172.18351.78953.81311.78613.18372.59002.80201.1092
C153.28452.51033.94694.13273.02943.30572.16151.54193.51971.10822.80911.11051.10932.80202.5438
C163.60252.57372.89404.12683.14493.05352.17601.53561.10913.51351.10992.82122.79031.10922.5438

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 121.286 O1 C2 C8 120.637
C2 C6 H3 109.656 C2 C6 H4 109.509
C2 C6 H5 111.968 C2 C8 H7 104.354
C2 C8 C15 109.200 C2 C8 C16 113.744
H3 C6 H4 108.807 H3 C6 H5 106.514
H4 C6 H5 110.301 C6 C2 C8 118.069
H7 C8 C15 108.066 H7 C8 C16 109.610
C8 C15 H10 111.323 C8 C15 H12 111.576
C8 C15 H13 110.256 C8 C16 H9 111.839
C8 C16 H11 111.822 C8 C16 H14 110.256
H9 C16 H11 107.976 H9 C16 H14 107.543
H10 C15 H12 108.162 H10 C15 H13 107.970
H11 C16 H14 107.193 H12 C15 H13 107.396
C15 C8 C16 111.496
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.183      
2 C 0.018      
3 H 0.062      
4 H 0.046      
5 H 0.048      
6 C -0.037      
7 H 0.014      
8 C -0.131      
9 H 0.037      
10 H 0.043      
11 H 0.030      
12 H 0.031      
13 H 0.036      
14 H 0.035      
15 C -0.024      
16 C -0.026      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.754 1.511 1.156 2.588
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.608 3.116 2.399
y 3.116 -38.687 -1.234
z 2.399 -1.234 -38.490
Traceless
 xyz
x -2.020 3.116 2.399
y 3.116 0.862 -1.234
z 2.399 -1.234 1.158
Polar
3z2-r22.315
x2-y2-1.921
xy3.116
xz2.399
yz-1.234


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.746 0.037 0.067
y 0.037 8.843 0.372
z 0.067 0.372 8.130


<r2> (average value of r2) Å2
<r2> 181.877
(<r2>)1/2 13.486