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 (3-Pentanone)

using model chemistry: QCISD(T)=FULL/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD(T)=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-271.447120
Energy at 298.15K 
HF Energy-270.125927
Nuclear repulsion energy239.551536
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 QCISD(T)=FULL/6-311+G(3df,2p)
Rotational Constants (cm-1) from geometry optimized at QCISD(T)=FULL/6-311+G(3df,2p)
ABC
0.29806 0.06564 0.05600

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.281
C2 0.000 0.000 0.067
C3 0.000 1.288 -0.735
C4 0.000 -1.288 -0.735
C5 0.000 2.535 0.134
C6 0.000 -2.535 0.134
H7 0.872 1.265 -1.399
H8 -0.872 1.265 -1.399
H9 -0.872 -1.265 -1.399
H10 0.872 -1.265 -1.399
H11 0.000 3.435 -0.483
H12 -0.878 2.556 0.779
H13 0.878 2.556 0.779
H14 0.000 -3.435 -0.483
H15 0.878 -2.556 0.779
H16 -0.878 -2.556 0.779

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
O11.21382.39262.39262.78292.78293.08903.08903.08903.08903.86112.74912.74913.86112.74912.7491
C21.21381.51741.51742.53632.53632.12352.12352.12352.12353.47842.79512.79513.47842.79512.7951
C32.39261.51742.57551.52063.92071.09581.09582.77772.77772.16172.16202.16204.72914.22404.2240
C42.39261.51742.57553.92071.52062.77772.77771.09581.09584.72914.22404.22402.16172.16202.1620
C52.78292.53631.52063.92075.07082.17342.17344.18944.18941.09041.08981.08986.00185.20715.2071
C62.78292.53633.92071.52065.07084.18944.18942.17342.17346.00185.20715.20711.09041.08981.0898
H73.08902.12351.09582.77772.17344.18941.74353.07222.52962.51143.07802.53234.86654.39844.7336
H83.08902.12351.09582.77772.17344.18941.74352.52963.07222.51142.53233.07804.86654.73364.3984
H93.08902.12352.77771.09584.18942.17343.07222.52961.74354.86654.39844.73362.51143.07802.5323
H103.08902.12352.77771.09584.18942.17342.52963.07221.74354.86654.73364.39842.51142.53233.0780
H113.86113.47842.16174.72911.09046.00182.51142.51144.86654.86651.77061.77066.86926.18516.1851
H122.74912.79512.16204.22401.08985.20713.07802.53234.39844.73361.77061.75586.18515.40595.1128
H132.74912.79512.16204.22401.08985.20712.53233.07804.73364.39841.77061.75586.18515.11285.4059
H143.86113.47844.72912.16176.00181.09044.86654.86652.51142.51146.86926.18516.18511.77061.7706
H152.74912.79514.22402.16205.20711.08984.39844.73363.07802.53236.18515.40595.11281.77061.7558
H162.74912.79514.22402.16205.20711.08984.73364.39842.53233.07806.18515.11285.40591.77061.7558

picture of 3-Pentanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 121.936 O1 C2 C4 121.936
C2 C3 C5 113.199 C2 C3 H7 107.610
C2 C3 H8 107.610 C2 C4 C6 113.199
C2 C4 H9 107.610 C2 C4 H10 107.610
C3 C2 C4 116.128 C3 C5 H11 110.687
C3 C5 H12 110.752 C3 C5 H13 110.752
C4 C6 H14 110.687 C4 C6 H15 110.752
C4 C6 H16 110.752 C5 C3 H7 111.304
C5 C3 H8 111.304 C6 C4 H9 111.304
C6 C4 H10 111.304 H7 C3 H8 105.416
H9 C4 H10 105.416 H11 C5 H12 108.609
H11 C5 H13 108.609 H12 C5 H13 107.330
H14 C6 H15 108.609 H14 C6 H16 108.609
H15 C6 H16 107.330
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability