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All results from a given calculation for C5H10O (2-Pentanone)

using model chemistry: B2PLYP/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 B2PLYP/6-31G*
 hartrees
Energy at 0K-271.459286
Energy at 298.15K 
HF Energy-271.185893
Nuclear repulsion energy235.444236
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 B2PLYP/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' 3200 3037 9.91      
2 A' 3153 2993 36.87      
3 A' 3098 2941 17.71      
4 A' 3082 2925 5.78      
5 A' 3074 2918 26.89      
6 A' 3049 2894 12.62      
7 A' 1797 1706 108.83      
8 A' 1557 1478 4.32      
9 A' 1538 1460 2.58      
10 A' 1517 1440 17.26      
11 A' 1505 1428 2.74      
12 A' 1460 1386 2.03      
13 A' 1440 1367 42.55      
14 A' 1429 1356 15.42      
15 A' 1354 1285 14.78      
16 A' 1211 1150 65.80      
17 A' 1154 1095 0.13      
18 A' 1076 1022 0.17      
19 A' 984 934 3.78      
20 A' 925 878 8.62      
21 A' 838 796 0.68      
22 A' 598 568 12.56      
23 A' 397 377 1.09      
24 A' 344 327 2.98      
25 A' 177 168 4.53      
26 A" 3152 2991 65.86      
27 A" 3147 2987 5.42      
28 A" 3128 2970 0.18      
29 A" 3081 2924 9.22      
30 A" 1551 1472 5.91      
31 A" 1525 1448 10.77      
32 A" 1353 1285 0.15      
33 A" 1283 1218 0.00      
34 A" 1169 1109 0.97      
35 A" 1001 950 1.04      
36 A" 857 813 0.36      
37 A" 741 703 3.64      
38 A" 477 453 0.11      
39 A" 251 238 0.04      
40 A" 100 95 0.04      
41 A" 90 85 0.63      
42 A" 7i 7i 0.41      

Unscaled Zero Point Vibrational Energy (zpe) 31426.0 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 29829.6 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 B2PLYP/6-31G*
ABC
0.27799 0.05965 0.05096

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.429 1.327 0.000
C2 -1.461 0.145 0.000
C3 0.000 0.587 0.000
C4 0.992 -0.567 0.000
C5 2.464 -0.196 0.000
O6 0.626 -1.732 0.000
H7 -3.468 0.986 0.000
H8 -2.286 1.958 0.883
H9 -2.286 1.958 -0.883
H10 -1.640 -0.490 0.873
H11 -1.640 -0.490 -0.873
H12 0.216 1.221 -0.872
H13 0.216 1.221 0.872
H14 3.070 -1.102 0.000
H15 2.706 0.408 -0.880
H16 2.706 0.408 0.880

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 O6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
C11.52862.53923.91055.12454.32331.09361.09491.09492.16542.16542.78672.78676.01195.29035.2903
C21.52861.52622.55393.93922.80622.17652.17952.17951.09411.09412.17442.17444.69924.26664.2666
C32.53921.52621.52192.58542.40183.49082.80812.80812.14762.14761.09921.09923.50432.85122.8512
C43.91052.55391.52191.51751.22094.72274.23104.23102.77402.77402.13502.13502.14582.15912.1591
C55.12453.93922.58541.51752.39456.04845.28985.28984.20574.20572.79692.79691.09001.09491.0949
O64.32332.80622.40181.22092.39454.91394.78274.78272.72702.72703.10553.10552.52373.11083.1108
H71.09362.17653.49084.72276.04844.91391.76701.76702.50672.50673.79263.79266.86346.26306.2630
H81.09492.17952.80814.23105.28984.78271.76701.76692.53253.08173.14372.60806.23175.51675.2271
H91.09492.17952.80814.23105.28984.78271.76701.76693.08172.53252.60803.14376.23175.22715.5167
H102.16541.09412.14762.77404.20572.72702.50672.53253.08171.74523.06832.52414.82914.77144.4377
H112.16541.09412.14762.77404.20572.72702.50673.08172.53251.74522.52413.06834.82914.43774.7714
H122.78672.17441.09922.13502.79693.10553.79263.14372.60803.06832.52411.74403.78212.61963.1517
H132.78672.17441.09922.13502.79693.10553.79262.60803.14372.52413.06831.74403.78213.15172.6196
H146.01194.69923.50432.14581.09002.52376.86346.23176.23174.82914.82913.78213.78211.78541.7854
H155.29034.26662.85122.15911.09493.11086.26305.51675.22714.77144.43772.61963.15171.78541.7609
H165.29034.26662.85122.15911.09493.11086.26305.22715.51674.43774.77143.15172.61961.78541.7609

picture of 2-Pentanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 112.453 C1 C2 H10 110.205
C1 C2 H11 110.205 C2 C1 H7 111.122
C2 C1 H8 111.282 C2 C1 H9 111.282
C2 C3 C4 113.833 C2 C3 H12 110.784
C2 C3 H13 110.784 C3 C2 H10 108.977
C3 C2 H11 108.977 C3 C4 C5 116.563
C3 C4 O6 121.865 C4 C3 H12 108.007
C4 C3 H13 108.007 C4 C5 H14 109.671
C4 C5 H15 110.433 C4 C5 H16 110.433
C5 C4 O6 121.572 H7 C1 H8 107.692
H7 C1 H9 107.692 H8 C1 H9 107.590
H10 C2 H11 105.795 H12 C3 H13 104.995
H14 C5 H15 109.603 H14 C5 H16 109.603
H15 C5 H16 107.056
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.465      
2 C -0.265      
3 C -0.377      
4 C 0.484      
5 C -0.548      
6 O -0.482      
7 H 0.158      
8 H 0.147      
9 H 0.147      
10 H 0.163      
11 H 0.163      
12 H 0.166      
13 H 0.166      
14 H 0.193      
15 H 0.175      
16 H 0.175      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.151 -0.261 0.000
y -0.261 8.314 0.000
z 0.000 0.000 6.609


<r2> (average value of r2) Å2
<r2> 228.603
(<r2>)1/2 15.120