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 (Pentanal)

using model chemistry: PBEPBE/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 PBEPBE/Def2TZVPP
 hartrees
Energy at 0K-271.520167
Energy at 298.15K-271.530737
HF Energy-271.520167
Nuclear repulsion energy230.019084
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/Def2TZVPP
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' 3039 3002 31.76      
2 A' 2972 2936 36.65      
3 A' 2965 2929 20.37      
4 A' 2945 2909 21.74      
5 A' 2928 2892 22.06      
6 A' 2767 2734 169.70      
7 A' 1749 1728 154.92      
8 A' 1457 1440 9.09      
9 A' 1442 1425 0.83      
10 A' 1432 1415 0.87      
11 A' 1391 1374 16.06      
12 A' 1366 1349 10.59      
13 A' 1361 1345 2.27      
14 A' 1347 1331 6.07      
15 A' 1316 1300 18.60      
16 A' 1235 1220 6.29      
17 A' 1105 1091 10.12      
18 A' 1053 1040 0.23      
19 A' 1018 1005 1.88      
20 A' 897 886 1.21      
21 A' 868 857 17.27      
22 A' 675 666 10.70      
23 A' 383 379 2.01      
24 A' 279 275 3.57      
25 A' 130 128 4.94      
26 A" 3032 2996 48.95      
27 A" 3010 2974 21.24      
28 A" 2971 2935 5.77      
29 A" 2950 2914 6.48      
30 A" 1445 1428 7.80      
31 A" 1286 1271 0.23      
32 A" 1263 1247 0.05      
33 A" 1192 1178 0.03      
34 A" 1113 1100 0.40      
35 A" 945 933 0.53      
36 A" 826 816 0.15      
37 A" 721 713 2.63      
38 A" 637 629 3.73      
39 A" 225 223 0.00      
40 A" 182 180 0.79      
41 A" 107 106 0.95      
42 A" 63 62 1.82      

Unscaled Zero Point Vibrational Energy (zpe) 30042.4 cm-1
Scaled (by 0.9879) Zero Point Vibrational Energy (zpe) 29678.9 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/Def2TZVPP
ABC
0.34846 0.04818 0.04369

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.831 -2.069 0.000
C2 -0.352 -1.131 0.000
C3 0.000 0.356 0.000
C4 -1.233 1.265 0.000
C5 -0.876 2.754 0.000
O6 1.995 -1.719 0.000
H7 0.570 -3.158 0.000
H8 -0.974 -1.398 0.874
H9 -0.974 -1.398 -0.874
H10 0.627 0.578 -0.877
H11 0.627 0.578 0.877
H12 -1.856 1.036 0.881
H13 -1.856 1.036 -0.881
H14 -1.775 3.386 0.000
H15 -0.282 3.017 -0.887
H16 -0.282 3.017 0.887

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 O6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
C11.51002.56333.92155.11611.21471.12072.11462.11462.79542.79544.19944.19946.04545.28095.2809
C21.51001.52802.55293.91992.41952.22771.10561.10562.15582.15582.78052.78054.73574.24194.2419
C32.56331.52801.53232.55302.87853.56062.18892.18891.10081.10082.16392.16393.51162.81882.8188
C43.92152.55291.53231.53104.39644.77732.81562.81562.16892.16891.10271.10272.18892.18182.1818
C55.11613.91992.55301.53105.31546.08694.24484.24482.78672.78672.16522.16521.09871.09961.0996
O61.21472.41952.87854.39645.31542.02493.11113.11112.81342.81344.81604.81606.34635.32925.3292
H71.12072.22773.56064.77736.08692.02492.49912.49913.83833.83834.92484.92486.95216.29666.2966
H82.11461.10562.18892.81564.24483.11112.49911.74813.08812.54372.58933.12794.92954.80384.4694
H92.11461.10562.18892.81564.24483.11112.49911.74812.54373.08813.12792.58934.92954.46944.8038
H102.79542.15581.10082.16892.78672.81343.83833.08812.54371.75383.07672.52523.79832.60303.1442
H112.79542.15581.10082.16892.78672.81343.83832.54373.08811.75382.52523.07673.79833.14422.6030
H124.19942.78052.16391.10272.16524.81604.92482.58933.12793.07672.52521.76162.51133.08672.5305
H134.19942.78052.16391.10272.16524.81604.92483.12792.58932.52523.07671.76162.51132.53053.0867
H146.04544.73573.51162.18891.09876.34636.95214.92954.92953.79833.79832.51132.51131.77561.7756
H155.28094.24192.81882.18181.09965.32926.29664.80384.46942.60303.14423.08672.53051.77561.7737
H165.28094.24192.81882.18181.09965.32926.29664.46944.80383.14422.60302.53053.08671.77561.7737

picture of Pentanal state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 115.073 C1 C2 H8 106.871
C1 C2 H9 106.871 C2 C1 O6 124.888
C2 C1 H7 114.926 C2 C3 C4 113.069
C2 C3 H10 109.108 C2 C3 H11 109.108
C3 C2 H8 111.433 C3 C2 H9 111.433
C3 C4 C5 112.905 C3 C4 H12 109.327
C3 C4 H13 109.327 C4 C3 H10 109.832
C4 C3 H11 109.832 C4 C5 H14 111.633
C4 C5 H15 111.013 C4 C5 H16 111.013
C5 C4 H12 109.516 C5 C4 H13 109.516
O6 C1 H7 120.186 H8 C2 H9 104.482
H10 C3 H11 105.618 H12 C4 H13 106.018
H14 C5 H15 107.743 H14 C5 H16 107.743
H15 C5 H16 107.514
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.055      
2 C -0.048      
3 C -0.086      
4 C -0.078      
5 C -0.255      
6 O -0.236      
7 H 0.046      
8 H 0.068      
9 H 0.068      
10 H 0.062      
11 H 0.062      
12 H 0.053      
13 H 0.053      
14 H 0.081      
15 H 0.077      
16 H 0.077      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.638 0.068 0.000 2.638
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -45.460 4.043 0.000
y 4.043 -37.938 0.000
z 0.000 0.000 -37.697
Traceless
 xyz
x -7.643 4.043 0.000
y 4.043 3.641 0.000
z 0.000 0.000 4.002
Polar
3z2-r28.005
x2-y2-7.522
xy4.043
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.284 -0.656 0.000
y -0.656 11.760 0.000
z 0.000 0.000 8.017


<r2> (average value of r2) Å2
<r2> 254.329
(<r2>)1/2 15.948