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: B3PW91/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at B3PW91/STO-3G
 hartrees
Energy at 0K-268.298541
Energy at 298.15K-268.308885
Nuclear repulsion energy226.932089
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 B3PW91/STO-3G
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' 3504 3101 1.70      
2 A' 3370 2982 4.77      
3 A' 3358 2972 1.88      
4 A' 3337 2953 3.54      
5 A' 3332 2949 2.48      
6 A' 3180 2814 50.92      
7 A' 1875 1659 36.69      
8 A' 1701 1506 3.65      
9 A' 1684 1491 0.87      
10 A' 1670 1478 1.98      
11 A' 1649 1460 5.73      
12 A' 1582 1400 0.62      
13 A' 1552 1373 0.18      
14 A' 1495 1323 1.64      
15 A' 1472 1303 31.18      
16 A' 1381 1222 0.26      
17 A' 1226 1085 9.77      
18 A' 1164 1030 0.55      
19 A' 1135 1005 1.45      
20 A' 998 883 0.70      
21 A' 949 840 9.19      
22 A' 690 610 5.80      
23 A' 408 361 0.73      
24 A' 287 254 0.99      
25 A' 132 117 1.67      
26 A" 3506 3103 3.04      
27 A" 3480 3079 3.30      
28 A" 3462 3064 0.49      
29 A" 3437 3042 0.12      
30 A" 1690 1495 3.99      
31 A" 1438 1272 0.01      
32 A" 1416 1253 0.00      
33 A" 1346 1191 0.07      
34 A" 1216 1076 0.09      
35 A" 1034 915 0.94      
36 A" 901 797 0.54      
37 A" 799 707 3.46      
38 A" 730 646 7.85      
39 A" 226 200 0.00      
40 A" 151 134 0.31      
41 A" 103 92 0.62      
42 A" 53 47 0.86      

Unscaled Zero Point Vibrational Energy (zpe) 34057.5 cm-1
Scaled (by 0.885) Zero Point Vibrational Energy (zpe) 30140.9 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 B3PW91/STO-3G
ABC
0.32931 0.04731 0.04270

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.815 -2.108 0.000
C2 -0.406 -1.140 0.000
C3 0.000 0.355 0.000
C4 -1.233 1.300 0.000
C5 -0.829 2.794 0.000
O6 2.012 -1.758 0.000
H7 0.509 -3.194 0.000
H8 -1.024 -1.375 0.886
H9 -1.024 -1.375 -0.886
H10 0.622 0.561 -0.886
H11 0.622 0.561 0.886
H12 -1.853 1.088 0.887
H13 -1.853 1.088 -0.887
H14 -1.721 3.437 0.000
H15 -0.231 3.035 -0.890
H16 -0.231 3.035 0.890

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 O6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
C11.55812.59493.97635.17101.24761.12762.16892.16892.81932.81934.25734.25736.09775.32395.3239
C21.55811.54952.57643.95722.49562.24761.10511.10512.17642.17642.80142.80144.76234.27304.2730
C32.59491.54951.55352.57612.91783.58492.19632.19631.10241.10242.18152.18153.52972.83362.8336
C43.97632.57641.55351.54854.45894.81902.82482.82482.18522.18521.10291.10292.19212.19342.1934
C55.17103.95722.57611.54855.36596.13534.26634.26632.80702.80702.17902.17901.09961.09951.0995
O61.24762.49562.91784.45895.36592.07933.18573.18572.84492.84494.88144.88146.39705.36625.3662
H71.12762.24763.58494.81906.13532.07932.53792.53793.85943.85944.96964.96966.99516.33546.3354
H82.16891.10512.19632.82484.26633.18572.53791.77153.09772.54072.59853.14594.94154.81974.4805
H92.16891.10512.19632.82484.26633.18572.53791.77152.54073.09773.14592.59854.94154.48054.8197
H102.81932.17641.10242.18522.80702.84493.85943.09772.54071.77273.09072.53103.81422.61723.1634
H112.81932.17641.10242.18522.80702.84493.85942.54073.09771.77272.53103.09073.81423.16342.6172
H124.25732.80142.18151.10292.17904.88144.96962.59853.14593.09072.53101.77492.51423.09602.5346
H134.25732.80142.18151.10292.17904.88144.96963.14592.59852.53103.09071.77492.51422.53463.0960
H146.09774.76233.52972.19211.09966.39706.99514.94154.94153.81423.81422.51422.51421.78221.7822
H155.32394.27302.83362.19341.09955.36626.33544.81974.48052.61723.16343.09602.53461.78221.7809
H165.32394.27302.83362.19341.09955.36626.33544.48054.81973.16342.61722.53463.09601.78221.7809

picture of Pentanal state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 113.238 C1 C2 H8 107.843
C1 C2 H9 107.843 C2 C1 O6 125.255
C2 C1 H7 112.636 C2 C3 C4 112.264
C2 C3 H10 109.147 C2 C3 H11 109.147
C3 C2 H8 110.545 C3 C2 H9 110.545
C3 C4 C5 112.297 C3 C4 H12 109.239
C3 C4 H13 109.239 C4 C3 H10 109.558
C4 C3 H11 109.558 C4 C5 H14 110.604
C4 C5 H15 110.715 C4 C5 H16 110.715
C5 C4 H12 109.388 C5 C4 H13 109.388
O6 C1 H7 122.109 H8 C2 H9 106.552
H10 C3 H11 107.026 H12 C4 H13 107.154
H14 C5 H15 108.272 H14 C5 H16 108.272
H15 C5 H16 108.170
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.084      
2 C -0.161      
3 C -0.138      
4 C -0.136      
5 C -0.230      
6 O -0.171      
7 H 0.059      
8 H 0.083      
9 H 0.083      
10 H 0.078      
11 H 0.078      
12 H 0.071      
13 H 0.071      
14 H 0.076      
15 H 0.076      
16 H 0.076      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.625 -0.107 0.000 1.628
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.377 2.577 0.000
y 2.577 -34.461 0.000
z 0.000 0.000 -34.493
Traceless
 xyz
x -4.900 2.577 0.000
y 2.577 2.474 0.000
z 0.000 0.000 2.427
Polar
3z2-r24.853
x2-y2-4.916
xy2.577
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.737 -0.239 0.000
y -0.239 4.814 0.000
z 0.000 0.000 3.375


<r2> (average value of r2) Å2
<r2> 256.681
(<r2>)1/2 16.021