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: B3PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at B3PW91/6-311G*
 hartrees
Energy at 0K-271.731471
Energy at 298.15K-271.742221
Nuclear repulsion energy231.031568
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 B3PW91/6-311G*
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' 3107 2991 43.68      
2 A' 3048 2935 37.63      
3 A' 3034 2920 25.98      
4 A' 3019 2906 35.56      
5 A' 3008 2896 20.24      
6 A' 2871 2764 179.89      
7 A' 1835 1766 161.43      
8 A' 1519 1463 11.32      
9 A' 1504 1448 1.82      
10 A' 1495 1439 0.94      
11 A' 1458 1404 17.61      
12 A' 1424 1371 14.28      
13 A' 1421 1368 2.97      
14 A' 1414 1361 6.13      
15 A' 1374 1323 14.60      
16 A' 1285 1237 7.27      
17 A' 1142 1100 11.87      
18 A' 1083 1043 0.43      
19 A' 1050 1011 1.45      
20 A' 926 891 0.52      
21 A' 898 865 14.16      
22 A' 697 671 13.25      
23 A' 395 381 1.92      
24 A' 290 279 4.21      
25 A' 136 131 5.18      
26 A" 3104 2988 78.60      
27 A" 3087 2972 18.17      
28 A" 3045 2932 7.63      
29 A" 3031 2918 10.65      
30 A" 1511 1454 9.95      
31 A" 1343 1293 0.19      
32 A" 1322 1272 0.10      
33 A" 1242 1195 0.01      
34 A" 1160 1117 0.16      
35 A" 984 947 0.91      
36 A" 858 826 0.17      
37 A" 743 715 2.38      
38 A" 665 640 4.40      
39 A" 236 227 0.00      
40 A" 185 178 1.22      
41 A" 111 107 1.03      
42 A" 65 63 1.94      

Unscaled Zero Point Vibrational Energy (zpe) 31061.5 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 29902.9 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 B3PW91/6-311G*
ABC
0.34936 0.04869 0.04411

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.833 -2.056 0.000
C2 -0.351 -1.127 0.000
C3 0.000 0.353 0.000
C4 -1.229 1.258 0.000
C5 -0.874 2.741 0.000
O6 1.985 -1.709 0.000
H7 0.576 -3.141 0.000
H8 -0.972 -1.395 0.869
H9 -0.972 -1.395 -0.869
H10 0.627 0.573 -0.872
H11 0.627 0.573 0.872
H12 -1.851 1.031 0.876
H13 -1.851 1.031 -0.876
H14 -1.770 3.369 0.000
H15 -0.284 3.009 -0.882
H16 -0.284 3.009 0.882

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 O6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
C11.50482.54883.90335.09171.20331.11502.10902.10902.77752.77754.18304.18306.01695.26125.2612
C21.50481.52102.54193.90332.40752.21691.10071.10072.14622.14622.77002.77004.71444.22984.2298
C32.54881.52101.52652.54322.86233.54092.18022.18021.09591.09592.15692.15693.49692.81332.8133
C43.90332.54191.52651.52454.37454.75512.80372.80372.16162.16161.09791.09792.17862.17642.1764
C55.09173.90332.54321.52455.28976.05814.22734.22732.77712.77712.15542.15541.09381.09481.0948
O61.20332.40752.86234.37455.28972.00893.09773.09772.79542.79544.79474.79476.31565.30935.3093
H71.11502.21693.54094.75516.05812.00892.48962.48963.81533.81534.90504.90506.91956.27226.2722
H82.10901.10072.18022.80374.22733.09772.48961.73733.07522.53542.58023.11444.90764.78904.4575
H92.10901.10072.18022.80374.22733.09772.48961.73732.53543.07523.11442.58024.90764.45754.7890
H102.77752.14621.09592.16162.77712.79543.81533.07522.53541.74303.06612.51963.78412.60063.1366
H112.77752.14621.09592.16162.77712.79543.81532.53543.07521.74302.51963.06613.78413.13662.6006
H124.18302.77002.15691.09792.15544.79474.90502.58023.11443.06612.51961.75122.49783.07562.5239
H134.18302.77002.15691.09792.15544.79474.90503.11442.58022.51963.06611.75122.49782.52393.0756
H146.01694.71443.49692.17861.09386.31566.91954.90764.90763.78413.78412.49782.49781.76531.7653
H155.26124.22982.81332.17641.09485.30936.27224.78904.45752.60063.13663.07562.52391.76531.7641
H165.26124.22982.81332.17641.09485.30936.27224.45754.78903.13662.60062.52393.07561.76531.7641

picture of Pentanal state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 114.781 C1 C2 H8 107.062
C1 C2 H9 107.062 C2 C1 O6 125.131
C2 C1 H7 114.793 C2 C3 C4 113.045
C2 C3 H10 109.123 C2 C3 H11 109.123
C3 C2 H8 111.524 C3 C2 H9 111.524
C3 C4 C5 112.933 C3 C4 H12 109.459
C3 C4 H13 109.459 C4 C3 H10 109.949
C4 C3 H11 109.949 C4 C5 H14 111.565
C4 C5 H15 111.325 C4 C5 H16 111.325
C5 C4 H12 109.476 C5 C4 H13 109.476
O6 C1 H7 120.076 H8 C2 H9 104.218
H10 C3 H11 105.360 H12 C4 H13 105.789
H14 C5 H15 107.528 H14 C5 H16 107.528
H15 C5 H16 107.353
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.134      
2 C -0.529      
3 C -0.430      
4 C -0.430      
5 C -0.649      
6 O -0.287      
7 H 0.163      
8 H 0.240      
9 H 0.240      
10 H 0.230      
11 H 0.230      
12 H 0.213      
13 H 0.213      
14 H 0.222      
15 H 0.220      
16 H 0.220      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.600 -0.109 0.000 2.602
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -44.952 3.963 0.000
y 3.963 -36.996 0.000
z 0.000 0.000 -37.223
Traceless
 xyz
x -7.842 3.963 0.000
y 3.963 4.092 0.000
z 0.000 0.000 3.751
Polar
3z2-r27.501
x2-y2-7.956
xy3.963
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.040 -0.404 0.000
y -0.404 10.091 0.000
z 0.000 0.000 7.043


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000