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All results from a given calculation for C5H6O (Pentadienal)

using model chemistry: PBE1PBE/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBE1PBE/3-21G*
 hartrees
Energy at 0K-267.509602
Energy at 298.15K-267.515241
HF Energy-267.509602
Nuclear repulsion energy193.497792
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 PBE1PBE/3-21G*
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' 3271 3139 6.01      
2 A' 3221 3091 3.60      
3 A' 3192 3064 5.10      
4 A' 3177 3050 3.36      
5 A' 3152 3025 4.13      
6 A' 2908 2791 109.77      
7 A' 1740 1670 180.65      
8 A' 1716 1647 84.44      
9 A' 1675 1607 10.49      
10 A' 1500 1440 6.39      
11 A' 1446 1388 1.12      
12 A' 1369 1314 1.50      
13 A' 1351 1297 2.20      
14 A' 1302 1250 4.70      
15 A' 1213 1165 10.24      
16 A' 1122 1077 110.57      
17 A' 994 954 7.31      
18 A' 612 587 14.32      
19 A' 444 426 0.55      
20 A' 391 375 4.75      
21 A' 153 147 4.44      
22 A" 1075 1032 36.83      
23 A" 1058 1015 26.29      
24 A" 1015 975 47.27      
25 A" 985 945 24.84      
26 A" 914 877 13.96      
27 A" 666 639 4.02      
28 A" 292 281 8.40      
29 A" 222 213 0.77      
30 A" 104 100 1.52      

Unscaled Zero Point Vibrational Energy (zpe) 21138.6 cm-1
Scaled (by 0.9598) Zero Point Vibrational Energy (zpe) 20288.9 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 PBE1PBE/3-21G*
ABC
0.95973 0.04472 0.04273

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.082 -1.586 0.000
O2 -1.082 -2.819 0.000
C3 0.113 -0.744 0.000
C4 0.000 0.597 0.000
C5 1.117 1.520 0.000
C6 0.967 2.851 0.000
H7 -2.023 -0.997 0.000
H8 1.079 -1.241 0.000
H9 -0.998 1.039 0.000
H10 2.113 1.083 0.000
H11 -0.020 3.309 0.000
H12 1.818 3.523 0.000

Atom - Atom Distances (Å)
  C1 O2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.23291.46242.43613.80574.88751.11052.18832.62614.16355.00905.8748
O21.23292.39523.58304.86476.02922.05052.67613.85855.04376.21946.9737
C31.46242.39521.34512.47633.69482.15171.08602.10072.70864.05484.5945
C42.43613.58301.34511.44922.45322.57562.13091.09192.16862.71243.4452
C53.80574.86472.47631.44921.33954.02462.76142.16931.08822.11912.1219
C64.88756.02923.69482.45321.33954.87344.09382.67342.10741.08711.0847
H71.11052.05052.15172.57564.02464.87343.11182.27924.63024.74955.9320
H82.18832.67611.08602.13092.76144.09383.11183.08412.54394.68064.8207
H92.62613.85852.10071.09192.16932.67342.27923.08413.11202.47243.7558
H104.16355.04372.70862.16861.08822.10744.63022.54393.11203.08272.4573
H115.00906.21944.05482.71242.11911.08714.74954.68062.47243.08271.8504
H125.87486.97374.59453.44522.12191.08475.93204.82073.75582.45731.8504

picture of Pentadienal state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C4 120.336 C1 C3 H8 117.577
O2 C1 C3 125.196 O2 C1 H7 122.010
C3 C1 H7 112.794 C3 C4 C5 124.754
C3 C4 H9 118.717 C4 C3 H8 122.087
C4 C5 C6 123.157 C4 C5 H10 116.727
C5 C4 H9 116.529 C5 C6 H11 121.330
C5 C6 H12 121.808 C6 C5 H10 120.117
H11 C6 H12 116.863
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.238      
2 O -0.448      
3 C -0.301      
4 C -0.198      
5 C -0.228      
6 C -0.407      
7 H 0.176      
8 H 0.243      
9 H 0.233      
10 H 0.235      
11 H 0.225      
12 H 0.232      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.979 3.773 0.000 3.898
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.325 -3.095 0.000
y -3.095 -41.473 0.000
z 0.000 0.000 -38.394
Traceless
 xyz
x 7.608 -3.095 0.000
y -3.095 -6.113 0.000
z 0.000 0.000 -1.495
Polar
3z2-r2-2.990
x2-y29.148
xy-3.095
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.390 2.574 0.000
y 2.574 16.139 0.000
z 0.000 0.000 2.305


<r2> (average value of r2) Å2
<r2> 241.862
(<r2>)1/2 15.552