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All results from a given calculation for CH3CH2CHO (Propanal)

using model chemistry: PBEPBE/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 PBEPBE/3-21G
 hartrees
Energy at 0K-191.838045
Energy at 298.15K-191.844312
HF Energy-191.838045
Nuclear repulsion energy117.322957
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/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' 3080 3052 14.79      
2 A' 3003 2976 13.27      
3 A' 2959 2932 17.65      
4 A' 2792 2767 157.31      
5 A' 1685 1669 69.40      
6 A' 1517 1503 9.16      
7 A' 1452 1439 23.83      
8 A' 1419 1406 15.42      
9 A' 1393 1380 4.05      
10 A' 1314 1302 13.37      
11 A' 1090 1080 18.50      
12 A' 999 990 0.64      
13 A' 836 829 23.92      
14 A' 666 660 1.37      
15 A' 260 258 9.76      
16 A" 3076 3048 16.19      
17 A" 2987 2960 4.92      
18 A" 1517 1503 9.94      
19 A" 1275 1263 0.14      
20 A" 1130 1119 1.15      
21 A" 905 897 2.42      
22 A" 674 668 9.05      
23 A" 235 233 0.15      
24 A" 108 107 0.73      

Unscaled Zero Point Vibrational Energy (zpe) 18185.7 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 18020.2 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/3-21G
ABC
0.53007 0.19839 0.15266

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.447 0.425 0.000
C2 0.000 0.944 0.000
C3 -1.005 -0.197 0.000
O4 -0.697 -1.399 0.000
H5 2.168 1.258 0.000
H6 1.624 -0.203 0.889
H7 1.624 -0.203 -0.889
H8 -0.209 1.580 0.886
H9 -0.209 1.580 -0.886
H10 -2.072 0.146 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 H5 H6 H7 H8 H9 H10
C11.53712.52922.81511.10221.10281.10282.20482.20483.5303
C21.53711.52062.44522.19082.17802.17801.11021.11022.2211
C32.52921.52061.24133.49082.77502.77502.13902.13901.1212
O42.81512.44521.24133.90812.75832.75833.14653.14652.0685
H51.10222.19083.49083.90811.79501.79502.55742.55744.3842
H61.10282.17802.77502.75831.79501.77762.55753.11293.8178
H71.10282.17802.77502.75831.79501.77763.11292.55753.8178
H82.20481.11022.13903.14652.55742.55753.11291.77142.5128
H92.20481.11022.13903.14652.55743.11292.55751.77142.5128
H103.53032.22111.12122.06854.38423.81783.81782.51282.5128

picture of Propanal state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 111.619 C1 C2 H8 111.772
C1 C2 H9 111.772 C2 C1 H5 111.143
C2 C1 H6 110.104 C2 C1 H7 110.104
C2 C3 O4 124.281 C2 C3 H10 113.577
C3 C2 H8 107.776 C3 C2 H9 107.776
O4 C3 H10 122.142 H5 C1 H6 108.994
H5 C1 H7 108.994 H6 C1 H7 107.414
H8 C2 H9 105.835
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.588      
2 C -0.534      
3 C 0.231      
4 O -0.382      
5 H 0.203      
6 H 0.221      
7 H 0.221      
8 H 0.234      
9 H 0.234      
10 H 0.161      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.044 2.317 0.000 2.317
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.150 -1.482 0.000
y -1.482 -27.760 0.000
z 0.000 0.000 -24.219
Traceless
 xyz
x 1.840 -1.482 0.000
y -1.482 -3.576 0.000
z 0.000 0.000 1.736
Polar
3z2-r23.472
x2-y23.611
xy-1.482
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.261 0.006 0.000
y 0.006 5.426 0.000
z 0.000 0.000 3.672


<r2> (average value of r2) Å2
<r2> 84.875
(<r2>)1/2 9.213