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All results from a given calculation for CH3CH2CHO (Propanal)

using model chemistry: B3PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/3-21G
 hartrees
Energy at 0K-192.011484
Energy at 298.15K-192.017855
HF Energy-192.011484
Nuclear repulsion energy118.072340
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 B3PW91/3-21G
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' 3151 3029 14.99      
2 A' 3076 2956 13.20      
3 A' 3038 2921 17.93      
4 A' 2911 2798 137.13      
5 A' 1752 1684 77.03      
6 A' 1558 1497 9.76      
7 A' 1497 1439 24.18      
8 A' 1465 1408 16.39      
9 A' 1440 1384 4.76      
10 A' 1364 1311 13.99      
11 A' 1124 1080 21.06      
12 A' 1028 988 0.79      
13 A' 858 825 22.25      
14 A' 687 660 2.58      
15 A' 267 257 10.45      
16 A" 3151 3029 15.83      
17 A" 3068 2949 4.76      
18 A" 1558 1498 10.23      
19 A" 1316 1265 0.16      
20 A" 1170 1124 1.06      
21 A" 938 902 2.50      
22 A" 699 672 9.37      
23 A" 238 229 0.40      
24 A" 122 117 1.14      

Unscaled Zero Point Vibrational Energy (zpe) 18737.6 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 18010.6 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 B3PW91/3-21G
ABC
0.53881 0.20004 0.15424

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.442 0.424 0.000
C2 0.000 0.937 0.000
C3 -1.000 -0.197 0.000
O4 -0.698 -1.389 0.000
H5 2.155 1.254 0.000
H6 1.622 -0.198 0.883
H7 1.622 -0.198 -0.883
H8 -0.205 1.567 0.880
H9 -0.205 1.567 -0.880
H10 -2.057 0.136 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 H5 H6 H7 H8 H9 H10
C11.53042.51912.80461.09461.09481.09482.18942.18943.5110
C21.53041.51162.42882.17792.16792.16791.10161.10162.2078
C32.51911.51161.23013.47222.76692.76692.12562.12561.1090
O42.80462.42881.23013.88932.75382.75383.12403.12402.0435
H51.09462.17793.47223.88931.78091.78092.53762.53764.3580
H61.09482.16792.76692.75381.78091.76572.54083.09233.7991
H71.09482.16792.76692.75381.78091.76573.09232.54083.7991
H82.18941.10162.12563.12402.53762.54083.09231.75962.5008
H92.18941.10162.12563.12402.53763.09232.54081.75962.5008
H103.51102.20781.10902.04354.35803.79913.79912.50082.5008

picture of Propanal state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 111.808 C1 C2 H8 111.540
C1 C2 H9 111.540 C2 C1 H5 111.044
C2 C1 H6 110.241 C2 C1 H7 110.241
C2 C3 O4 124.397 C2 C3 H10 113.919
C3 C2 H8 107.832 C3 C2 H9 107.832
O4 C3 H10 121.684 H5 C1 H6 108.864
H5 C1 H7 108.864 H6 C1 H7 107.501
H8 C2 H9 106.010
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.608      
2 C -0.564      
3 C 0.256      
4 O -0.418      
5 H 0.211      
6 H 0.229      
7 H 0.229      
8 H 0.244      
9 H 0.244      
10 H 0.177      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.109 2.480 0.000 2.482
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.850 -1.593 0.000
y -1.593 -27.990 0.000
z 0.000 0.000 -24.116
Traceless
 xyz
x 2.203 -1.593 0.000
y -1.593 -4.008 0.000
z 0.000 0.000 1.804
Polar
3z2-r23.609
x2-y24.141
xy-1.593
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.034 -0.031 0.000
y -0.031 5.269 0.000
z 0.000 0.000 3.608


<r2> (average value of r2) Å2
<r2> 84.114
(<r2>)1/2 9.171