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All results from a given calculation for CH3CH2CHO (Propanal)

using model chemistry: QCISD(T)/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD(T)/6-31G*
 hartrees
Energy at 0K-192.569317
Energy at 298.15K-192.575673
HF Energy-191.949127
Nuclear repulsion energy117.982362
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 QCISD(T)/6-31G*
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' 3144 3016        
2 A' 3067 2942        
3 A' 3030 2907        
4 A' 2930 2811        
5 A' 1796 1723        
6 A' 1542 1479        
7 A' 1508 1447        
8 A' 1463 1404        
9 A' 1437 1379        
10 A' 1402 1345        
11 A' 1136 1090        
12 A' 1023 982        
13 A' 880 844        
14 A' 676 648        
15 A' 267 256        
16 A" 3151 3022        
17 A" 3063 2939        
18 A" 1539 1476        
19 A" 1304 1250        
20 A" 1169 1121        
21 A" 911 874        
22 A" 693 665        
23 A" 235 225        
24 A" 134 128        

Unscaled Zero Point Vibrational Energy (zpe) 18749.9 cm-1
Scaled (by 0.9593) Zero Point Vibrational Energy (zpe) 17986.8 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 QCISD(T)/6-31G*
ABC
0.54643 0.19721 0.15314

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.449 0.443 0.000
C2 0.000 0.926 0.000
C3 -1.003 -0.207 0.000
O4 -0.702 -1.393 0.000
H5 2.141 1.295 0.000
H6 1.652 -0.173 0.884
H7 1.652 -0.173 -0.884
H8 -0.216 1.559 0.877
H9 -0.216 1.559 -0.877
H10 -2.074 0.100 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 H5 H6 H7 H8 H9 H10
C11.52722.53662.82721.09731.09641.09642.18812.18813.5394
C21.52721.51332.42232.17242.17192.17191.10321.10322.2324
C32.53661.51331.22323.48412.79842.79842.12332.12331.1139
O42.82722.42231.22323.91142.79422.79423.11753.11752.0274
H51.09732.17243.48413.91141.78151.78152.52902.52904.3808
H61.09642.17192.79842.79421.78151.76842.54763.09713.8388
H71.09642.17192.79842.79421.78151.76843.09712.54763.8388
H82.18811.10322.12333.11752.52902.54763.09711.75402.5200
H92.18811.10322.12333.11752.52903.09712.54761.75402.5200
H103.53942.23241.11392.02744.38083.83883.83882.52002.5200

picture of Propanal state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 113.080 C1 C2 H8 111.567
C1 C2 H9 111.567 C2 C1 H5 110.668
C2 C1 H6 110.685 C2 C1 H7 110.685
C2 C3 O4 124.210 C2 C3 H10 115.528
C3 C2 H8 107.453 C3 C2 H9 107.453
O4 C3 H10 120.262 H5 C1 H6 108.604
H5 C1 H7 108.604 H6 C1 H7 107.500
H8 C2 H9 105.298
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability