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All results from a given calculation for CH3CH2CHO (Propanal)

using model chemistry: QCISD/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/6-31G**
 hartrees
Energy at 0K-192.601024
Energy at 298.15K-192.607421
HF Energy-191.959988
Nuclear repulsion energy118.356686
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/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' 3204 3016 23.76      
2 A' 3122 2939 16.67      
3 A' 3091 2910 25.65      
4 A' 2993 2818 125.29      
5 A' 1828 1721 107.67      
6 A' 1557 1466 5.79      
7 A' 1520 1431 7.57      
8 A' 1478 1392 6.70      
9 A' 1455 1369 5.48      
10 A' 1420 1336 6.28      
11 A' 1148 1081 13.57      
12 A' 1031 970 1.09      
13 A' 887 835 16.83      
14 A' 680 640 7.74      
15 A' 267 252 8.83      
16 A" 3210 3022 24.03      
17 A" 3128 2944 13.32      
18 A" 1554 1463 4.36      
19 A" 1320 1242 0.40      
20 A" 1183 1113 0.09      
21 A" 923 869 1.77      
22 A" 699 658 1.65      
23 A" 241 227 0.30      
24 A" 135 127 2.69      

Unscaled Zero Point Vibrational Energy (zpe) 19035.8 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 17920.3 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/6-31G**
ABC
0.55159 0.19763 0.15369

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.447 0.446 0.000
C2 0.000 0.923 0.000
C3 -1.001 -0.209 0.000
O4 -0.701 -1.391 0.000
H5 2.131 1.295 0.000
H6 1.651 -0.164 0.879
H7 1.651 -0.164 -0.879
H8 -0.217 1.550 0.871
H9 -0.217 1.550 -0.871
H10 -2.063 0.101 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 H5 H6 H7 H8 H9 H10
C11.52332.53412.82651.08981.08931.08932.17882.17883.5266
C21.52331.51102.41732.16312.16322.16321.09561.09562.2204
C32.53411.51101.21883.47432.79422.79422.11402.11401.1062
O42.82652.41731.21883.90292.79472.79473.10513.10512.0195
H51.08982.16313.47433.90291.76941.76942.51762.51764.3602
H61.08932.16322.79422.79471.76941.75732.53573.08103.8256
H71.08932.16322.79422.79471.76941.75733.08102.53573.8256
H82.17881.09562.11403.10512.51762.53573.08101.74302.5031
H92.17881.09562.11403.10512.51763.08102.53571.74302.5031
H103.52662.22041.10622.01954.36023.82563.82562.50312.5031

picture of Propanal state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 113.266 C1 C2 H8 111.557
C1 C2 H9 111.557 C2 C1 H5 110.651
C2 C1 H6 110.693 C2 C1 H7 110.693
C2 C3 O4 124.279 C2 C3 H10 115.202
C3 C2 H8 107.315 C3 C2 H9 107.315
O4 C3 H10 120.519 H5 C1 H6 108.582
H5 C1 H7 108.582 H6 C1 H7 107.544
H8 C2 H9 105.393
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability