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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-192.297127
Energy at 298.15K-192.303484
HF Energy-191.858464
Nuclear repulsion energy116.579206
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' 3096 2984 25.98      
2 A' 3024 2914 16.42      
3 A' 2994 2885 37.95      
4 A' 2950 2842 96.90      
5 A' 1677 1616 66.50      
6 A' 1550 1493 8.21      
7 A' 1525 1469 13.11      
8 A' 1477 1424 5.98      
9 A' 1438 1385 6.63      
10 A' 1396 1345 7.70      
11 A' 1129 1088 15.80      
12 A' 1038 1000 1.82      
13 A' 862 831 15.62      
14 A' 673 649 6.64      
15 A' 268 259 9.57      
16 A" 3104 2991 28.17      
17 A" 3022 2912 14.02      
18 A" 1548 1491 5.78      
19 A" 1311 1264 0.52      
20 A" 1179 1136 0.61      
21 A" 921 887 1.54      
22 A" 718 692 3.50      
23 A" 224 216 0.37      
24 A" 128 124 3.26      

Unscaled Zero Point Vibrational Energy (zpe) 18625.6 cm-1
Scaled (by 0.9636) Zero Point Vibrational Energy (zpe) 17947.6 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 QCISD/6-31G
ABC
0.53360 0.19235 0.14930

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 1.466 0.448 0.000
C2 0.000 0.936 0.000
C3 -1.017 -0.200 0.000
O4 -0.713 -1.416 0.000
H5 2.157 1.307 0.000
H6 1.673 -0.169 0.888
H7 1.673 -0.169 -0.888
H8 -0.205 1.572 0.883
H9 -0.205 1.572 -0.883
H10 -2.085 0.104 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 H5 H6 H7 H8 H9 H10
C11.54532.56652.86761.10211.10131.10132.19962.19963.5675
C21.54531.52432.45702.18912.19292.19291.10761.10762.2442
C32.56651.52431.25333.51372.83322.83322.13952.13951.1100
O42.86762.45701.25333.95602.83512.83513.15663.15662.0471
H51.10212.18913.51373.95601.78911.78912.53642.53644.4091
H61.10132.19292.83322.83511.78911.77702.56143.11423.8709
H71.10132.19292.83322.83511.78911.77703.11422.56143.8709
H82.19961.10762.13953.15662.53642.56143.11421.76562.5426
H92.19961.10762.13953.15662.53643.11422.56141.76562.5426
H103.56752.24421.11002.04714.40913.87093.87092.54262.5426

picture of Propanal state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 113.456 C1 C2 H8 110.940
C1 C2 H9 110.940 C2 C1 H5 110.439
C2 C1 H6 110.790 C2 C1 H7 110.790
C2 C3 O4 124.117 C2 C3 H10 115.957
C3 C2 H8 107.715 C3 C2 H9 107.715
O4 C3 H10 119.926 H5 C1 H6 108.582
H5 C1 H7 108.582 H6 C1 H7 107.567
H8 C2 H9 105.704
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability