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All results from a given calculation for CH3CH2CHO (Propanal)

using model chemistry: QCISD(T)/cc-pVTZ

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)/cc-pVTZ
 hartrees
Energy at 0K-192.827869
Energy at 298.15K-192.834229
HF Energy-192.022862
Nuclear repulsion energy118.465805
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)/cc-pVTZ
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' 3130 2969        
2 A' 3053 2896        
3 A' 3026 2871        
4 A' 2914 2765        
5 A' 1784 1692        
6 A' 1507 1430        
7 A' 1461 1386        
8 A' 1427 1354        
9 A' 1411 1339        
10 A' 1371 1301        
11 A' 1120 1062        
12 A' 1005 953        
13 A' 865 821        
14 A' 668 634        
15 A' 256 243        
16 A" 3131 2970        
17 A" 3057 2900        
18 A" 1501 1424        
19 A" 1286 1220        
20 A" 1147 1088        
21 A" 901 855        
22 A" 676 641        
23 A" 240 228        
24 A" 139 132        

Unscaled Zero Point Vibrational Energy (zpe) 18539.1 cm-1
Scaled (by 0.9486) Zero Point Vibrational Energy (zpe) 17586.1 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)/cc-pVTZ
ABC
0.55421 0.19744 0.15378

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.448 0.449 0.000
C2 0.000 0.920 0.000
C3 -0.999 -0.212 0.000
O4 -0.703 -1.388 0.000
H5 2.131 1.300 0.000
H6 1.655 -0.163 0.879
H7 1.655 -0.163 -0.879
H8 -0.223 1.546 0.872
H9 -0.223 1.546 -0.872
H10 -2.063 0.097 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 H5 H6 H7 H8 H9 H10
C11.52322.53522.82901.09071.09051.09052.18162.18163.5290
C21.52321.50972.41262.16442.16402.16401.09651.09652.2209
C32.53521.50971.21273.47592.79582.79582.11032.11031.1079
O42.82902.41261.21273.90582.79852.79853.09853.09852.0137
H51.09072.16443.47593.90581.77171.77172.52242.52244.3628
H61.09052.16402.79582.79851.77171.75762.53943.08433.8289
H71.09052.16402.79582.79851.77171.75763.08432.53943.8289
H82.18161.09652.11033.09852.52242.53943.08431.74362.4988
H92.18161.09652.11033.09852.52243.08432.53941.74362.4988
H103.52902.22091.10792.01374.36283.82893.82892.49882.4988

picture of Propanal state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 113.417 C1 C2 H8 111.735
C1 C2 H9 111.735 C2 C1 H5 110.708
C2 C1 H6 110.688 C2 C1 H7 110.688
C2 C3 O4 124.442 C2 C3 H10 115.226
C3 C2 H8 107.072 C3 C2 H9 107.072
O4 C3 H10 120.332 H5 C1 H6 108.631
H5 C1 H7 108.631 H6 C1 H7 107.395
H8 C2 H9 105.330
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability