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All results from a given calculation for CH3CH2CHO (Propanal)

using model chemistry: MP2/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-192.668998
Energy at 298.15K-192.675377
HF Energy-191.972742
Nuclear repulsion energy118.718181
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 MP2/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3217 3039 10.92      
2 A' 3122 2949 11.58      
3 A' 3093 2921 13.84      
4 A' 2966 2802 113.40      
5 A' 1793 1693 88.89      
6 A' 1528 1443 7.06      
7 A' 1480 1398 12.21      
8 A' 1443 1363 11.51      
9 A' 1426 1347 1.77      
10 A' 1380 1303 8.80      
11 A' 1131 1068 13.59      
12 A' 1016 959 0.80      
13 A' 883 834 19.30      
14 A' 673 636 5.60      
15 A' 261 246 8.10      
16 A" 3220 3042 9.90      
17 A" 3138 2963 4.71      
18 A" 1524 1440 6.22      
19 A" 1296 1224 0.15      
20 A" 1158 1094 0.27      
21 A" 909 858 2.02      
22 A" 679 641 3.25      
23 A" 242 228 0.37      
24 A" 143 135 2.08      

Unscaled Zero Point Vibrational Energy (zpe) 18860.5 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 17813.7 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 MP2/6-31G(2df,p)
ABC
0.55138 0.20005 0.15511

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.446 0.435 0.000
C2 0.000 0.917 0.000
C3 -1.004 -0.202 0.000
O4 -0.701 -1.379 0.000
H5 2.139 1.276 0.000
H6 1.654 -0.176 0.876
H7 1.654 -0.176 -0.876
H8 -0.212 1.554 0.867
H9 -0.212 1.554 -0.867
H10 -2.069 0.099 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 H5 H6 H7 H8 H9 H10
C11.52422.53082.81031.09011.08841.08842.18012.18013.5305
C21.52421.50292.40062.16902.16782.16781.09611.09612.2244
C32.53081.50291.21563.47272.79852.79852.11162.11161.1067
O42.81032.40061.21563.88772.78572.78573.09693.09692.0139
H51.09012.16903.47273.88771.76421.76422.52142.52144.3692
H61.08842.16782.79852.78571.76421.75282.54493.08453.8343
H71.08842.16782.79852.78571.76421.75283.08452.54493.8343
H82.18011.09612.11163.09692.52142.54493.08451.73302.5125
H92.18011.09612.11163.09692.52143.08452.54491.73302.5125
H103.53052.22441.10672.01394.36923.83433.83432.51252.5125

picture of Propanal state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 113.446 C1 C2 H8 111.568
C1 C2 H9 111.568 C2 C1 H5 111.040
C2 C1 H6 111.042 C2 C1 H7 111.042
C2 C3 O4 123.686 C2 C3 H10 116.120
C3 C2 H8 107.644 C3 C2 H9 107.644
O4 C3 H10 120.194 H5 C1 H6 108.154
H5 C1 H7 108.154 H6 C1 H7 107.259
H8 C2 H9 104.472
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability