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All results from a given calculation for CH3CH2CHO (Propanal)

using model chemistry: MP2=FULL/3-21G

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=FULL/3-21G
 hartrees
Energy at 0K-191.282212
Energy at 298.15K-191.288634
HF Energy-190.874061
Nuclear repulsion energy117.295877
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=FULL/3-21G
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' 3178 3034 16.97      
2 A' 3104 2964 12.63      
3 A' 3079 2939 14.06      
4 A' 2964 2830 132.14      
5 A' 1643 1569 27.67      
6 A' 1599 1527 5.42      
7 A' 1556 1485 18.89      
8 A' 1503 1435 7.93      
9 A' 1459 1393 3.83      
10 A' 1391 1328 10.98      
11 A' 1132 1081 18.79      
12 A' 1026 980 2.27      
13 A' 848 810 18.46      
14 A' 688 657 2.59      
15 A' 276 263 9.28      
16 A" 3182 3038 18.77      
17 A" 3114 2973 6.48      
18 A" 1603 1530 6.48      
19 A" 1347 1286 0.34      
20 A" 1200 1146 0.75      
21 A" 950 907 1.54      
22 A" 728 695 5.62      
23 A" 239 228 0.45      
24 A" 132 126 1.29      

Unscaled Zero Point Vibrational Energy (zpe) 18970.0 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 18112.5 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=FULL/3-21G
ABC
0.52672 0.19882 0.15254

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.448 0.416 0.000
C2 0.000 0.952 0.000
C3 -1.012 -0.189 0.000
O4 -0.696 -1.399 0.000
H5 2.166 1.241 0.000
H6 1.619 -0.205 0.883
H7 1.619 -0.205 -0.883
H8 -0.191 1.579 0.882
H9 -0.191 1.579 -0.882
H10 -2.069 0.131 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 H5 H6 H7 H8 H9 H10
C11.54352.53252.80931.09381.09321.09322.19392.19393.5278
C21.54351.52432.45182.18562.17702.17701.09881.09882.2254
C32.53251.52431.25093.48462.77512.77512.13902.13901.1046
O42.80932.45181.25093.89412.75112.75113.14673.14672.0557
H51.09382.18563.48463.89411.78011.78012.53932.53934.3780
H61.09322.17702.77512.75111.78011.76642.54113.09393.8071
H71.09322.17702.77512.75111.78011.76643.09392.54113.8071
H82.19391.09882.13903.14672.53932.54113.09391.76382.5298
H92.19391.09882.13903.14672.53933.09392.54111.76382.5298
H103.52782.22541.10462.05574.37803.80713.80712.52982.5298

picture of Propanal state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 111.277 C1 C2 H8 111.145
C1 C2 H9 111.145 C2 C1 H5 110.787
C2 C1 H6 110.139 C2 C1 H7 110.139
C2 C3 O4 123.832 C2 C3 H10 114.731
C3 C2 H8 108.170 C3 C2 H9 108.170
O4 C3 H10 121.437 H5 C1 H6 108.965
H5 C1 H7 108.965 H6 C1 H7 107.780
H8 C2 H9 106.754
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability