return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH3CH2CHO (Propanal)

using model chemistry: MP2=FULL/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 MP2=FULL/6-31G*
 hartrees
Energy at 0K-192.530917
Energy at 298.15K-192.537328
HF Energy-191.949646
Nuclear repulsion energy118.424627
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/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' 3215 3029 15.94      
2 A' 3125 2945 14.12      
3 A' 3088 2910 17.62      
4 A' 2984 2812 126.67      
5 A' 1793 1689 81.82      
6 A' 1563 1473 8.16      
7 A' 1523 1435 12.46      
8 A' 1480 1395 9.62      
9 A' 1453 1369 2.33      
10 A' 1417 1335 10.22      
11 A' 1153 1086 14.45      
12 A' 1038 978 0.96      
13 A' 896 845 18.57      
14 A' 685 646 5.59      
15 A' 271 255 8.91      
16 A" 3221 3035 15.20      
17 A" 3130 2949 8.25      
18 A" 1561 1471 6.72      
19 A" 1321 1245 0.29      
20 A" 1185 1116 0.25      
21 A" 926 873 2.20      
22 A" 701 660 3.58      
23 A" 244 230 0.21      
24 A" 141 133 2.15      

Unscaled Zero Point Vibrational Energy (zpe) 19057.2 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 17955.7 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=FULL/6-31G*
ABC
0.54993 0.19900 0.15441

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.441 0.441 0.000
C2 0.000 0.923 0.000
C3 -0.998 -0.204 0.000
O4 -0.698 -1.389 0.000
H5 2.132 1.287 0.000
H6 1.643 -0.172 0.880
H7 1.643 -0.172 -0.880
H8 -0.216 1.554 0.873
H9 -0.216 1.554 -0.873
H10 -2.065 0.103 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 H5 H6 H7 H8 H9 H10
C11.51952.52322.81541.09231.09151.09152.17862.17863.5222
C21.51951.50482.41482.16312.16142.16141.09851.09852.2213
C32.52321.50481.22313.46722.78392.78392.11232.11231.1098
O42.81542.41481.22313.89522.78112.78113.10733.10732.0239
H51.09232.16313.46723.89521.77311.77312.51922.51924.3606
H61.09152.16142.78392.78111.77311.76002.53663.08323.8205
H71.09152.16142.78392.78111.77311.76003.08322.53663.8205
H82.17861.09852.11233.10732.51922.53663.08321.74532.5066
H92.17861.09852.11233.10732.51923.08322.53661.74532.5066
H103.52222.22131.10982.02394.36063.82053.82052.50662.5066

picture of Propanal state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 113.086 C1 C2 H8 111.628
C1 C2 H9 111.628 C2 C1 H5 110.768
C2 C1 H6 110.679 C2 C1 H7 110.679
C2 C3 O4 124.232 C2 C3 H10 115.497
C3 C2 H8 107.434 C3 C2 H9 107.434
O4 C3 H10 120.271 H5 C1 H6 108.574
H5 C1 H7 108.574 H6 C1 H7 107.467
H8 C2 H9 105.194
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability