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All results from a given calculation for CH3CH2CHO (Propanal)

using model chemistry: MP2/CEP-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/CEP-31G
 hartrees
Energy at 0K-35.902073
Energy at 298.15K-35.908362
HF Energy-35.545198
Nuclear repulsion energy64.831913
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/CEP-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' 3147 3041 48.59      
2 A' 3047 2944 18.86      
3 A' 3033 2930 76.57      
4 A' 2986 2886 128.52      
5 A' 1587 1533 52.15      
6 A' 1528 1477 6.14      
7 A' 1497 1446 17.88      
8 A' 1459 1410 7.54      
9 A' 1405 1358 3.68      
10 A' 1380 1333 6.13      
11 A' 1122 1084 13.27      
12 A' 1026 992 1.23      
13 A' 856 827 14.62      
14 A' 651 629 6.18      
15 A' 251 243 8.99      
16 A" 3156 3050 57.01      
17 A" 3087 2983 25.78      
18 A" 1522 1471 6.85      
19 A" 1292 1248 0.92      
20 A" 1155 1116 2.49      
21 A" 897 867 0.98      
22 A" 698 675 7.62      
23 A" 220 213 0.44      
24 A" 131 127 4.92      

Unscaled Zero Point Vibrational Energy (zpe) 18566.3 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 17940.6 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 MP2/CEP-31G
ABC
0.51871 0.18618 0.14457

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.488 0.461 0.000
C2 0.000 0.953 0.000
C3 -1.031 -0.202 0.000
O4 -0.722 -1.445 0.000
H5 2.176 1.334 0.000
H6 1.696 -0.160 0.895
H7 1.696 -0.160 -0.895
H8 -0.212 1.588 0.892
H9 -0.212 1.588 -0.892
H10 -2.110 0.096 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 H5 H6 H7 H8 H9 H10
C11.56692.60462.91801.11081.10931.10932.22552.22553.6163
C21.56691.54872.50442.20852.21762.21761.11511.11512.2777
C32.60461.54871.28043.55542.87092.87092.16142.16141.1196
O42.91802.50441.28044.01422.88112.88113.20193.20192.0740
H51.11082.20853.55544.01421.80571.80572.56122.56124.4608
H61.10932.21762.87092.88111.80571.79032.58733.14473.9188
H71.10932.21762.87092.88111.80571.79033.14472.58733.9188
H82.22551.11512.16143.20192.56122.58733.14471.78452.5740
H92.22551.11512.16143.20192.56123.14472.58731.78452.5740
H103.61632.27771.11962.07404.46083.91883.91882.57402.5740

picture of Propanal state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 113.441 C1 C2 H8 111.033
C1 C2 H9 111.033 C2 C1 H5 109.966
C2 C1 H6 110.760 C2 C1 H7 110.760
C2 C3 O4 124.284 C2 C3 H10 116.290
C3 C2 H8 107.344 C3 C2 H9 107.344
O4 C3 H10 119.426 H5 C1 H6 108.843
H5 C1 H7 108.843 H6 C1 H7 107.601
H8 C2 H9 106.291
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability