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 CH2CHCHO (Acrolein)

using model chemistry: MP4/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS trans 1A'
Energy calculated at MP4/STO-3G
 hartrees
Energy at 0K-188.596250
Energy at 298.15K 
HF Energy-188.292942
Nuclear repulsion energy99.575429
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 MP4/STO-3G
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' 3525 3525        
2 A' 3436 3436        
3 A' 3378 3378        
4 A' 3181 3181        
5 A' 1775 1775        
6 A' 1715 1715        
7 A' 1549 1549        
8 A' 1448 1448        
9 A' 1383 1383        
10 A' 1198 1198        
11 A' 955 955        
12 A' 551 551        
13 A' 312 312        
14 A" 1089 1089        
15 A" 967 967        
16 A" 941 941        
17 A" 599 599        
18 A" 145 145        

Unscaled Zero Point Vibrational Energy (zpe) 14072.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14072.4 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 MP4/STO-3G
ABC
1.53308 0.14364 0.13133

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.129 -0.782 0.000
C2 0.000 0.749 0.000
C3 1.208 1.368 0.000
O4 -1.233 -1.411 0.000
H5 0.872 -1.312 0.000
H6 -0.944 1.329 0.000
H7 1.309 2.469 0.000
H8 2.149 0.787 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 H5 H6 H7 H8
C11.53622.53171.27131.13262.26253.55402.7660
C21.53621.35762.48742.23811.10772.16112.1497
C32.53171.35763.69932.70132.15251.10481.1061
O41.27132.48743.69932.10772.75504.63844.0341
H51.13262.23812.70132.10773.20503.80572.4573
H62.26251.10772.15252.75503.20502.52503.1404
H73.55402.16111.10484.63843.80572.52501.8794
H82.76602.14971.10614.03412.45733.14041.8794

picture of Acrolein state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 121.933 C1 C2 H6 116.753
C2 C1 O4 124.470 C2 C1 H5 113.122
C2 C3 H7 122.382 C2 C3 H8 121.178
C3 C2 H6 121.314 O4 C1 H5 122.407
H7 C3 H8 116.439
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability