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All results from a given calculation for CHOCH2OH (hydroxy acetaldehyde)

using model chemistry: mPW1PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS H in 1A'
Energy calculated at mPW1PW91/3-21G
 hartrees
Energy at 0K-227.703152
Energy at 298.15K-227.708215
Nuclear repulsion energy118.909226
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 mPW1PW91/3-21G
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' 3403 3249 35.71      
2 A' 3040 2902 82.25      
3 A' 3010 2873 10.45      
4 A' 1740 1661 63.63      
5 A' 1544 1474 13.07      
6 A' 1481 1414 119.78      
7 A' 1421 1356 14.06      
8 A' 1317 1257 55.60      
9 A' 1087 1038 45.61      
10 A' 863 823 47.43      
11 A' 772 737 7.45      
12 A' 307 294 27.09      
13 A" 3033 2895 25.73      
14 A" 1251 1194 9.28      
15 A" 1127 1075 0.01      
16 A" 783 747 0.45      
17 A" 498 476 107.03      
18 A" 225 215 4.97      

Unscaled Zero Point Vibrational Energy (zpe) 13451.3 cm-1
Scaled (by 0.9546) Zero Point Vibrational Energy (zpe) 12840.6 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 mPW1PW91/3-21G
ABC
0.58269 0.22529 0.16756

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.956 0.000
C2 0.941 -0.225 0.000
O3 -1.354 0.496 0.000
O4 0.498 -1.375 0.000
H5 -1.272 -0.501 0.000
H6 0.227 1.572 0.884
H7 0.227 1.572 -0.884
H8 2.017 -0.001 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C11.51001.42992.38351.93381.10161.10162.2320
C21.51002.40591.23232.22982.12652.12651.0985
O31.42992.40592.63301.00082.10702.10703.4070
O42.38351.23232.63301.97383.08893.08892.0477
H51.93382.22981.00081.97382.70672.70673.3259
H61.10162.12652.10703.08892.70671.76892.5415
H71.10162.12652.10703.08892.70671.76892.5415
H82.23201.09853.40702.04773.32592.54152.5415

picture of hydroxy acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O4 120.384 C1 C2 H8 116.782
C1 O3 H5 104.016 C2 C1 O3 109.808
C2 C1 H6 108.002 C2 C1 H7 108.002
O3 C1 H6 112.021 O3 C1 H7 112.021
O4 C2 H8 122.834 H6 C1 H7 106.804
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.240      
2 C 0.194      
3 O -0.582      
4 O -0.424      
5 H 0.362      
6 H 0.239      
7 H 0.239      
8 H 0.212      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.411 1.167 0.000 2.678
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.466 4.161 0.000
y 4.161 -25.598 0.000
z 0.000 0.000 -22.853
Traceless
 xyz
x -0.241 4.161 0.000
y 4.161 -1.938 0.000
z 0.000 0.000 2.179
Polar
3z2-r24.357
x2-y21.132
xy4.161
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.007 0.305 0.000
y 0.305 4.507 0.000
z 0.000 0.000 2.312


<r2> (average value of r2) Å2
<r2> 72.575
(<r2>)1/2 8.519