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

using model chemistry: PBEPBE/6-31G*

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 PBEPBE/6-31G*
 hartrees
Energy at 0K-228.775795
Energy at 298.15K-228.780694
Nuclear repulsion energy119.039881
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 PBEPBE/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' 3457 3408 54.57      
2 A' 2901 2859 82.86      
3 A' 2874 2833 53.31      
4 A' 1752 1727 120.14      
5 A' 1461 1440 37.17      
6 A' 1424 1403 72.80      
7 A' 1358 1338 23.28      
8 A' 1278 1259 34.24      
9 A' 1118 1102 75.57      
10 A' 859 846 46.49      
11 A' 752 742 4.75      
12 A' 298 294 24.01      
13 A" 2906 2865 30.55      
14 A" 1201 1184 4.71      
15 A" 1067 1052 0.10      
16 A" 692 682 0.14      
17 A" 444 438 78.77      
18 A" 209 206 4.32      

Unscaled Zero Point Vibrational Energy (zpe) 13024.8 cm-1
Scaled (by 0.9857) Zero Point Vibrational Energy (zpe) 12838.5 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 PBEPBE/6-31G*
ABC
0.60251 0.22015 0.16628

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.940 0.000
C2 0.932 -0.251 0.000
O3 -1.344 0.546 0.000
O4 0.491 -1.394 0.000
H5 -1.303 -0.443 0.000
H6 0.253 1.566 0.887
H7 0.253 1.566 -0.887
H8 2.032 -0.043 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C11.51231.40082.38461.89981.11511.11512.2568
C21.51232.41191.22502.24332.13352.13351.1187
O31.40082.41192.67010.98962.09242.09243.4267
O42.38461.22502.67012.03013.09933.09932.0488
H51.89982.24330.98962.03012.69132.69133.3582
H61.11512.13352.09243.09932.69131.77452.5578
H71.11512.13352.09243.09932.69131.77452.5578
H82.25681.11873.42672.04883.35822.55782.5578

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 120.823 C1 C2 H8 117.351
C1 O3 H5 103.938 C2 C1 O3 111.721
C2 C1 H6 107.625 C2 C1 H7 107.625
O3 C1 H6 112.044 O3 C1 H7 112.044
O4 C2 H8 121.827 H6 C1 H7 105.437
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.118      
2 C 0.184      
3 O -0.582      
4 O -0.358      
5 H 0.398      
6 H 0.172      
7 H 0.172      
8 H 0.134      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.899 1.170 0.000 2.230
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.016 3.738 0.000
y 3.738 -25.535 0.000
z 0.000 0.000 -22.948
Traceless
 xyz
x 0.226 3.738 0.000
y 3.738 -2.053 0.000
z 0.000 0.000 1.828
Polar
3z2-r23.655
x2-y21.519
xy3.738
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.771 0.154 0.000
y 0.154 5.124 0.000
z 0.000 0.000 2.864


<r2> (average value of r2) Å2
<r2> 72.924
(<r2>)1/2 8.540