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

using model chemistry: B3PW91/6-31G(2df,p)

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 B3PW91/6-31G(2df,p)
 hartrees
Energy at 0K-228.972179
Energy at 298.15K-228.977166
Nuclear repulsion energy120.085783
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 B3PW91/6-31G(2df,p)
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' 3712 3569 65.33      
2 A' 2974 2859 65.83      
3 A' 2939 2826 57.50      
4 A' 1828 1757 131.99      
5 A' 1478 1421 31.13      
6 A' 1446 1390 53.44      
7 A' 1392 1338 27.97      
8 A' 1310 1260 39.69      
9 A' 1155 1111 83.25      
10 A' 878 844 44.70      
11 A' 772 743 8.38      
12 A' 298 286 24.41      
13 A" 2989 2873 25.24      
14 A" 1244 1196 2.03      
15 A" 1107 1065 0.11      
16 A" 717 689 0.10      
17 A" 442 425 75.48      
18 A" 227 218 1.98      

Unscaled Zero Point Vibrational Energy (zpe) 13453.2 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 12933.9 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 B3PW91/6-31G(2df,p)
ABC
0.61692 0.22233 0.16854

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.932 0.000
C2 0.923 -0.256 0.000
O3 -1.334 0.547 0.000
O4 0.492 -1.383 0.000
H5 -1.314 -0.422 0.000
H6 0.252 1.550 0.880
H7 0.252 1.550 -0.880
H8 2.012 -0.045 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C11.50471.38872.36751.88741.10481.10482.2365
C21.50472.39561.20652.24302.11862.11861.1097
O31.38872.39562.65760.96972.07322.07323.3980
O42.36751.20652.65762.04623.07243.07242.0254
H51.88742.24300.96972.04622.66842.66843.3475
H61.10482.11862.07323.07242.66841.76082.5328
H71.10482.11862.07323.07242.66841.76082.5328
H82.23651.10973.39802.02543.34752.53282.5328

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 121.282 C1 C2 H8 116.816
C1 O3 H5 104.924 C2 C1 O3 111.714
C2 C1 H6 107.570 C2 C1 H7 107.570
O3 C1 H6 111.993 O3 C1 H7 111.993
O4 C2 H8 121.902 H6 C1 H7 105.666
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.147      
2 C 0.133      
3 O -0.439      
4 O -0.270      
5 H 0.315      
6 H 0.143      
7 H 0.143      
8 H 0.120      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.854 1.269 0.000 2.247
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.533 3.584 0.000
y 3.584 -25.413 0.000
z 0.000 0.000 -22.621
Traceless
 xyz
x 0.484 3.584 0.000
y 3.584 -2.336 0.000
z 0.000 0.000 1.851
Polar
3z2-r23.703
x2-y21.880
xy3.584
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.681 0.142 0.000
y 0.142 5.031 0.000
z 0.000 0.000 3.157


<r2> (average value of r2) Å2
<r2> 71.943
(<r2>)1/2 8.482