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

using model chemistry: HF/STO-3G

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 HF/STO-3G
 hartrees
Energy at 0K-224.771985
Energy at 298.15K-224.776630
Nuclear repulsion energy118.173478
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 HF/STO-3G
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' 4197 3427 0.89      
2 A' 3569 2914 13.38      
3 A' 3546 2895 2.58      
4 A' 2104 1718 23.52      
5 A' 1816 1483 0.17      
6 A' 1762 1439 32.20      
7 A' 1595 1302 4.97      
8 A' 1545 1262 44.77      
9 A' 1314 1073 8.56      
10 A' 1035 845 8.25      
11 A' 819 668 12.11      
12 A' 274 224 12.79      
13 A" 3647 2978 2.67      
14 A" 1419 1159 0.21      
15 A" 1224 999 2.27      
16 A" 862 704 0.00      
17 A" 342 279 73.60      
18 A" 120 98 12.27      

Unscaled Zero Point Vibrational Energy (zpe) 15594.7 cm-1
Scaled (by 0.8165) Zero Point Vibrational Energy (zpe) 12733.1 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 HF/STO-3G
ABC
0.59342 0.21568 0.16299

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.959 0.000
C2 0.954 -0.260 0.000
O3 -1.368 0.537 0.000
O4 0.507 -1.393 0.000
H5 -1.295 -0.453 0.000
H6 0.215 1.574 0.883
H7 0.215 1.574 -0.883
H8 2.034 -0.040 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C11.54731.43142.40531.91551.09751.09752.2654
C21.54732.45421.21772.25652.16532.16531.1022
O31.43142.45422.69000.99242.08802.08803.4499
O42.40531.21772.69002.03173.10903.10902.0400
H51.91552.25650.99242.03172.67702.67703.3538
H61.09752.16532.08803.10902.67701.76622.5870
H71.09752.16532.08803.10902.67701.76622.5870
H82.26541.10223.44992.04003.35382.58702.5870

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 120.429 C1 C2 H8 116.523
C1 O3 H5 102.922 C2 C1 O3 110.899
C2 C1 H6 108.723 C2 C1 H7 108.723
O3 C1 H6 110.616 O3 C1 H7 110.616
O4 C2 H8 123.047 H6 C1 H7 107.158
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.023      
2 C 0.136      
3 O -0.292      
4 O -0.214      
5 H 0.196      
6 H 0.067      
7 H 0.067      
8 H 0.062      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.814 0.580 0.000 1.905
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.686 2.961 0.000
y 2.961 -23.835 0.000
z 0.000 0.000 -20.926
Traceless
 xyz
x -0.306 2.961 0.000
y 2.961 -2.028 0.000
z 0.000 0.000 2.334
Polar
3z2-r24.669
x2-y21.148
xy2.961
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.172 0.378 0.000
y 0.378 2.872 0.000
z 0.000 0.000 1.151


<r2> (average value of r2) Å2
<r2> 72.883
(<r2>)1/2 8.537