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

using model chemistry: mPW1PW91/6-31G*

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 mPW1PW91/6-31G*
 hartrees
Energy at 0K-228.975591
Energy at 298.15K-228.980532
Nuclear repulsion energy120.034939
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 mPW1PW91/6-31G*
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' 3688 3498 64.59      
2 A' 3021 2865 92.16      
3 A' 3000 2845 29.92      
4 A' 1852 1756 134.80      
5 A' 1517 1439 20.39      
6 A' 1478 1402 77.02      
7 A' 1417 1344 24.90      
8 A' 1331 1262 45.42      
9 A' 1172 1112 85.02      
10 A' 893 847 45.95      
11 A' 778 737 9.22      
12 A' 306 290 24.35      
13 A" 3035 2878 29.66      
14 A" 1260 1195 3.22      
15 A" 1123 1065 0.06      
16 A" 734 696 0.18      
17 A" 422 400 96.25      
18 A" 198 188 6.45      

Unscaled Zero Point Vibrational Energy (zpe) 13611.7 cm-1
Scaled (by 0.9483) Zero Point Vibrational Energy (zpe) 12908.0 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 mPW1PW91/6-31G*
ABC
0.61504 0.22273 0.16863

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.934 0.000
C2 0.924 -0.253 0.000
O3 -1.334 0.543 0.000
O4 0.493 -1.383 0.000
H5 -1.317 -0.430 0.000
H6 0.243 1.552 0.881
H7 0.243 1.552 -0.881
H8 2.012 -0.047 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C11.50431.38972.36871.89651.10281.10282.2381
C21.50432.39401.20992.24862.12032.12031.1064
O31.38972.39402.65390.97352.06872.06873.3967
O42.36871.20992.65392.04503.07403.07402.0228
H51.89652.24860.97352.04502.67202.67203.3508
H61.10282.12032.06873.07402.67201.76112.5414
H71.10282.12032.06873.07402.67201.76112.5414
H82.23811.10643.39672.02283.35082.54142.5414

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 121.167 C1 C2 H8 117.206
C1 O3 H5 105.383 C2 C1 O3 111.572
C2 C1 H6 107.840 C2 C1 H7 107.840
O3 C1 H6 111.675 O3 C1 H7 111.675
O4 C2 H8 121.627 H6 C1 H7 105.964
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.125      
2 C 0.208      
3 O -0.636      
4 O -0.400      
5 H 0.428      
6 H 0.186      
7 H 0.186      
8 H 0.155      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.045 1.261 0.000 2.403
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.779 3.973 0.000
y 3.973 -25.663 0.000
z 0.000 0.000 -22.781
Traceless
 xyz
x 0.443 3.973 0.000
y 3.973 -2.383 0.000
z 0.000 0.000 1.940
Polar
3z2-r23.879
x2-y21.884
xy3.973
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.371 0.237 0.000
y 0.237 4.803 0.000
z 0.000 0.000 2.777


<r2> (average value of r2) Å2
<r2> 72.059
(<r2>)1/2 8.489