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

using model chemistry: PBEPBE/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 PBEPBE/6-31G(2df,p)
 hartrees
Energy at 0K-228.799194
Energy at 298.15K-228.804153
Nuclear repulsion energy119.368163
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(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' 3524 3488 60.34      
2 A' 2885 2855 64.39      
3 A' 2848 2818 65.36      
4 A' 1749 1731 119.50      
5 A' 1434 1419 52.97      
6 A' 1400 1385 42.23      
7 A' 1343 1329 25.30      
8 A' 1266 1253 31.31      
9 A' 1115 1103 75.42      
10 A' 854 845 43.99      
11 A' 752 745 5.07      
12 A' 295 291 24.17      
13 A" 2893 2863 24.34      
14 A" 1194 1182 2.99      
15 A" 1060 1050 0.16      
16 A" 682 675 0.08      
17 A" 468 463 62.40      
18 A" 234 232 1.25      

Unscaled Zero Point Vibrational Energy (zpe) 12996.8 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 12862.9 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 PBEPBE/6-31G(2df,p)
ABC
0.60588 0.22120 0.16712

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.938 0.000
C2 0.929 -0.253 0.000
O3 -1.341 0.546 0.000
O4 0.488 -1.390 0.000
H5 -1.296 -0.436 0.000
H6 0.258 1.563 0.886
H7 0.258 1.563 -0.886
H8 2.028 -0.042 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C11.51041.39702.37831.88861.11461.11462.2520
C21.51042.40661.21922.23262.12912.12911.1190
O31.39702.40662.66340.98302.09192.09193.4197
O42.37831.21922.66342.02323.09143.09142.0465
H51.88862.23260.98302.02322.68252.68253.3472
H61.11462.12912.09193.09142.68251.77152.5478
H71.11462.12912.09193.09142.68251.77152.5478
H82.25201.11903.41972.04653.34722.54782.5478

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 120.841 C1 C2 H8 117.066
C1 O3 H5 103.664 C2 C1 O3 111.676
C2 C1 H6 107.447 C2 C1 H7 107.447
O3 C1 H6 112.313 O3 C1 H7 112.313
O4 C2 H8 122.093 H6 C1 H7 105.261
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.152      
2 C 0.108      
3 O -0.385      
4 O -0.226      
5 H 0.289      
6 H 0.132      
7 H 0.132      
8 H 0.102      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.756 1.199 0.000 2.126
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.775 3.372 0.000
y 3.372 -25.336 0.000
z 0.000 0.000 -22.782
Traceless
 xyz
x 0.284 3.372 0.000
y 3.372 -2.058 0.000
z 0.000 0.000 1.774
Polar
3z2-r23.547
x2-y21.561
xy3.372
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.988 0.077 0.000
y 0.077 5.289 0.000
z 0.000 0.000 3.228


<r2> (average value of r2) Å2
<r2> 72.511
(<r2>)1/2 8.515