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

using model chemistry: B3PW91/3-21G

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 B3PW91/3-21G
 hartrees
Energy at 0K-227.677617
Energy at 298.15K-227.682659
Nuclear repulsion energy118.644947
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 B3PW91/3-21G
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' 3366 3236 33.69      
2 A' 3013 2896 87.27      
3 A' 2986 2870 12.10      
4 A' 1721 1654 62.22      
5 A' 1535 1476 13.15      
6 A' 1471 1414 120.69      
7 A' 1411 1357 14.23      
8 A' 1307 1257 54.04      
9 A' 1074 1033 44.90      
10 A' 854 820 48.25      
11 A' 767 737 6.51      
12 A' 303 291 27.16      
13 A" 3007 2890 27.83      
14 A" 1241 1193 9.79      
15 A" 1118 1075 0.01      
16 A" 776 746 0.41      
17 A" 495 476 103.20      
18 A" 225 216 5.01      

Unscaled Zero Point Vibrational Energy (zpe) 13335.0 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 12817.6 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 B3PW91/3-21G
ABC
0.58067 0.22407 0.16673

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.957 0.000
C2 0.943 -0.226 0.000
O3 -1.358 0.499 0.000
O4 0.500 -1.379 0.000
H5 -1.274 -0.501 0.000
H6 0.230 1.574 0.886
H7 0.230 1.574 -0.886
H8 2.020 0.001 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C11.51241.43302.38841.93621.10371.10372.2349
C21.51242.41211.23502.23382.12902.12901.1009
O31.43302.41212.64141.00352.11232.11233.4146
O42.38841.23502.64141.97923.09473.09472.0527
H51.93622.23381.00351.97922.71172.71173.3322
H61.10372.12902.11233.09472.71171.77112.5427
H71.10372.12902.11233.09472.71171.77112.5427
H82.23491.10093.41462.05273.33222.54272.5427

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 120.431 C1 C2 H8 116.685
C1 O3 H5 103.841 C2 C1 O3 109.926
C2 C1 H6 107.916 C2 C1 H7 107.916
O3 C1 H6 112.092 O3 C1 H7 112.092
O4 C2 H8 122.884 H6 C1 H7 106.699
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.237      
2 C 0.191      
3 O -0.573      
4 O -0.416      
5 H 0.358      
6 H 0.235      
7 H 0.235      
8 H 0.207      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.368 1.144 0.000 2.630
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.477 4.138 0.000
y 4.138 -25.577 0.000
z 0.000 0.000 -22.863
Traceless
 xyz
x -0.257 4.138 0.000
y 4.138 -1.907 0.000
z 0.000 0.000 2.164
Polar
3z2-r24.328
x2-y21.100
xy4.138
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.077 0.297 0.000
y 0.297 4.559 0.000
z 0.000 0.000 2.330


<r2> (average value of r2) Å2
<r2> 72.848
(<r2>)1/2 8.535