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

using model chemistry: B2PLYP/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 B2PLYP/6-31G*
 hartrees
Energy at 0K-228.809432
Energy at 298.15K-228.814321
HF Energy-228.607133
Nuclear repulsion energy119.395766
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 B2PLYP/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' 3666 3480 58.50      
2 A' 3033 2879 79.76      
3 A' 3011 2858 40.41      
4 A' 1797 1706 104.68      
5 A' 1537 1459 11.89      
6 A' 1485 1410 88.13      
7 A' 1423 1351 16.39      
8 A' 1332 1264 49.59      
9 A' 1152 1093 71.28      
10 A' 887 842 47.27      
11 A' 771 731 9.68      
12 A' 308 292 22.80      
13 A" 3050 2895 31.30      
14 A" 1264 1200 3.16      
15 A" 1131 1073 0.14      
16 A" 745 707 0.38      
17 A" 401 381 94.88      
18 A" 175 166 9.06      

Unscaled Zero Point Vibrational Energy (zpe) 13583.2 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 12893.1 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 B2PLYP/6-31G*
ABC
0.60890 0.21998 0.16660

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 -0.934 0.000
C2 -0.932 0.272 0.000
O3 1.354 -0.582 0.000
O4 -0.513 1.409 0.000
H5 1.363 0.388 0.000
H6 -0.240 -1.544 0.883
H7 -0.240 -1.544 -0.883
H8 -2.020 0.053 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C11.52431.39952.39861.89881.09951.09952.2478
C21.52432.44081.21162.29822.13442.13441.1093
O31.39952.44082.72990.96972.06112.06113.4332
O42.39861.21162.72992.13643.09423.09422.0267
H51.89882.29820.96972.13642.66132.66133.3993
H61.09952.13442.06113.09422.66131.76542.5485
H71.09952.13442.06113.09422.66131.76542.5485
H82.24781.10933.43322.02673.39932.54852.5485

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 122.082 C1 C2 H8 116.306
C1 O3 H5 105.090 C2 C1 O3 113.124
C2 C1 H6 107.776 C2 C1 H7 107.776
O3 C1 H6 110.557 O3 C1 H7 110.557
O4 C2 H8 121.612 H6 C1 H7 106.792
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.075      
2 C 0.213      
3 O -0.645      
4 O -0.388      
5 H 0.423      
6 H 0.166      
7 H 0.166      
8 H 0.140      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.074 -1.201 0.000 2.397
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.146 4.028 0.000
y 4.028 -25.919 0.000
z 0.000 0.000 -22.972
Traceless
 xyz
x 0.299 4.028 0.000
y 4.028 -2.360 0.000
z 0.000 0.000 2.061
Polar
3z2-r24.122
x2-y21.773
xy4.028
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.345 0.270 0.000
y 0.270 4.779 0.000
z 0.000 0.000 2.752


<r2> (average value of r2) Å2
<r2> 72.870
(<r2>)1/2 8.536