return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: HF/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 HF/6-31G*
 hartrees
Energy at 0K-227.763058
Energy at 298.15K 
HF Energy-227.763058
Nuclear repulsion energy120.546113
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/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' 4055 3643 88.67      
2 A' 3204 2878 105.77      
3 A' 3179 2857 18.19      
4 A' 2021 1816 189.45      
5 A' 1647 1480 4.17      
6 A' 1599 1437 74.25      
7 A' 1536 1380 18.94      
8 A' 1417 1273 71.47      
9 A' 1254 1127 89.74      
10 A' 943 848 46.59      
11 A' 820 737 22.65      
12 A' 322 289 23.38      
13 A" 3213 2887 44.80      
14 A" 1377 1238 1.20      
15 A" 1238 1112 0.06      
16 A" 817 734 2.33      
17 A" 348 313 117.68      
18 A" 145 130 21.29      

Unscaled Zero Point Vibrational Energy (zpe) 14567.2 cm-1
Scaled (by 0.8985) Zero Point Vibrational Energy (zpe) 13088.6 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 HF/6-31G*
ABC
-0.01469 0.00476  

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.929 0.000
C2 0.919 -0.266 0.000
O3 -1.333 0.558 0.000
O4 0.510 -1.383 0.000
H5 -1.381 -0.392 0.000
H6 0.234 1.534 0.874
H7 0.234 1.534 -0.874
H8 1.990 -0.053 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C11.50731.38392.36681.91051.08881.08882.2192
C21.50732.39851.18902.30342.11562.11561.0925
O31.38392.39852.67670.95092.04262.04263.3795
O42.36681.18902.67672.13503.05763.05761.9901
H51.91052.30340.95092.13502.66082.66083.3885
H61.08882.11562.04263.05762.66081.74842.5239
H71.08882.11562.04263.05762.66081.74842.5239
H82.21921.09253.37951.99013.38852.52392.5239

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 122.316 C1 C2 H8 116.300
C1 O3 H5 108.400 C2 C1 O3 112.038
C2 C1 H6 108.071 C2 C1 H7 108.071
O3 C1 H6 110.825 O3 C1 H7 110.825
O4 C2 H8 121.384 H6 C1 H7 106.809
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.049      
2 C 0.290      
3 O -0.745      
4 O -0.486      
5 H 0.471      
6 H 0.178      
7 H 0.178      
8 H 0.162      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.217 1.477 0.000 2.664
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.824 4.472 0.000
y 4.472 -26.681 0.000
z 0.000 0.000 -22.907
Traceless
 xyz
x 0.970 4.472 0.000
y 4.472 -3.315 0.000
z 0.000 0.000 2.345
Polar
3z2-r24.690
x2-y22.857
xy4.472
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.874 0.332 0.000
y 0.332 4.406 0.000
z 0.000 0.000 2.664


<r2> (average value of r2) Å2
<r2> 72.413
(<r2>)1/2 8.510