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

using model chemistry: PBEPBE/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 PBEPBE/3-21G
 hartrees
Energy at 0K-227.504969
Energy at 298.15K-227.510003
Nuclear repulsion energy117.909160
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/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' 3126 3098 32.76      
2 A' 2915 2888 98.26      
3 A' 2883 2857 14.00      
4 A' 1643 1628 55.28      
5 A' 1488 1475 18.44      
6 A' 1446 1433 125.91      
7 A' 1358 1345 14.07      
8 A' 1263 1251 42.65      
9 A' 1037 1028 40.72      
10 A' 829 822 45.87      
11 A' 749 742 2.76      
12 A' 306 303 26.26      
13 A" 2894 2868 31.75      
14 A" 1191 1180 12.48      
15 A" 1075 1065 0.00      
16 A" 739 732 0.40      
17 A" 528 523 79.91      
18 A" 236 234 3.13      

Unscaled Zero Point Vibrational Energy (zpe) 12853.0 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 12736.0 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 PBEPBE/3-21G
ABC
0.56973 0.22307 0.16534

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.963 0.000
C2 0.950 -0.224 0.000
O3 -1.364 0.500 0.000
O4 0.491 -1.386 0.000
H5 -1.242 -0.516 0.000
H6 0.243 1.587 0.892
H7 0.243 1.587 -0.892
H8 2.038 -0.000 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C11.52071.44052.40031.93231.11491.11492.2540
C21.52072.42401.24872.21142.13912.13911.1110
O31.44052.42402.64521.02322.13522.13523.4379
O42.40031.24872.64521.93973.11393.11392.0765
H51.93232.21141.02321.93972.72512.72513.3205
H61.11492.13912.13523.11392.72511.78332.5564
H71.11492.13912.13523.11392.72511.78332.5564
H82.25401.11103.43792.07653.32052.55642.5564

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 119.837 C1 C2 H8 116.990
C1 O3 H5 101.978 C2 C1 O3 109.853
C2 C1 H6 107.511 C2 C1 H7 107.511
O3 C1 H6 112.730 O3 C1 H7 112.730
O4 C2 H8 123.174 H6 C1 H7 106.216
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.240      
2 C 0.166      
3 O -0.525      
4 O -0.378      
5 H 0.332      
6 H 0.225      
7 H 0.225      
8 H 0.195      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.258 1.036 0.000 2.484
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.590 3.834 0.000
y 3.834 -25.413 0.000
z 0.000 0.000 -23.026
Traceless
 xyz
x -0.371 3.834 0.000
y 3.834 -1.605 0.000
z 0.000 0.000 1.976
Polar
3z2-r23.952
x2-y20.823
xy3.834
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.426 0.199 0.000
y 0.199 4.835 0.000
z 0.000 0.000 2.403


<r2> (average value of r2) Å2
<r2> 73.369
(<r2>)1/2 8.566