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: B3LYP/CEP-121G*

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 B3LYP/CEP-121G*
 hartrees
Energy at 0K-45.647484
Energy at 298.15K-45.652282
Nuclear repulsion energy66.702937
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 B3LYP/CEP-121G*
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' 3680 3567 43.99      
2 A' 2976 2885 76.13      
3 A' 2933 2843 76.22      
4 A' 1764 1710 152.74      
5 A' 1491 1445 18.25      
6 A' 1447 1403 73.99      
7 A' 1387 1345 24.07      
8 A' 1292 1253 48.23      
9 A' 1121 1086 79.32      
10 A' 850 824 47.41      
11 A' 749 726 10.32      
12 A' 285 276 23.54      
13 A" 2994 2902 39.22      
14 A" 1237 1199 4.12      
15 A" 1102 1068 0.34      
16 A" 718 696 0.33      
17 A" 376 365 99.25      
18 A" 172 166 11.48      

Unscaled Zero Point Vibrational Energy (zpe) 13285.3 cm-1
Scaled (by 0.9694) Zero Point Vibrational Energy (zpe) 12878.7 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 B3LYP/CEP-121G*
ABC
0.60513 0.21405 0.16296

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.943 0.000
C2 0.937 -0.259 0.000
O3 -1.360 0.559 0.000
O4 0.514 -1.404 0.000
H5 -1.364 -0.418 0.000
H6 0.241 1.558 0.886
H7 0.241 1.558 -0.886
H8 2.028 -0.043 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C11.52401.41382.40291.92701.10521.10522.2552
C21.52402.43871.22102.30722.13772.13771.1119
O31.41382.43872.71410.97622.08562.08563.4416
O42.40291.22102.71412.12203.10383.10382.0356
H51.92702.30720.97622.12202.69582.69583.4132
H61.10522.13772.08563.10382.69581.77202.5576
H71.10522.13772.08563.10382.69581.77202.5576
H82.25521.11193.44162.03563.41322.55762.5576

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 121.782 C1 C2 H8 116.776
C1 O3 H5 106.018 C2 C1 O3 112.167
C2 C1 H6 107.727 C2 C1 H7 107.727
O3 C1 H6 111.191 O3 C1 H7 111.191
O4 C2 H8 121.442 H6 C1 H7 106.584
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.099      
2 C 0.063      
3 O -0.540      
4 O -0.287      
5 H 0.413      
6 H 0.164      
7 H 0.164      
8 H 0.123      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.060 1.354 0.000 2.465
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.333 4.289 0.000
y 4.289 -26.402 0.000
z 0.000 0.000 -23.227
Traceless
 xyz
x 0.482 4.289 0.000
y 4.289 -2.622 0.000
z 0.000 0.000 2.141
Polar
3z2-r24.282
x2-y22.069
xy4.289
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.892 0.264 0.000
y 0.264 5.300 0.000
z 0.000 0.000 3.246


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000