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

using model chemistry: MP2/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 MP2/CEP-121G
 hartrees
Energy at 0K-44.993090
Energy at 298.15K-44.997522
HF Energy-44.567998
Nuclear repulsion energy65.057898
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 MP2/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' 3568 3483 27.26      
2 A' 3005 2933 99.75      
3 A' 2986 2914 10.25      
4 A' 1580 1542 39.38      
5 A' 1522 1485 15.95      
6 A' 1420 1386 51.61      
7 A' 1390 1357 4.31      
8 A' 1268 1237 63.40      
9 A' 1049 1023 45.73      
10 A' 849 828 53.88      
11 A' 719 701 11.90      
12 A' 276 270 20.43      
13 A" 3053 2979 29.57      
14 A" 1200 1171 7.93      
15 A" 1112 1086 0.81      
16 A" 748 730 0.10      
17 A" 317 310 124.43      
18 A" 6 6 44.74      

Unscaled Zero Point Vibrational Energy (zpe) 13032.8 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 12720.0 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 MP2/CEP-121G
ABC
0.56589 0.20514 0.15505

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.969 0.000
C2 0.972 -0.227 0.000
O3 -1.407 0.535 0.000
O4 0.555 -1.431 0.000
H5 -1.443 -0.452 0.000
H6 0.185 1.586 0.897
H7 0.185 1.586 -0.897
H8 2.057 -0.005 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C11.54201.47252.46332.02591.10401.10402.2759
C21.54202.49861.27372.42632.17112.17111.1069
O31.47252.49862.77710.98792.10812.10813.5056
O42.46331.27372.77712.22493.16923.16922.0709
H52.02592.42630.98792.22492.75912.75913.5287
H61.10402.17112.10813.16922.75911.79302.6153
H71.10402.17112.10813.16922.75911.79302.6153
H82.27591.10693.50562.07093.52872.61532.6153

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 121.758 C1 C2 H8 117.504
C1 O3 H5 109.266 C2 C1 O3 111.943
C2 C1 H6 109.152 C2 C1 H7 109.152
O3 C1 H6 108.972 O3 C1 H7 108.972
O4 C2 H8 120.737 H6 C1 H7 108.590
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability