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

using model chemistry: MP2=FULL/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 MP2=FULL/6-31G
 hartrees
Energy at 0K-228.089015
Energy at 298.15K-228.093750
HF Energy-227.649907
Nuclear repulsion energy116.719704
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=FULL/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' 3581 3402 30.88      
2 A' 3066 2913 81.57      
3 A' 3048 2896 9.55      
4 A' 1634 1552 25.38      
5 A' 1567 1488 13.14      
6 A' 1451 1379 63.66      
7 A' 1431 1360 8.74      
8 A' 1313 1248 68.11      
9 A' 1064 1011 34.32      
10 A' 874 830 59.15      
11 A' 744 707 10.62      
12 A' 303 288 21.02      
13 A" 3093 2938 24.73      
14 A" 1243 1181 6.95      
15 A" 1141 1084 0.36      
16 A" 782 743 0.03      
17 A" 348 330 130.27      
18 A" 120 114 33.40      

Unscaled Zero Point Vibrational Energy (zpe) 13400.6 cm-1
Scaled (by 0.9501) Zero Point Vibrational Energy (zpe) 12732.0 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=FULL/6-31G
ABC
0.57507 0.21154 0.15931

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.959 0.000
C2 0.957 -0.221 0.000
O3 -1.389 0.521 0.000
O4 0.545 -1.412 0.000
H5 -1.405 -0.464 0.000
H6 0.190 1.580 0.889
H7 0.190 1.580 -0.889
H8 2.035 0.005 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C11.51931.45642.43311.99991.10121.10122.2475
C21.51932.46071.26082.37512.15002.15001.1011
O31.45642.46072.73440.98482.09932.09933.4626
O42.43311.26082.73442.16873.14193.14192.0564
H51.99992.37510.98482.16872.74142.74143.4721
H61.10122.15002.09933.14192.74141.77822.5835
H71.10122.15002.09933.14192.74141.77822.5835
H82.24751.10113.46262.05643.47212.58352.5835

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 121.853 C1 C2 H8 117.225
C1 O3 H5 108.463 C2 C1 O3 111.548
C2 C1 H6 109.219 C2 C1 H7 109.219
O3 C1 H6 109.545 O3 C1 H7 109.545
O4 C2 H8 120.922 H6 C1 H7 107.682
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability