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

using model chemistry: CCSD=FULL/6-31G(2df,p)

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 CCSD=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-228.595244
Energy at 298.15K-228.600193
HF Energy-227.790993
Nuclear repulsion energy120.100771
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 CCSD=FULL/6-31G(2df,p)
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' 3824 3601 63.01      
2 A' 3056 2877 49.90      
3 A' 3024 2847 45.82      
4 A' 1851 1742 105.64      
5 A' 1533 1443 10.00      
6 A' 1496 1409 68.54      
7 A' 1431 1347 16.69      
8 A' 1346 1268 47.47      
9 A' 1180 1111 70.43      
10 A' 900 848 40.41      
11 A' 779 734 12.75      
12 A' 307 289 21.54      
13 A" 3081 2901 22.79      
14 A" 1290 1215 1.55      
15 A" 1140 1073 0.29      
16 A" 759 715 0.13      
17 A" 395 372 81.38      
18 A" 193 182 6.35      

Unscaled Zero Point Vibrational Energy (zpe) 13792.2 cm-1
Scaled (by 0.9416) Zero Point Vibrational Energy (zpe) 12986.7 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 CCSD=FULL/6-31G(2df,p)
ABC
0.61924 0.22125 0.16807

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD=FULL/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 -0.930 0.000
C2 -0.924 0.273 0.000
O3 1.346 -0.578 0.000
O4 -0.510 1.400 0.000
H5 1.341 0.381 0.000
H6 -0.241 -1.535 0.881
H7 -0.241 -1.535 -0.881
H8 -2.007 0.054 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C11.51691.39162.38461.87521.09551.09552.2350
C21.51692.42481.20052.26772.12382.12381.1048
O31.39162.42482.71210.95902.05232.05233.4124
O42.38461.20052.71212.11233.07553.07552.0135
H51.87522.26770.95902.11232.63612.63613.3639
H61.09552.12382.05233.07552.63611.76172.5332
H71.09552.12382.05233.07552.63611.76172.5332
H82.23501.10483.41242.01353.36392.53322.5332

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 122.257 C1 C2 H8 116.084
C1 O3 H5 104.318 C2 C1 O3 112.891
C2 C1 H6 107.681 C2 C1 H7 107.681
O3 C1 H6 110.650 O3 C1 H7 110.650
O4 C2 H8 121.659 H6 C1 H7 107.048
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability