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

using model chemistry: MP2=FULL/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 MP2=FULL/3-21G
 hartrees
Energy at 0K-226.914109
Energy at 298.15K-226.919090
HF Energy-226.479079
Nuclear repulsion energy117.317439
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/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' 3433 3278 24.48      
2 A' 3062 2924 48.36      
3 A' 3042 2904 47.77      
4 A' 1632 1559 9.35      
5 A' 1593 1521 13.54      
6 A' 1489 1421 110.66      
7 A' 1440 1375 8.51      
8 A' 1330 1270 48.23      
9 A' 1050 1002 32.80      
10 A' 839 801 42.87      
11 A' 758 724 7.43      
12 A' 320 305 21.93      
13 A" 3087 2947 29.00      
14 A" 1259 1203 7.97      
15 A" 1151 1099 0.18      
16 A" 804 767 0.09      
17 A" 456 435 105.60      
18 A" 187 178 9.96      

Unscaled Zero Point Vibrational Energy (zpe) 13465.0 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 12856.3 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/3-21G
ABC
0.56736 0.21839 0.16252

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.973 0.000
C2 0.955 -0.221 0.000
O3 -1.377 0.497 0.000
O4 0.517 -1.396 0.000
H5 -1.293 -0.499 0.000
H6 0.209 1.586 0.888
H7 0.209 1.586 -0.888
H8 2.029 0.008 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C11.52841.45742.42441.95901.09881.09882.2465
C21.52842.44041.25432.26552.14652.14651.0978
O31.45742.44042.67800.99902.11882.11883.4412
O42.42441.25432.67802.02063.12613.12612.0631
H51.95902.26550.99902.02062.71812.71813.3606
H61.09882.14652.11883.12612.71811.77562.5671
H71.09882.14652.11883.12612.71811.77562.5671
H82.24651.09783.44122.06313.36062.56712.5671

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 120.890 C1 C2 H8 116.653
C1 O3 H5 104.227 C2 C1 O3 109.613
C2 C1 H6 108.468 C2 C1 H7 108.468
O3 C1 H6 111.200 O3 C1 H7 111.200
O4 C2 H8 122.457 H6 C1 H7 107.801
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability