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: MP2/6-31+G**

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 MP2/6-31+G**
 hartrees
Energy at 0K-228.423813
Energy at 298.15K 
HF Energy-227.779934
Nuclear repulsion energy118.957534
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 MP2/6-31+G**
Rotational Constants (cm-1) from geometry optimized at MP2/6-31+G**
ABC
0.60691 0.21727 0.16491

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.939 0.000
C2 0.933 -0.243 0.000
O3 -1.354 0.545 0.000
O4 0.516 -1.398 0.000
H5 -1.358 -0.427 0.000
H6 0.223 1.549 0.882
H7 0.223 1.549 -0.882
H8 2.012 -0.026 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C11.50601.40962.39261.92581.09591.09592.2316
C21.50602.41901.22752.29872.12042.12041.1006
O31.40962.41902.69620.97192.06692.06693.4140
O42.39261.22752.69622.11053.09003.09002.0298
H51.92582.29870.97192.11052.68002.68003.3940
H61.09592.12042.06693.09002.68001.76492.5421
H71.09592.12042.06693.09002.68001.76492.5421
H82.23161.10063.41402.02983.39402.54212.5421

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 121.828 C1 C2 H8 116.917
C1 O3 H5 106.475 C2 C1 O3 112.084
C2 C1 H6 108.129 C2 C1 H7 108.129
O3 C1 H6 110.536 O3 C1 H7 110.536
O4 C2 H8 121.256 H6 C1 H7 107.258
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability