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

using model chemistry: MP2/6-31G

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 MP2/6-31G
 hartrees
Energy at 0K-228.084285
Energy at 298.15K-228.089018
HF Energy-227.649861
Nuclear repulsion energy116.702639
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 MP2/6-31G
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 3426 30.82      
2 A' 3066 2934 81.65      
3 A' 3048 2916 9.66      
4 A' 1634 1563 25.37      
5 A' 1567 1499 13.15      
6 A' 1451 1388 63.82      
7 A' 1431 1369 8.72      
8 A' 1313 1257 67.93      
9 A' 1064 1018 34.24      
10 A' 874 836 59.14      
11 A' 744 712 10.63      
12 A' 303 290 21.02      
13 A" 3092 2959 24.82      
14 A" 1243 1189 6.96      
15 A" 1141 1092 0.36      
16 A" 782 748 0.03      
17 A" 347 332 130.10      
18 A" 119 114 33.53      

Unscaled Zero Point Vibrational Energy (zpe) 13398.8 cm-1
Scaled (by 0.9568) Zero Point Vibrational Energy (zpe) 12819.9 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 MP2/6-31G
ABC
0.57497 0.21145 0.15925

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

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 -1.413 0.000
H5 -1.406 -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
C11.51961.45672.43352.00011.10131.10132.2477
C21.51962.46121.26092.37562.15032.15031.1012
O31.45672.46122.73500.98492.09952.09953.4631
O42.43351.26092.73502.16933.14233.14232.0566
H52.00012.37560.98492.16932.74162.74163.4727
H61.10132.15032.09953.14232.74161.77842.5838
H71.10132.15032.09953.14232.74161.77842.5838
H82.24771.10123.46312.05663.47272.58382.5838

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 121.857 C1 C2 H8 117.215
C1 O3 H5 108.459 C2 C1 O3 111.554
C2 C1 H6 109.218 C2 C1 H7 109.218
O3 C1 H6 109.541 O3 C1 H7 109.541
O4 C2 H8 120.927 H6 C1 H7 107.686
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability