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

using model chemistry: QCISD(T)/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 QCISD(T)/6-31G*
 hartrees
Energy at 0K-228.414429
Energy at 298.15K-228.419256
HF Energy-227.758727
Nuclear repulsion energy118.884137
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 QCISD(T)/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' 3658 3509        
2 A' 3009 2887        
3 A' 2989 2867        
4 A' 1785 1713        
5 A' 1538 1476        
6 A' 1490 1430        
7 A' 1419 1361        
8 A' 1333 1278        
9 A' 1147 1100        
10 A' 891 854        
11 A' 765 734        
12 A' 315 302        
13 A" 3032 2909        
14 A" 1255 1204        
15 A" 1127 1081        
16 A" 750 719        
17 A" 381 365        
18 A" 144 138        

Unscaled Zero Point Vibrational Energy (zpe) 13512.9 cm-1
Scaled (by 0.9593) Zero Point Vibrational Energy (zpe) 12962.9 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 QCISD(T)/6-31G*
ABC
0.60237 0.21850 0.16532

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.945 0.000
C2 0.934 -0.247 0.000
O3 -1.350 0.541 0.000
O4 0.506 -1.395 0.000
H5 -1.330 -0.438 0.000
H6 0.229 1.563 0.887
H7 0.229 1.563 -0.887
H8 2.023 -0.038 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C11.51461.40952.39441.91871.10511.10512.2490
C21.51462.41591.22492.27132.13562.13561.1089
O31.40952.41592.68170.97892.08022.08023.4221
O42.39441.22492.68172.06993.10073.10072.0353
H51.91872.27130.97892.06992.68742.68743.3760
H61.10512.13562.08023.10072.68741.77402.5625
H71.10512.13562.08023.10072.68741.77402.5625
H82.24901.10893.42212.03533.37602.56252.5625

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 121.500 C1 C2 H8 117.177
C1 O3 H5 105.481 C2 C1 O3 111.371
C2 C1 H6 108.197 C2 C1 H7 108.197
O3 C1 H6 111.064 O3 C1 H7 111.064
O4 C2 H8 121.323 H6 C1 H7 106.770
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability