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: QCISD/6-311G**

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/6-311G**
 hartrees
Energy at 0K-228.534804
Energy at 298.15K-228.539583
HF Energy-227.828918
Nuclear repulsion energy119.421368
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/6-311G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3836 3660 57.14      
2 A' 3027 2888 57.87      
3 A' 2987 2850 67.78      
4 A' 1814 1730 115.38      
5 A' 1520 1450 9.44      
6 A' 1486 1418 68.36      
7 A' 1417 1352 17.66      
8 A' 1331 1270 36.18      
9 A' 1163 1110 65.88      
10 A' 886 845 43.29      
11 A' 772 737 13.44      
12 A' 301 288 22.16      
13 A" 3053 2913 31.74      
14 A" 1267 1209 1.65      
15 A" 1129 1077 0.69      
16 A" 746 712 0.47      
17 A" 363 346 83.16      
18 A" 118 113 16.88      

Unscaled Zero Point Vibrational Energy (zpe) 13607.3 cm-1
Scaled (by 0.9541) Zero Point Vibrational Energy (zpe) 12982.7 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 QCISD/6-311G**
ABC
0.61384 0.21803 0.16590

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.939 0.000
C2 0.929 -0.260 0.000
O3 -1.347 0.553 0.000
O4 0.504 -1.393 0.000
H5 -1.330 -0.410 0.000
H6 0.242 1.546 0.887
H7 0.242 1.546 -0.887
H8 2.015 -0.044 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C11.51641.40132.38621.89411.10131.10132.2423
C21.51642.41641.21012.26302.12552.12551.1077
O31.40132.41642.68620.96322.07302.07303.4149
O42.38621.21012.68622.08093.08113.08112.0251
H51.89412.26300.96322.08092.66112.66113.3646
H61.10132.12552.07303.08112.66111.77302.5414
H71.10132.12552.07303.08112.66111.77302.5414
H82.24231.10773.41492.02513.36462.54142.5414

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 121.728 C1 C2 H8 116.548
C1 O3 H5 104.948 C2 C1 O3 111.767
C2 C1 H6 107.521 C2 C1 H7 107.521
O3 C1 H6 111.292 O3 C1 H7 111.292
O4 C2 H8 121.724 H6 C1 H7 107.220
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability