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/6-31G*

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/6-31G*
 hartrees
Energy at 0K-228.397657
Energy at 298.15K-228.402487
HF Energy-227.759603
Nuclear repulsion energy119.041984
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/6-31G*
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' 3701 3525 55.24      
2 A' 3033 2888 75.44      
3 A' 3014 2870 32.13      
4 A' 1814 1728 97.38      
5 A' 1549 1475 6.17      
6 A' 1499 1427 89.43      
7 A' 1431 1362 14.34      
8 A' 1343 1279 51.10      
9 A' 1161 1106 64.20      
10 A' 899 856 44.77      
11 A' 771 734 12.51      
12 A' 314 299 21.39      
13 A" 3055 2909 31.35      
14 A" 1267 1207 3.23      
15 A" 1140 1086 0.36      
16 A" 759 723 0.33      
17 A" 375 357 99.60      
18 A" 142 135 14.10      

Unscaled Zero Point Vibrational Energy (zpe) 13632.5 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 12982.2 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/6-31G*
ABC
0.60614 0.21831 0.16548

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 -0.935 0.000
C2 -0.934 0.273 0.000
O3 1.360 -0.586 0.000
O4 -0.520 1.415 0.000
H5 1.381 0.385 0.000
H6 -0.238 -1.547 0.886
H7 -0.238 -1.547 -0.886
H8 -2.023 0.053 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C11.52731.40422.40681.91021.10201.10202.2519
C21.52732.44981.21472.31752.14032.14031.1111
O31.40422.44982.74520.97112.06402.06403.4433
O42.40681.21472.74522.16133.10383.10382.0286
H51.91022.31750.97112.16132.67102.67103.4200
H61.10202.14032.06403.10382.67101.77102.5558
H71.10202.14032.06403.10382.67101.77102.5558
H82.25191.11113.44332.02863.42002.55582.5558

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 122.330 C1 C2 H8 116.298
C1 O3 H5 105.613 C2 C1 O3 113.307
C2 C1 H6 107.879 C2 C1 H7 107.879
O3 C1 H6 110.298 O3 C1 H7 110.298
O4 C2 H8 121.373 H6 C1 H7 106.937
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability