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/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-228.657690
Energy at 298.15K 
HF Energy-227.856225
Nuclear repulsion energy119.796502
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/cc-pVTZ
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' 3737 3549 73.51      
2 A' 3043 2889 55.54      
3 A' 3008 2856 56.76      
4 A' 1768 1679 89.34      
5 A' 1502 1426 14.16      
6 A' 1457 1384 54.36      
7 A' 1405 1334 15.85      
8 A' 1314 1248 43.88      
9 A' 1152 1094 76.48      
10 A' 891 846 47.36      
11 A' 770 731 10.33      
12 A' 294 279 23.06      
13 A" 3078 2923 16.52      
14 A" 1267 1203 2.08      
15 A" 1117 1061 0.64      
16 A" 738 701 0.00      
17 A" 424 403 81.43      
18 A" 213 203 2.89      

Unscaled Zero Point Vibrational Energy (zpe) 13589.6 cm-1
Scaled (by 0.9495) Zero Point Vibrational Energy (zpe) 12903.3 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/cc-pVTZ
ABC
-0.01497 0.00407  

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.936 0.000
C2 0.925 -0.248 0.000
O3 -1.342 0.543 0.000
O4 0.503 -1.387 0.000
H5 -1.317 -0.426 0.000
H6 0.239 1.544 0.879
H7 0.239 1.544 -0.879
H8 2.005 -0.034 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C11.50201.39852.37671.89371.09551.09552.2274
C21.50202.40101.21522.24862.11052.11051.1011
O31.39852.40102.67000.96872.06752.06753.3967
O42.37671.21522.67002.05793.07173.07172.0220
H51.89372.24860.96872.05792.65922.65923.3447
H61.09552.11052.06753.07172.65921.75832.5266
H71.09552.11052.06753.07172.65921.75832.5266
H82.22741.10113.39672.02203.34472.52662.5266

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 121.656 C1 C2 H8 116.827
C1 O3 H5 104.797 C2 C1 O3 111.700
C2 C1 H6 107.658 C2 C1 H7 107.658
O3 C1 H6 111.418 O3 C1 H7 111.418
O4 C2 H8 121.516 H6 C1 H7 106.746
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability