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

using model chemistry: MP2=FULL/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=FULL/6-31G**
 hartrees
Energy at 0K-228.420870
Energy at 298.15K-228.425760
HF Energy-227.771386
Nuclear repulsion energy119.468805
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=FULL/6-31G**
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' 3790 3542 64.05      
2 A' 3086 2884 66.18      
3 A' 3065 2864 45.01      
4 A' 1786 1669 71.45      
5 A' 1551 1450 8.34      
6 A' 1483 1386 75.93      
7 A' 1434 1340 13.02      
8 A' 1334 1246 51.98      
9 A' 1160 1084 72.71      
10 A' 903 844 46.93      
11 A' 773 723 10.03      
12 A' 309 289 22.51      
13 A" 3123 2918 27.48      
14 A" 1275 1191 3.16      
15 A" 1142 1067 0.45      
16 A" 756 706 0.25      
17 A" 397 371 93.24      
18 A" 162 151 10.51      

Unscaled Zero Point Vibrational Energy (zpe) 13764.5 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 12861.6 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=FULL/6-31G**
ABC
0.60691 0.22093 0.16697

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.940 0.000
C2 0.930 -0.244 0.000
O3 -1.344 0.538 0.000
O4 0.501 -1.390 0.000
H5 -1.317 -0.432 0.000
H6 0.233 1.552 0.879
H7 0.233 1.552 -0.879
H8 2.010 -0.032 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C11.50551.40272.38371.90231.09591.09592.2327
C21.50552.40401.22412.25502.11722.11721.1002
O31.40272.40402.66820.97012.07072.07073.4014
O42.38371.22412.66822.05523.08243.08242.0295
H51.90232.25500.97012.05522.66702.66703.3508
H61.09592.11722.07073.08242.66701.75772.5376
H71.09592.11722.07073.08242.66701.75772.5376
H82.23271.10023.40142.02953.35082.53762.5376

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 121.347 C1 C2 H8 117.082
C1 O3 H5 105.121 C2 C1 O3 111.462
C2 C1 H6 107.919 C2 C1 H7 107.919
O3 C1 H6 111.347 O3 C1 H7 111.347
O4 C2 H8 121.571 H6 C1 H7 106.629
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability