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/aug-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/aug-cc-pVTZ
 hartrees
Energy at 0K-228.677518
Energy at 298.15K-228.682472
HF Energy-227.860357
Nuclear repulsion energy119.601447
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/aug-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' 3715 3540 75.26      
2 A' 3040 2897 55.91      
3 A' 3006 2864 48.82      
4 A' 1754 1671 99.18      
5 A' 1497 1426 16.07      
6 A' 1446 1378 41.60      
7 A' 1396 1330 14.32      
8 A' 1302 1241 44.76      
9 A' 1144 1090 79.06      
10 A' 887 845 47.47      
11 A' 763 727 10.59      
12 A' 288 274 21.68      
13 A" 3075 2930 11.06      
14 A" 1264 1205 2.06      
15 A" 1110 1058 0.55      
16 A" 731 697 0.14      
17 A" 418 398 84.69      
18 A" 214 204 3.13      

Unscaled Zero Point Vibrational Energy (zpe) 13524.8 cm-1
Scaled (by 0.9529) Zero Point Vibrational Energy (zpe) 12887.8 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/aug-cc-pVTZ
ABC
0.61324 0.21982 0.16682

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 -0.930 0.000
C2 -0.929 0.269 0.000
O3 1.354 -0.579 0.000
O4 -0.517 1.405 0.000
H5 1.367 0.386 0.000
H6 -0.238 -1.534 0.882
H7 -0.238 -1.534 -0.882
H8 -2.011 0.045 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C11.51701.39862.39121.89811.09441.09442.2352
C21.51702.43551.20862.29992.12232.12231.1047
O31.39862.43552.72630.96532.05452.05453.4224
O42.39121.20862.72632.14173.08023.08022.0204
H51.89812.29990.96532.14172.65312.65313.3959
H61.09442.12232.05453.08022.65311.76312.5328
H71.09442.12232.05453.08022.65311.76312.5328
H82.23521.10473.42242.02043.39592.53282.5328

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 122.242 C1 C2 H8 116.108
C1 O3 H5 105.354 C2 C1 O3 113.243
C2 C1 H6 107.623 C2 C1 H7 107.623
O3 C1 H6 110.402 O3 C1 H7 110.402
O4 C2 H8 121.650 H6 C1 H7 107.318
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability