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

using model chemistry: MP2/LANL2DZ

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/LANL2DZ
 hartrees
Energy at 0K-228.114575
Energy at 298.15K-228.119258
HF Energy-227.696726
Nuclear repulsion energy115.521012
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/LANL2DZ
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' 3607 3474 29.02      
2 A' 3052 2939 109.09      
3 A' 3035 2923 11.25      
4 A' 1589 1530 37.12      
5 A' 1530 1473 17.33      
6 A' 1428 1375 55.55      
7 A' 1397 1346 2.73      
8 A' 1283 1235 70.66      
9 A' 1050 1012 41.63      
10 A' 846 815 52.53      
11 A' 724 698 11.01      
12 A' 274 264 20.95      
13 A" 3098 2984 29.11      
14 A" 1221 1176 6.63      
15 A" 1117 1076 0.74      
16 A" 755 727 0.46      
17 A" 346 333 150.25      
18 A" 138 133 30.49      

Unscaled Zero Point Vibrational Energy (zpe) 13245.0 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 12756.3 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/LANL2DZ
ABC
0.56998 0.20472 0.15512

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/LANL2DZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.964 0.000
C2 0.969 -0.230 0.000
O3 -1.407 0.541 0.000
O4 0.558 -1.431 0.000
H5 -1.455 -0.447 0.000
H6 0.189 1.581 0.898
H7 0.189 1.581 -0.898
H8 2.052 0.006 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C11.53801.46912.45902.02671.10541.10542.2644
C21.53802.49811.26932.43412.16642.16641.1080
O31.46912.49812.78340.98882.10602.10603.4998
O42.45901.26932.78342.24073.16413.16412.0730
H52.02672.43410.98882.24072.76072.76073.5362
H61.10542.16642.10603.16412.76071.79512.5988
H71.10542.16642.10603.16412.76071.79512.5988
H82.26441.10803.49982.07303.53622.59882.5988

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 122.015 C1 C2 H8 116.757
C1 O3 H5 109.543 C2 C1 O3 112.329
C2 C1 H6 108.978 C2 C1 H7 108.978
O3 C1 H6 108.957 O3 C1 H7 108.957
O4 C2 H8 121.228 H6 C1 H7 108.572
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability