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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-228.106955
Energy at 298.15K-228.111645
HF Energy-227.650452
Nuclear repulsion energy116.718052
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' 3585 3455 24.44      
2 A' 3020 2910 75.89      
3 A' 2998 2889 10.45      
4 A' 1666 1605 53.45      
5 A' 1552 1495 9.29      
6 A' 1452 1399 69.69      
7 A' 1419 1367 12.35      
8 A' 1312 1265 61.89      
9 A' 1065 1026 32.61      
10 A' 867 835 53.57      
11 A' 739 712 13.07      
12 A' 304 293 21.11      
13 A" 3033 2923 27.77      
14 A" 1233 1188 6.13      
15 A" 1128 1087 0.33      
16 A" 777 748 0.01      
17 A" 340 327 132.02      
18 A" 103 99 34.18      

Unscaled Zero Point Vibrational Energy (zpe) 13295.2 cm-1
Scaled (by 0.9636) Zero Point Vibrational Energy (zpe) 12811.2 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
0.57673 0.21099 0.15915

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 0.959 0.000
C2 0.958 -0.227 0.000
O3 -1.389 0.525 0.000
O4 0.544 -1.411 0.000
H5 -1.415 -0.458 0.000
H6 0.194 1.582 0.892
H7 0.194 1.582 -0.892
H8 2.039 -0.002 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C11.52461.45492.43182.00281.10511.10512.2545
C21.52462.46431.25432.38442.15682.15681.1048
O31.45492.46432.73600.98362.10172.10173.4685
O42.43181.25432.73602.17903.14273.14272.0548
H52.00282.38440.98362.17902.74712.74713.4848
H61.10512.15682.10173.14272.74711.78412.5903
H71.10512.15682.10173.14272.74711.78412.5903
H82.25451.10483.46852.05483.48482.59032.5903

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 121.813 C1 C2 H8 117.159
C1 O3 H5 108.897 C2 C1 O3 111.577
C2 C1 H6 109.158 C2 C1 H7 109.158
O3 C1 H6 109.607 O3 C1 H7 109.607
O4 C2 H8 121.028 H6 C1 H7 107.647
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability