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

using model chemistry: QCISD/6-31G(2df,p)

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(2df,p)
 hartrees
Energy at 0K-228.567210
Energy at 298.15K-228.572140
HF Energy-227.790357
Nuclear repulsion energy119.777184
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(2df,p)
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' 3812 3612 63.28      
2 A' 3044 2884 53.64      
3 A' 3015 2856 44.91      
4 A' 1825 1729 105.25      
5 A' 1528 1448 11.34      
6 A' 1490 1412 70.10      
7 A' 1422 1348 16.91      
8 A' 1339 1269 45.24      
9 A' 1169 1107 69.11      
10 A' 890 843 40.36      
11 A' 772 732 11.96      
12 A' 308 292 21.24      
13 A" 3069 2908 23.79      
14 A" 1275 1208 1.57      
15 A" 1133 1073 0.32      
16 A" 748 709 0.16      
17 A" 396 376 80.86      
18 A" 188 178 5.80      

Unscaled Zero Point Vibrational Energy (zpe) 13711.5 cm-1
Scaled (by 0.9474) Zero Point Vibrational Energy (zpe) 12990.3 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 QCISD/6-31G(2df,p)
ABC
0.61440 0.22053 0.16733

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 -0.933 0.000
C2 -0.928 0.275 0.000
O3 1.350 -0.580 0.000
O4 -0.510 1.404 0.000
H5 1.344 0.380 0.000
H6 -0.241 -1.540 0.883
H7 -0.241 -1.540 -0.883
H8 -2.013 0.057 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C11.52351.39492.39271.87901.09791.09792.2439
C21.52352.43281.20442.27462.13212.13211.1071
O31.39492.43282.71970.96002.05652.05653.4229
O42.39271.20442.71972.11853.08573.08572.0189
H51.87902.27460.96002.11852.64122.64123.3731
H61.09792.13212.05653.08572.64121.76552.5442
H71.09792.13212.05653.08572.64121.76552.5442
H82.24391.10713.42292.01893.37312.54422.5442

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 122.163 C1 C2 H8 116.181
C1 O3 H5 104.337 C2 C1 O3 112.869
C2 C1 H6 107.745 C2 C1 H7 107.745
O3 C1 H6 110.606 O3 C1 H7 110.606
O4 C2 H8 121.655 H6 C1 H7 107.035
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability