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: QCISD/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-228.454695
Energy at 298.15K-228.459585
HF Energy-227.784360
Nuclear repulsion energy119.083768
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/cc-pVDZ
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' 3774 3620 64.44      
2 A' 3021 2898 69.12      
3 A' 2987 2866 63.53      
4 A' 1815 1741 114.36      
5 A' 1501 1440 25.54      
6 A' 1479 1419 59.71      
7 A' 1401 1344 18.19      
8 A' 1325 1272 31.09      
9 A' 1162 1115 66.29      
10 A' 891 855 42.46      
11 A' 769 738 12.34      
12 A' 300 287 22.70      
13 A" 3048 2925 38.45      
14 A" 1257 1206 1.66      
15 A" 1119 1073 0.56      
16 A" 745 715 0.42      
17 A" 389 374 76.98      
18 A" 174 167 7.69      

Unscaled Zero Point Vibrational Energy (zpe) 13578.4 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 13027.1 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/cc-pVDZ
ABC
0.60772 0.21802 0.16549

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.943 0.000
C2 0.929 -0.259 0.000
O3 -1.347 0.553 0.000
O4 0.499 -1.397 0.000
H5 -1.317 -0.418 0.000
H6 0.250 1.559 0.890
H7 0.250 1.559 -0.890
H8 2.026 -0.044 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C11.51871.40202.39251.89431.11141.11142.2532
C21.51872.41581.21672.25192.13502.13501.1179
O31.40202.41582.68470.97142.08682.08683.4247
O42.39251.21672.68472.06343.09743.09742.0403
H51.89432.25190.97142.06342.67582.67583.3642
H61.11142.13502.08683.09742.67581.78082.5524
H71.11142.13502.08683.09742.67581.78082.5524
H82.25321.11793.42472.04033.36422.55242.5524

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 121.612 C1 C2 H8 116.604
C1 O3 H5 104.440 C2 C1 O3 111.543
C2 C1 H6 107.528 C2 C1 H7 107.528
O3 C1 H6 111.740 O3 C1 H7 111.740
O4 C2 H8 121.784 H6 C1 H7 106.486
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability