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

using model chemistry: QCISD/STO-3G

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/STO-3G
 hartrees
Energy at 0K-225.033525
Energy at 298.15K-225.037987
HF Energy-224.761740
Nuclear repulsion energy115.265742
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/STO-3G
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' 3634 3634 13.56      
2 A' 3248 3248 21.42      
3 A' 3236 3236 5.41      
4 A' 1745 1745 11.17      
5 A' 1674 1674 3.84      
6 A' 1655 1655 26.66      
7 A' 1432 1432 5.51      
8 A' 1400 1400 24.83      
9 A' 1154 1154 6.44      
10 A' 935 935 6.63      
11 A' 744 744 4.25      
12 A' 259 259 11.73      
13 A" 3321 3321 8.37      
14 A" 1279 1279 0.12      
15 A" 1084 1084 1.82      
16 A" 754 754 0.11      
17 A" 366 366 49.30      
18 A" 108 108 6.79      

Unscaled Zero Point Vibrational Energy (zpe) 14013.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14013.3 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/STO-3G
ABC
0.55418 0.20917 0.15650

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.988 0.000
C2 0.981 -0.247 0.000
O3 -1.399 0.528 0.000
O4 0.506 -1.424 0.000
H5 -1.248 -0.493 0.000
H6 0.208 1.621 0.904
H7 0.208 1.621 -0.904
H8 2.086 -0.027 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C11.57731.47262.46391.93671.12371.12372.3200
C21.57732.50311.26842.24292.21522.21521.1271
O31.47262.50312.72751.03202.14382.14383.5293
O42.46391.26842.72751.98633.19033.19032.1088
H51.93672.24291.03201.98632.72202.72203.3672
H61.12372.21522.14383.19032.72201.80872.6575
H71.12372.21522.14383.19032.72201.80872.6575
H82.32001.12713.52932.10883.36722.65752.6575

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 119.564 C1 C2 H8 117.182
C1 O3 H5 99.797 C2 C1 O3 110.273
C2 C1 H6 109.048 C2 C1 H7 109.048
O3 C1 H6 110.604 O3 C1 H7 110.604
O4 C2 H8 123.254 H6 C1 H7 107.190
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability