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: mPW1PW91/cc-pVTZ

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 mPW1PW91/cc-pVTZ
 hartrees
Energy at 0K-229.071788
Energy at 298.15K-229.076786
Nuclear repulsion energy120.294467
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 mPW1PW91/cc-pVTZ
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' 3744 3591 67.49      
2 A' 2996 2874 63.65      
3 A' 2953 2833 60.45      
4 A' 1831 1756 152.90      
5 A' 1480 1420 23.69      
6 A' 1448 1388 45.84      
7 A' 1396 1339 25.72      
8 A' 1312 1258 44.42      
9 A' 1160 1113 90.83      
10 A' 885 849 49.17      
11 A' 775 743 9.92      
12 A' 288 276 24.94      
13 A" 3013 2890 19.12      
14 A" 1258 1207 1.85      
15 A" 1112 1067 0.19      
16 A" 723 693 0.00      
17 A" 436 418 84.30      
18 A" 233 223 1.75      

Unscaled Zero Point Vibrational Energy (zpe) 13519.9 cm-1
Scaled (by 0.9592) Zero Point Vibrational Energy (zpe) 12968.3 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 mPW1PW91/cc-pVTZ
ABC
0.62252 0.22189 0.16867

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.927 0.000
C2 0.920 -0.254 0.000
O3 -1.336 0.550 0.000
O4 0.501 -1.382 0.000
H5 -1.336 -0.417 0.000
H6 0.248 1.540 0.878
H7 0.248 1.540 -0.878
H8 2.004 -0.039 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C11.49691.38812.36211.89491.09961.09962.2245
C21.49692.39451.20262.26162.10772.10771.1053
O31.38812.39452.66500.96662.06442.06443.3911
O42.36211.20262.66502.07463.06143.06142.0154
H51.89492.26160.96662.07462.66682.66683.3612
H61.09962.10772.06443.06142.66681.75642.5195
H71.09962.10772.06443.06142.66681.75642.5195
H82.22451.10533.39112.01543.36122.51952.5195

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 121.704 C1 C2 H8 116.678
C1 O3 H5 105.782 C2 C1 O3 112.137
C2 C1 H6 107.547 C2 C1 H7 107.547
O3 C1 H6 111.644 O3 C1 H7 111.644
O4 C2 H8 121.617 H6 C1 H7 106.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.103      
2 C 0.128      
3 O -0.332      
4 O -0.271      
5 H 0.207      
6 H 0.051      
7 H 0.051      
8 H 0.063      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.881 1.424 0.000 2.359
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.889 3.783 0.000
y 3.783 -25.934 0.000
z 0.000 0.000 -22.966
Traceless
 xyz
x 0.561 3.783 0.000
y 3.783 -2.506 0.000
z 0.000 0.000 1.945
Polar
3z2-r23.890
x2-y22.045
xy3.783
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.967 0.142 0.000
y 0.142 5.345 0.000
z 0.000 0.000 3.397


<r2> (average value of r2) Å2
<r2> 72.125
(<r2>)1/2 8.493