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All results from a given calculation for CHOCOOH (oxo acetic acid)

using model chemistry: B3PW91/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-31G
 hartrees
Energy at 0K-302.837366
Energy at 298.15K-302.840500
HF Energy-302.837366
Nuclear repulsion energy161.405141
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 B3PW91/6-31G
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' 3552 3402 68.82      
2 A' 3112 2980 29.57      
3 A' 1795 1720 133.58      
4 A' 1720 1647 72.30      
5 A' 1365 1307 11.49      
6 A' 1313 1258 313.16      
7 A' 1205 1154 35.53      
8 A' 880 842 60.44      
9 A' 675 646 12.10      
10 A' 508 487 5.34      
11 A' 284 272 38.54      
12 A" 1003 961 5.84      
13 A" 678 649 144.70      
14 A" 563 540 40.81      
15 A" 185 177 29.88      

Unscaled Zero Point Vibrational Energy (zpe) 9418.9 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 9020.5 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 B3PW91/6-31G
ABC
0.35722 0.15183 0.10654

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.773 -0.730 0.000
C2 0.000 0.573 0.000
O3 -0.175 -1.810 0.000
O4 -0.559 1.663 0.000
O5 1.349 0.413 0.000
H6 -1.865 -0.638 0.000
H7 1.587 -0.543 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7
C11.51481.23482.40302.40971.09572.3671
C21.51482.38951.22581.35812.22331.9401
O31.23482.38953.49502.69502.05672.1700
O42.40301.22583.49502.28142.64583.0784
O52.40971.35812.69502.28143.38070.9854
H61.09572.22332.05672.64583.38073.4528
H72.36711.94012.17003.07840.98543.4528

picture of oxo acetic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O4 122.168 C1 C2 O5 113.910
C2 C1 O3 120.354 C2 C1 H6 115.856
C2 O5 H7 110.759 O3 C1 H6 123.790
O4 C2 O5 123.922
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.171      
2 C 0.497      
3 O -0.372      
4 O -0.372      
5 O -0.553      
6 H 0.209      
7 H 0.419      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.549 -2.193 0.000 2.261
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.511 -0.613 0.000
y -0.613 -37.423 0.000
z 0.000 0.000 -26.381
Traceless
 xyz
x 6.391 -0.613 0.000
y -0.613 -11.476 0.000
z 0.000 0.000 5.086
Polar
3z2-r210.171
x2-y211.911
xy-0.613
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.539 -0.963 0.000
y -0.963 5.339 0.000
z 0.000 0.000 1.789


<r2> (average value of r2) Å2
<r2> 101.059
(<r2>)1/2 10.053