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

using model chemistry: PBEPBE/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/STO-3G
 hartrees
Energy at 0K-298.663941
Energy at 298.15K-298.666979
HF Energy-298.663941
Nuclear repulsion energy158.213176
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 PBEPBE/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' 3191 2915 5.51      
2 A' 2913 2661 174.62      
3 A' 1840 1681 71.09      
4 A' 1724 1575 62.12      
5 A' 1618 1479 66.76      
6 A' 1300 1188 13.01      
7 A' 1089 995 15.28      
8 A' 804 735 3.01      
9 A' 676 618 7.12      
10 A' 497 454 11.83      
11 A' 403 368 20.22      
12 A" 1085 992 53.92      
13 A" 830 758 1.81      
14 A" 529 483 0.37      
15 A" 219 201 4.59      

Unscaled Zero Point Vibrational Energy (zpe) 9359.1 cm-1
Scaled (by 0.9136) Zero Point Vibrational Energy (zpe) 8550.5 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 PBEPBE/STO-3G
ABC
0.36735 0.14397 0.10343

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.864 -0.709 0.000
C2 0.000 0.638 0.000
O3 -0.158 -1.778 0.000
O4 -0.423 1.829 0.000
O5 1.339 0.199 0.000
H6 -1.992 -0.707 0.000
H7 1.105 -0.864 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7
C11.60051.28122.57632.38341.12741.9757
C21.60052.42111.26381.40962.40351.8650
O31.28122.42113.61672.47982.12351.5591
O42.57631.26383.61672.40062.98243.0965
O52.38341.40962.47982.40063.45221.0884
H61.12742.40352.12352.98243.45223.1010
H71.97571.86501.55913.09651.08843.1010

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 127.778 C1 C2 O5 104.527
C2 C1 O3 113.856 C2 C1 H6 122.590
C2 O5 H7 95.735 O3 C1 H6 123.554
O4 C2 O5 127.695
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.057      
2 C 0.145      
3 O -0.127      
4 O -0.175      
5 O -0.193      
6 H 0.104      
7 H 0.190      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.109 -1.972 0.000 2.263
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.276 0.403 0.000
y 0.403 -29.478 0.000
z 0.000 0.000 -23.714
Traceless
 xyz
x 2.320 0.403 0.000
y 0.403 -5.483 0.000
z 0.000 0.000 3.163
Polar
3z2-r26.326
x2-y25.203
xy0.403
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.035 -0.458 0.000
y -0.458 3.933 0.000
z 0.000 0.000 0.766


<r2> (average value of r2) Å2
<r2> 100.854
(<r2>)1/2 10.043