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

using model chemistry: mPW1PW91/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 mPW1PW91/STO-3G
 hartrees
Energy at 0K-298.916433
Energy at 298.15K-298.919517
HF Energy-298.916433
Nuclear repulsion energy159.882717
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/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' 3370 2962 84.99      
2 A' 3324 2922 21.22      
3 A' 1930 1697 44.89      
4 A' 1808 1589 13.39      
5 A' 1663 1462 190.32      
6 A' 1365 1200 17.94      
7 A' 1206 1060 18.19      
8 A' 872 766 5.28      
9 A' 698 614 9.56      
10 A' 481 423 0.80      
11 A' 363 319 34.63      
12 A" 996 875 70.08      
13 A" 915 804 0.87      
14 A" 560 492 2.88      
15 A" 223 196 6.94      

Unscaled Zero Point Vibrational Energy (zpe) 9887.5 cm-1
Scaled (by 0.8789) Zero Point Vibrational Energy (zpe) 8690.1 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 mPW1PW91/STO-3G
ABC
0.37021 0.14741 0.10543

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.851 -0.711 0.000
C2 0.000 0.622 0.000
O3 -0.169 -1.768 0.000
O4 -0.429 1.792 0.000
O5 1.335 0.228 0.000
H6 -1.968 -0.680 0.000
H7 1.174 -0.807 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7
C11.58151.25782.53842.37921.11712.0270
C21.58152.39591.24631.39252.35951.8497
O31.25782.39593.56952.49882.10191.6509
O42.53841.24633.56952.35842.91193.0541
O52.37921.39252.49882.35843.42541.0474
H61.11712.35952.10192.91193.42543.1439
H72.02701.84971.65093.05411.04743.1439

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 127.307 C1 C2 O5 106.084
C2 C1 O3 114.620 C2 C1 H6 120.973
C2 O5 H7 97.589 O3 C1 H6 124.408
O4 C2 O5 126.609
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.071      
2 C 0.191      
3 O -0.155      
4 O -0.195      
5 O -0.231      
6 H 0.104      
7 H 0.214      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.106 -1.941 0.000 2.234
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.427 0.189 0.000
y 0.189 -30.102 0.000
z 0.000 0.000 -23.617
Traceless
 xyz
x 2.433 0.189 0.000
y 0.189 -6.080 0.000
z 0.000 0.000 3.647
Polar
3z2-r27.295
x2-y25.675
xy0.189
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.804 -0.581 0.000
y -0.581 3.732 0.000
z 0.000 0.000 0.733


<r2> (average value of r2) Å2
<r2> 99.412
(<r2>)1/2 9.971