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

using model chemistry: mPW1PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-31G*
 hartrees
Energy at 0K-302.989092
Energy at 298.15K-302.992268
HF Energy-302.989092
Nuclear repulsion energy163.596024
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 mPW1PW91/6-31G*
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' 3644 3456 98.90      
2 A' 3074 2915 42.53      
3 A' 1917 1818 183.89      
4 A' 1850 1754 103.61      
5 A' 1430 1356 361.44      
6 A' 1365 1295 16.31      
7 A' 1250 1185 12.28      
8 A' 908 861 44.68      
9 A' 694 658 15.85      
10 A' 506 480 5.16      
11 A' 292 277 36.73      
12 A" 1011 958 2.92      
13 A" 718 681 96.20      
14 A" 574 545 32.12      
15 A" 179 170 26.12      

Unscaled Zero Point Vibrational Energy (zpe) 9705.7 cm-1
Scaled (by 0.9483) Zero Point Vibrational Energy (zpe) 9203.9 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 mPW1PW91/6-31G*
ABC
0.37035 0.15440 0.10897

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.748 -0.749 0.000
C2 0.000 0.583 0.000
O3 -0.139 -1.792 0.000
O4 -0.576 1.638 0.000
O5 1.321 0.430 0.000
H6 -1.848 -0.679 0.000
H7 1.494 -0.532 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7
C11.52851.20742.39312.38201.10182.2526
C21.52852.37931.20131.32992.23781.8641
O31.20742.37933.45712.65902.03932.0624
O42.39311.20133.45712.24872.64262.9985
O52.38201.32992.65902.24873.35750.9776
H61.10182.23782.03932.64263.35753.3448
H72.25261.86412.06242.99850.97763.3448

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 122.029 C1 C2 O5 112.707
C2 C1 O3 120.383 C2 C1 H6 115.644
C2 O5 H7 106.778 O3 C1 H6 123.973
O4 C2 O5 125.264
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.167      
2 C 0.568      
3 O -0.380      
4 O -0.430      
5 O -0.575      
6 H 0.200      
7 H 0.451      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.355 -1.981 0.000 2.012
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.096 -0.032 0.000
y -0.032 -35.288 0.000
z 0.000 0.000 -25.977
Traceless
 xyz
x 5.537 -0.032 0.000
y -0.032 -9.751 0.000
z 0.000 0.000 4.215
Polar
3z2-r28.429
x2-y210.192
xy-0.032
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.605 -0.710 0.000
y -0.710 5.173 0.000
z 0.000 0.000 2.097


<r2> (average value of r2) Å2
<r2> 98.532
(<r2>)1/2 9.926