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

using model chemistry: mPW1PW91/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-303.045571
Energy at 298.15K-303.048743
HF Energy-303.045571
Nuclear repulsion energy163.491157
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/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3688 3534 106.34      
2 A' 3044 2917 35.50      
3 A' 1874 1795 223.64      
4 A' 1824 1748 119.72      
5 A' 1404 1345 318.42      
6 A' 1340 1284 16.15      
7 A' 1232 1180 13.16      
8 A' 902 864 46.05      
9 A' 687 659 14.65      
10 A' 504 483 6.22      
11 A' 277 265 35.75      
12 A" 1023 981 3.88      
13 A" 705 675 78.38      
14 A" 584 560 25.50      
15 A" 171 164 28.71      

Unscaled Zero Point Vibrational Energy (zpe) 9628.6 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 9227.1 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/aug-cc-pVDZ
ABC
0.36910 0.15411 0.10872

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.747 -0.753 0.000
C2 0.000 0.580 0.000
O3 -0.141 -1.796 0.000
O4 -0.580 1.632 0.000
O5 1.323 0.443 0.000
H6 -1.851 -0.680 0.000
H7 1.512 -0.513 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7
C11.52801.20592.39132.39101.10702.2713
C21.52802.38001.20151.33052.23911.8651
O31.20592.38003.45622.67562.04222.0928
O42.39131.20153.45622.24412.63852.9956
O52.39101.33052.67562.24413.36740.9740
H61.10702.23912.04222.63853.36743.3672
H72.27131.86512.09282.99560.97403.3672

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 121.897 C1 C2 O5 113.360
C2 C1 O3 120.596 C2 C1 H6 115.447
C2 O5 H7 107.046 O3 C1 H6 123.957
O4 C2 O5 124.743
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.612      
2 C 0.728      
3 O -0.476      
4 O -0.485      
5 O -0.454      
6 H -0.138      
7 H 0.213      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.334 -1.911 0.000 1.940
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.624 0.358 0.000
y 0.358 -36.307 0.000
z 0.000 0.000 -26.604
Traceless
 xyz
x 5.832 0.358 0.000
y 0.358 -10.194 0.000
z 0.000 0.000 4.362
Polar
3z2-r28.723
x2-y210.684
xy0.358
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.679 -0.601 0.000
y -0.601 6.420 0.000
z 0.000 0.000 3.374


<r2> (average value of r2) Å2
<r2> 99.186
(<r2>)1/2 9.959