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

using model chemistry: HF/CEP-121G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/CEP-121G*
 hartrees
Energy at 0K-59.232499
Energy at 298.15K-59.235775
HF Energy-59.232499
Nuclear repulsion energy88.219949
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 HF/CEP-121G*
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' 4060 3667 128.90      
2 A' 3260 2945 36.61      
3 A' 2042 1845 176.98      
4 A' 1977 1786 377.54      
5 A' 1524 1377 413.86      
6 A' 1463 1322 45.68      
7 A' 1326 1197 16.84      
8 A' 964 871 56.41      
9 A' 736 665 28.68      
10 A' 548 495 8.78      
11 A' 305 275 36.88      
12 A" 1110 1003 3.35      
13 A" 671 607 26.76      
14 A" 613 554 150.99      
15 A" 165 149 38.06      

Unscaled Zero Point Vibrational Energy (zpe) 10381.2 cm-1
Scaled (by 0.9034) Zero Point Vibrational Energy (zpe) 9378.4 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 HF/CEP-121G*
ABC
0.36845 0.15464 0.10892

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.740 -0.773 0.000
C2 0.000 0.581 0.000
O3 -0.134 -1.798 0.000
O4 -0.600 1.603 0.000
O5 1.320 0.482 0.000
H6 -1.827 -0.704 0.000
H7 1.579 -0.435 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7
C11.54261.19062.37992.41171.08982.3428
C21.54262.38271.18521.32352.23361.8772
O31.19062.38273.43282.70442.01612.1891
O42.37991.18523.43282.22302.61272.9832
O52.41171.32352.70442.22303.36310.9529
H61.08982.23362.01612.61273.36313.4165
H72.34281.87722.18912.98320.95293.4165

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 120.930 C1 C2 O5 114.375
C2 C1 O3 120.783 C2 C1 H6 115.006
C2 O5 H7 110.041 O3 C1 H6 124.211
O4 C2 O5 124.695
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.111      
2 C 0.441      
3 O -0.348      
4 O -0.351      
5 O -0.529      
6 H 0.183      
7 H 0.494      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.395 -2.127 0.000 2.164
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.175 0.155 0.000
y 0.155 -37.636 0.000
z 0.000 0.000 -26.320
Traceless
 xyz
x 6.803 0.155 0.000
y 0.155 -11.888 0.000
z 0.000 0.000 5.085
Polar
3z2-r210.170
x2-y212.461
xy0.155
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.395 -0.821 0.000
y -0.821 5.108 0.000
z 0.000 0.000 2.448


<r2> (average value of r2) Å2
<r2> 79.929
(<r2>)1/2 8.940