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

using model chemistry: mPW1PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-31+G**
 hartrees
Energy at 0K-303.010130
Energy at 298.15K-303.013274
HF Energy-303.010130
Nuclear repulsion energy163.383860
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 mPW1PW91/6-31+G**
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' 3720 3541 112.15      
2 A' 3068 2921 31.96      
3 A' 1891 1800 229.92      
4 A' 1840 1751 127.28      
5 A' 1399 1332 325.25      
6 A' 1355 1289 21.12      
7 A' 1228 1169 21.56      
8 A' 903 860 48.62      
9 A' 689 655 14.95      
10 A' 505 481 6.29      
11 A' 281 268 36.32      
12 A" 1013 964 4.19      
13 A" 693 659 93.47      
14 A" 575 547 37.88      
15 A" 168 160 31.05      

Unscaled Zero Point Vibrational Energy (zpe) 9664.5 cm-1
Scaled (by 0.9518) Zero Point Vibrational Energy (zpe) 9198.7 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 mPW1PW91/6-31+G**
ABC
0.36806 0.15398 0.10856

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.747 -0.756 0.000
C2 0.000 0.580 0.000
O3 -0.137 -1.798 0.000
O4 -0.586 1.629 0.000
O5 1.323 0.449 0.000
H6 -1.846 -0.686 0.000
H7 1.531 -0.502 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7
C11.52991.20732.39072.39481.10142.2914
C21.52992.38161.20251.32932.23801.8741
O31.20732.38163.45682.68012.03862.1125
O42.39071.20253.45682.24432.63593.0039
O52.39481.32932.68012.24433.36600.9736
H61.10142.23802.03862.63593.36603.3815
H72.29141.87412.11253.00390.97363.3815

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 121.618 C1 C2 O5 113.588
C2 C1 O3 120.479 C2 C1 H6 115.575
C2 O5 H7 107.946 O3 C1 H6 123.946
O4 C2 O5 124.794
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.260      
2 C 0.360      
3 O -0.358      
4 O -0.405      
5 O -0.420      
6 H 0.187      
7 H 0.376      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.352 -2.029 0.000 2.060
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.594 0.128 0.000
y 0.128 -36.848 0.000
z 0.000 0.000 -26.688
Traceless
 xyz
x 6.175 0.128 0.000
y 0.128 -10.707 0.000
z 0.000 0.000 4.533
Polar
3z2-r29.065
x2-y211.255
xy0.128
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.322 -0.765 0.000
y -0.765 6.154 0.000
z 0.000 0.000 2.867


<r2> (average value of r2) Å2
<r2> 99.437
(<r2>)1/2 9.972