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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-302.873538
Energy at 298.15K-302.876695
HF Energy-302.873538
Nuclear repulsion energy161.794025
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' 3591 3399 75.25      
2 A' 3138 2971 26.05      
3 A' 1817 1720 138.19      
4 A' 1740 1647 78.15      
5 A' 1373 1300 13.53      
6 A' 1328 1258 306.28      
7 A' 1217 1152 46.35      
8 A' 891 843 60.42      
9 A' 680 644 12.58      
10 A' 514 486 5.54      
11 A' 287 272 38.94      
12 A" 1011 957 6.13      
13 A" 677 641 146.41      
14 A" 569 538 44.28      
15 A" 186 176 30.63      

Unscaled Zero Point Vibrational Energy (zpe) 9509.4 cm-1
Scaled (by 0.9466) Zero Point Vibrational Energy (zpe) 9001.6 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
0.35876 0.15264 0.10708

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 -0.771 -0.729 0.000
C2 0.000 0.571 0.000
O3 -0.172 -1.806 0.000
O4 -0.560 1.659 0.000
O5 1.345 0.413 0.000
H6 -1.861 -0.639 0.000
H7 1.588 -0.539 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7
C11.51181.23202.39702.40441.09342.3671
C21.51182.38311.22301.35402.21981.9378
O31.23202.38313.48582.68742.05252.1688
O42.39701.22303.48582.27572.64043.0730
O52.40441.35402.68742.27573.37370.9824
H61.09342.21982.05252.64043.37373.4505
H72.36711.93782.16883.07300.98243.4505

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 122.090 C1 C2 O5 113.952
C2 C1 O3 120.234 C2 C1 H6 115.944
C2 O5 H7 111.073 O3 C1 H6 123.823
O4 C2 O5 123.958
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 0.174      
2 C 0.509      
3 O -0.379      
4 O -0.379      
5 O -0.564      
6 H 0.215      
7 H 0.423      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.568 -2.210 0.000 2.281
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.489 -0.594 0.000
y -0.594 -37.509 0.000
z 0.000 0.000 -26.382
Traceless
 xyz
x 6.457 -0.594 0.000
y -0.594 -11.573 0.000
z 0.000 0.000 5.116
Polar
3z2-r210.233
x2-y212.020
xy-0.594
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.468 -0.977 0.000
y -0.977 5.289 0.000
z 0.000 0.000 1.782


<r2> (average value of r2) Å2
<r2> 100.671
(<r2>)1/2 10.033