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

using model chemistry: B1B95/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/3-21G
 hartrees
Energy at 0K-301.276817
Energy at 298.15K-301.280120
HF Energy-301.276817
Nuclear repulsion energy162.512509
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 B1B95/3-21G
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' 3395 3248 75.26      
2 A' 3104 2970 34.65      
3 A' 1858 1778 118.67      
4 A' 1737 1662 44.24      
5 A' 1369 1309 119.68      
6 A' 1350 1292 265.79      
7 A' 1196 1145 1.18      
8 A' 863 826 46.57      
9 A' 687 657 11.73      
10 A' 498 476 2.78      
11 A' 305 292 39.88      
12 A" 1060 1014 7.54      
13 A" 744 712 133.57      
14 A" 606 580 24.39      
15 A" 237 226 19.27      

Unscaled Zero Point Vibrational Energy (zpe) 9504.2 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 9092.7 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 B1B95/3-21G
ABC
0.36865 0.15332 0.10828

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.781 -0.716 0.000
C2 0.000 0.590 0.000
O3 -0.176 -1.785 0.000
O4 -0.519 1.687 0.000
O5 1.333 0.348 0.000
H6 -1.868 -0.605 0.000
H7 1.453 -0.646 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7
C11.52101.22852.41732.36621.09242.2350
C21.52102.38061.21451.35422.21711.9072
O31.22852.38063.48902.61212.06281.9870
O42.41731.21453.48902.28542.65963.0553
O52.36621.35422.61212.28543.33931.0015
H61.09242.21712.06282.65963.33933.3209
H72.23501.90721.98703.05531.00153.3209

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 123.790 C1 C2 O5 110.629
C2 C1 O3 119.579 C2 C1 H6 115.079
C2 O5 H7 107.167 O3 C1 H6 125.342
O4 C2 O5 125.581
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.177      
2 C 0.618      
3 O -0.412      
4 O -0.453      
5 O -0.571      
6 H 0.248      
7 H 0.393      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.775 -2.176 0.000 2.310
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.836 -0.602 0.000
y -0.602 -35.552 0.000
z 0.000 0.000 -26.104
Traceless
 xyz
x 4.992 -0.602 0.000
y -0.602 -9.582 0.000
z 0.000 0.000 4.590
Polar
3z2-r29.180
x2-y29.716
xy-0.602
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.119 -0.818 0.000
y -0.818 4.765 0.000
z 0.000 0.000 1.476


<r2> (average value of r2) Å2
<r2> 99.255
(<r2>)1/2 9.963