return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B3LYP/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 B3LYP/6-31G**
 hartrees
Energy at 0K-303.075079
Energy at 298.15K-303.078227
HF Energy-303.075079
Nuclear repulsion energy162.867730
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 B3LYP/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' 3652 3509 88.49      
2 A' 3025 2907 44.33      
3 A' 1876 1802 175.34      
4 A' 1811 1740 91.51      
5 A' 1393 1338 350.87      
6 A' 1353 1300 17.90      
7 A' 1225 1177 7.83      
8 A' 888 853 45.92      
9 A' 687 660 14.98      
10 A' 500 480 5.04      
11 A' 288 277 35.49      
12 A" 1000 961 2.07      
13 A" 699 672 88.28      
14 A" 566 544 32.27      
15 A" 178 171 24.99      

Unscaled Zero Point Vibrational Energy (zpe) 9569.9 cm-1
Scaled (by 0.9608) Zero Point Vibrational Energy (zpe) 9194.7 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 B3LYP/6-31G**
ABC
0.36633 0.15300 0.10792

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.751 -0.753 0.000
C2 0.000 0.584 0.000
O3 -0.144 -1.802 0.000
O4 -0.579 1.642 0.000
O5 1.330 0.436 0.000
H6 -1.852 -0.676 0.000
H7 1.509 -0.525 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7
C11.53351.21212.40092.39671.10382.2721
C21.53352.39031.20581.33772.24031.8727
O31.21212.39033.47112.68002.04602.0894
O42.40091.20583.47112.25712.64473.0089
O52.39671.33772.68002.25713.37080.9777
H61.10382.24032.04602.64473.37083.3651
H72.27211.87272.08943.00890.97773.3651

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 121.977 C1 C2 O5 113.003
C2 C1 O3 120.603 C2 C1 H6 115.343
C2 O5 H7 106.930 O3 C1 H6 124.054
O4 C2 O5 125.020
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.246      
2 C 0.548      
3 O -0.379      
4 O -0.418      
5 O -0.469      
6 H 0.130      
7 H 0.342      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.307 -1.930 0.000 1.954
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.200 -0.016 0.000
y -0.016 -35.349 0.000
z 0.000 0.000 -25.965
Traceless
 xyz
x 5.456 -0.016 0.000
y -0.016 -9.766 0.000
z 0.000 0.000 4.310
Polar
3z2-r28.620
x2-y210.149
xy-0.016
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.706 -0.707 0.000
y -0.707 5.255 0.000
z 0.000 0.000 2.110


<r2> (average value of r2) Å2
<r2> 99.339
(<r2>)1/2 9.967