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

using model chemistry: LSDA/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 LSDA/3-21G
 hartrees
Energy at 0K-299.860186
Energy at 298.15K-299.863555
HF Energy-299.860186
Nuclear repulsion energy162.884183
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 LSDA/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' 2990 2941 40.68      
2 A' 2981 2932 94.95      
3 A' 1811 1782 96.39      
4 A' 1674 1647 22.79      
5 A' 1378 1355 361.34      
6 A' 1290 1269 0.95      
7 A' 1161 1142 3.57      
8 A' 864 850 42.40      
9 A' 694 683 8.14      
10 A' 489 481 2.25      
11 A' 333 328 45.87      
12 A" 1022 1005 10.49      
13 A" 869 855 115.09      
14 A" 601 591 7.60      
15 A" 245 241 14.02      

Unscaled Zero Point Vibrational Energy (zpe) 9201.4 cm-1
Scaled (by 0.9836) Zero Point Vibrational Energy (zpe) 9050.5 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 LSDA/3-21G
ABC
0.37666 0.15424 0.10943

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.785 -0.697 0.000
C2 0.000 0.596 0.000
O3 -0.161 -1.766 0.000
O4 -0.500 1.711 0.000
O5 1.318 0.298 0.000
H6 -1.888 -0.597 0.000
H7 1.335 -0.738 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7
C11.51271.23782.42422.32641.10722.1206
C21.51272.36751.22121.35172.23341.8878
O31.23782.36753.49282.53882.08491.8151
O42.42421.22123.49282.30262.69313.0600
O52.32641.35172.53882.30263.32851.0359
H61.10722.23342.08492.69313.32853.2260
H72.12061.88781.81513.06001.03593.2260

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 124.583 C1 C2 O5 108.490
C2 C1 O3 118.465 C2 C1 H6 116.107
C2 O5 H7 103.708 O3 C1 H6 125.428
O4 C2 O5 126.927
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.121      
2 C 0.515      
3 O -0.356      
4 O -0.395      
5 O -0.500      
6 H 0.247      
7 H 0.367      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.919 -2.200 0.000 2.384
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.151 -0.424 0.000
y -0.424 -34.741 0.000
z 0.000 0.000 -26.256
Traceless
 xyz
x 4.347 -0.424 0.000
y -0.424 -8.537 0.000
z 0.000 0.000 4.190
Polar
3z2-r28.380
x2-y28.590
xy-0.424
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.393 -0.710 0.000
y -0.710 4.890 0.000
z 0.000 0.000 1.513


<r2> (average value of r2) Å2
<r2> 98.303
(<r2>)1/2 9.915