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: HSEh1PBE/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HSEh1PBE/TZVP
 hartrees
Energy at 0K-302.888120
Energy at 298.15K-302.891273
HF Energy-302.888120
Nuclear repulsion energy163.834068
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 HSEh1PBE/TZVP
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' 3689 3542 109.71      
2 A' 3028 2907 36.99      
3 A' 1885 1810 227.00      
4 A' 1834 1761 117.45      
5 A' 1387 1332 325.57      
6 A' 1356 1302 22.53      
7 A' 1221 1172 9.84      
8 A' 894 859 48.99      
9 A' 693 666 14.67      
10 A' 506 486 5.87      
11 A' 279 268 36.45      
12 A" 1008 968 3.22      
13 A" 691 663 90.94      
14 A" 576 553 37.31      
15 A" 168 162 29.07      

Unscaled Zero Point Vibrational Energy (zpe) 9607.5 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 9224.2 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 HSEh1PBE/TZVP
ABC
0.37041 0.15453 0.10904

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.744 -0.756 0.000
C2 0.000 0.582 0.000
O3 -0.141 -1.794 0.000
O4 -0.581 1.626 0.000
O5 1.321 0.447 0.000
H6 -1.844 -0.683 0.000
H7 1.519 -0.506 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7
C11.53081.20022.38782.38991.10212.2768
C21.53082.37951.19521.32762.23591.8677
O31.20022.37953.44812.67552.03312.1011
O42.38781.19523.44812.23752.63202.9920
O52.38991.32762.67552.23753.36040.9728
H61.10212.23592.03312.63203.36043.3674
H72.27681.86772.10112.99200.97283.3674

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 121.835 C1 C2 O5 113.272
C2 C1 O3 120.742 C2 C1 H6 115.286
C2 O5 H7 107.559 O3 C1 H6 123.972
O4 C2 O5 124.893
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.122      
2 C 0.213      
3 O -0.267      
4 O -0.263      
5 O -0.226      
6 H 0.125      
7 H 0.295      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.348 -2.018 0.000 2.048
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.693 0.108 0.000
y 0.108 -36.600 0.000
z 0.000 0.000 -26.494
Traceless
 xyz
x 5.854 0.108 0.000
y 0.108 -10.506 0.000
z 0.000 0.000 4.652
Polar
3z2-r29.304
x2-y210.907
xy0.108
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.124 -0.782 0.000
y -0.782 5.807 0.000
z 0.000 0.000 2.680


<r2> (average value of r2) Å2
<r2> 99.004
(<r2>)1/2 9.950