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

using model chemistry: CID/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 CID/3-21G*
 hartrees
Energy at 0K-300.250470
Energy at 298.15K-300.253747
HF Energy-299.775559
Nuclear repulsion energy161.917763
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 CID/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' 3639 3386 75.54      
2 A' 3175 2955 29.58      
3 A' 1911 1778 120.57      
4 A' 1779 1655 48.41      
5 A' 1422 1323 25.81      
6 A' 1376 1280 384.14      
7 A' 1239 1153 2.40      
8 A' 873 812 53.27      
9 A' 704 655 15.58      
10 A' 520 484 4.19      
11 A' 298 277 37.06      
12 A" 1078 1003 7.62      
13 A" 665 619 103.44      
14 A" 608 566 89.90      
15 A" 227 211 20.93      

Unscaled Zero Point Vibrational Energy (zpe) 9756.2 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 9078.2 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 CID/3-21G*
ABC
0.36115 0.15223 0.10709

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.779 -0.729 0.000
C2 0.000 0.584 0.000
O3 -0.184 -1.802 0.000
O4 -0.538 1.670 0.000
O5 1.346 0.389 0.000
H6 -1.862 -0.615 0.000
H7 1.541 -0.577 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7
C11.52641.22712.41052.40111.08832.3256
C21.52642.39271.21171.36012.21411.9298
O31.22712.39273.48942.67192.05502.1157
O42.41051.21173.48942.27812.64043.0614
O52.40111.36012.67192.27813.36090.9855
H61.08832.21412.05502.64043.36093.4032
H72.32561.92982.11573.06140.98553.4032

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 122.958 C1 C2 O5 112.444
C2 C1 O3 120.287 C2 C1 H6 114.689
C2 O5 H7 109.688 O3 C1 H6 125.023
O4 C2 O5 124.598
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability