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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-300.253756
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 3390 75.54      
2 A' 3175 2958 29.58      
3 A' 1911 1780 120.57      
4 A' 1779 1657 48.41      
5 A' 1422 1325 25.81      
6 A' 1376 1282 384.14      
7 A' 1239 1154 2.40      
8 A' 873 813 53.27      
9 A' 704 656 15.58      
10 A' 520 484 4.19      
11 A' 298 278 37.06      
12 A" 1078 1004 7.62      
13 A" 665 620 103.44      
14 A" 608 567 89.90      
15 A" 227 211 20.93      

Unscaled Zero Point Vibrational Energy (zpe) 9756.2 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 9088.9 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