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

using model chemistry: QCISD/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 QCISD/6-31G
 hartrees
Energy at 0K-301.887259
Energy at 298.15K-301.890280
HF Energy-301.313462
Nuclear repulsion energy159.273305
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 QCISD/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' 3569 3439 64.64      
2 A' 3075 2963 26.50      
3 A' 1752 1689 96.50      
4 A' 1644 1584 67.26      
5 A' 1360 1311 12.72      
6 A' 1308 1260 329.92      
7 A' 1206 1163 1.56      
8 A' 846 816 64.31      
9 A' 660 636 13.99      
10 A' 504 486 5.79      
11 A' 287 277 33.14      
12 A" 947 912 5.47      
13 A" 614 592 131.13      
14 A" 526 507 74.40      
15 A" 168 162 27.90      

Unscaled Zero Point Vibrational Energy (zpe) 9233.4 cm-1
Scaled (by 0.9636) Zero Point Vibrational Energy (zpe) 8897.3 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 QCISD/6-31G
ABC
0.34557 0.14797 0.10361

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.788 -0.738 0.000
C2 0.000 0.575 0.000
O3 -0.189 -1.837 0.000
O4 -0.563 1.677 0.000
O5 1.374 0.429 0.000
H6 -1.885 -0.644 0.000
H7 1.634 -0.522 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7
C11.53171.25192.42602.45751.10052.4320
C21.53172.41971.23791.38222.24461.9679
O31.25192.41973.53452.75302.07362.2481
O42.42601.23793.53452.30522.67113.1087
O52.45751.38222.75302.30523.43120.9852
H61.10052.24462.07362.67113.43123.5209
H72.43201.96792.24813.10870.98523.5209

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 121.956 C1 C2 O5 114.901
C2 C1 O3 120.419 C2 C1 H6 116.063
C2 O5 H7 111.350 O3 C1 H6 123.518
O4 C2 O5 123.143
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability