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

using model chemistry: MP2=FULL/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2=FULL/6-31+G**
 hartrees
Energy at 0K-302.315956
Energy at 298.15K-302.319076
HF Energy-301.491090
Nuclear repulsion energy162.169493
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 MP2=FULL/6-31+G**
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' 3721 3495 118.82      
2 A' 3139 2948 26.12      
3 A' 1821 1710 174.48      
4 A' 1733 1628 71.22      
5 A' 1393 1308 278.45      
6 A' 1377 1293 54.38      
7 A' 1226 1152 15.27      
8 A' 900 845 58.12      
9 A' 680 639 13.33      
10 A' 505 475 5.96      
11 A' 287 270 32.56      
12 A" 999 938 4.08      
13 A" 674 633 86.19      
14 A" 560 526 48.34      
15 A" 165 155 28.83      

Unscaled Zero Point Vibrational Energy (zpe) 9590.1 cm-1
Scaled (by 0.9392) Zero Point Vibrational Energy (zpe) 9007.1 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 MP2=FULL/6-31+G**
ABC
0.36245 0.15198 0.10708

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.754 -0.748 0.000
C2 0.000 0.577 0.000
O3 -0.148 -1.814 0.000
O4 -0.585 1.644 0.000
O5 1.336 0.446 0.000
H6 -1.846 -0.674 0.000
H7 1.537 -0.509 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7
C11.52461.22582.39792.40691.09522.3031
C21.52462.39521.21651.34272.23031.8823
O31.22582.39523.48492.70292.04582.1304
O42.39791.21653.48492.26402.63883.0230
O52.40691.34272.70292.26403.37380.9760
H61.09522.23032.04582.63883.37383.3874
H72.30311.88232.13043.02300.97603.3874

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 121.642 C1 C2 O5 114.011
C2 C1 O3 120.734 C2 C1 H6 115.739
C2 O5 H7 107.487 O3 C1 H6 123.527
O4 C2 O5 124.346
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability