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All results from a given calculation for CH3CH2COOH (Propanoic Acid)

using model chemistry: MP2/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-311G**
 hartrees
Energy at 0K-267.752879
Energy at 298.15K-267.760087
HF Energy-266.920039
Nuclear repulsion energy178.362896
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 MP2/6-311G**
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' 3819 3629 64.92      
2 A' 3184 3025 18.54      
3 A' 3098 2943 9.73      
4 A' 3093 2939 17.38      
5 A' 1841 1749 220.32      
6 A' 1523 1447 11.26      
7 A' 1482 1408 11.93      
8 A' 1445 1373 15.14      
9 A' 1428 1356 55.56      
10 A' 1325 1259 0.41      
11 A' 1189 1129 238.32      
12 A' 1109 1054 69.33      
13 A' 1030 979 1.87      
14 A' 837 795 9.36      
15 A' 621 590 20.91      
16 A' 473 450 20.53      
17 A' 257 244 2.22      
18 A" 3189 3030 19.35      
19 A" 3143 2987 2.91      
20 A" 1518 1442 7.21      
21 A" 1298 1233 0.00      
22 A" 1124 1068 0.24      
23 A" 823 782 12.77      
24 A" 652 620 87.80      
25 A" 518 492 28.84      
26 A" 230 219 0.00      
27 A" 46 43 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 20146.4 cm-1
Scaled (by 0.9502) Zero Point Vibrational Energy (zpe) 19143.1 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 MP2/6-311G**
ABC
0.33738 0.12800 0.09608

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.570 0.000
C2 -0.606 -0.812 0.000
C3 0.453 -1.908 0.000
O4 -0.962 1.527 0.000
O5 1.181 0.828 0.000
H6 -1.260 -0.883 0.875
H7 -1.260 -0.883 -0.875
H8 -0.017 -2.894 0.000
H9 1.093 -1.824 -0.881
H10 1.093 -1.824 0.881
H11 -0.482 2.366 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9 H10 H11
C11.50942.51901.35671.20882.11312.11313.46422.77572.77571.8592
C21.50941.52362.36602.42561.09511.09512.16332.16462.16463.1806
C32.51901.52363.71452.83092.18002.18001.09271.09181.09184.3746
O41.35672.36603.71452.25402.58082.58084.52064.02844.02840.9670
O51.20882.42562.83092.25403.10693.10693.91012.79642.79642.2647
H62.11311.09512.18002.58083.10691.75042.52123.08342.53443.4534
H72.11311.09512.18002.58083.10691.75042.52122.53443.08343.4534
H83.46422.16331.09274.52063.91012.52122.52121.77531.77535.2803
H92.77572.16461.09184.02842.79643.08342.53441.77531.76214.5622
H102.77572.16461.09184.02842.79642.53443.08341.77531.76214.5622
H111.85923.18064.37460.96702.26473.45343.45345.28034.56224.5622

picture of Propanoic Acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 112.303 C1 C2 H6 107.385
C1 C2 H7 107.385 C1 O4 H11 105.040
C2 C1 O4 111.169 C2 C1 O5 125.983
C2 C3 H8 110.476 C2 C3 H9 110.627
C2 C3 H10 110.627 C3 C2 H6 111.664
C3 C2 H7 111.664 O4 C1 O5 122.848
H6 C2 H7 106.102 H8 C3 H9 108.715
H8 C3 H10 108.715 H9 C3 H10 107.598
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability