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

using model chemistry: MP2/CEP-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 MP2/CEP-31G*
 hartrees
Energy at 0K-52.078623
Energy at 298.15K-52.085771
HF Energy-51.369348
Nuclear repulsion energy98.602985
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/CEP-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' 3722 3533 61.62      
2 A' 3201 3039 27.54      
3 A' 3115 2958 11.26      
4 A' 3102 2945 26.59      
5 A' 1819 1727 250.75      
6 A' 1527 1450 12.84      
7 A' 1498 1422 12.00      
8 A' 1460 1386 9.47      
9 A' 1430 1358 58.53      
10 A' 1319 1252 0.71      
11 A' 1184 1124 247.19      
12 A' 1112 1055 80.67      
13 A' 1031 979 2.51      
14 A' 831 789 5.16      
15 A' 606 575 18.33      
16 A' 463 440 23.03      
17 A' 249 236 2.13      
18 A" 3211 3049 32.71      
19 A" 3177 3017 3.63      
20 A" 1523 1446 7.37      
21 A" 1308 1242 0.01      
22 A" 1134 1077 0.02      
23 A" 819 777 15.13      
24 A" 663 630 116.64      
25 A" 527 501 23.42      
26 A" 224 213 0.00      
27 A" 49 47 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 20151.6 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 19131.9 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 MP2/CEP-31G*
ABC
0.32679 0.12507 0.09365

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.572 0.000
C2 -0.615 -0.824 0.000
C3 0.458 -1.930 0.000
O4 -0.977 1.542 0.000
O5 1.202 0.845 0.000
H6 -1.271 -0.892 0.885
H7 -1.271 -0.892 -0.885
H8 -0.026 -2.922 0.000
H9 1.102 -1.849 -0.891
H10 1.102 -1.849 0.891
H11 -0.492 2.398 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9 H10 H11
C11.52592.54421.37631.23222.13162.13163.49492.80562.80561.8908
C21.52591.54092.39362.46691.10411.10412.17932.18932.18933.2244
C32.54421.54093.75692.87322.20262.20261.10391.10251.10254.4313
O41.37632.39363.75692.28732.60662.60664.56454.07614.07610.9836
O51.23222.46692.87322.28733.14893.14893.96242.83912.83912.2981
H62.13161.10412.20262.60663.14891.77072.54103.11522.55933.4948
H72.13161.10412.20262.60663.14891.77072.54102.55933.11523.4948
H83.49492.17931.10394.56453.96242.54102.54101.79431.79435.3408
H92.80562.18931.10254.07612.83913.11522.55931.79431.78144.6231
H102.80562.18931.10254.07612.83912.55933.11521.79431.78144.6231
H111.89083.22444.43130.98362.29813.49483.49485.34084.62314.6231

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 112.114 C1 C2 H6 107.202
C1 C2 H7 107.202 C1 O4 H11 105.276
C2 C1 O4 111.021 C2 C1 O5 126.548
C2 C3 H8 109.877 C2 C3 H9 110.738
C2 C3 H10 110.738 C3 C2 H6 111.697
C3 C2 H7 111.697 O4 C1 O5 122.431
H6 C2 H7 106.611 H8 C3 H9 108.824
H8 C3 H10 108.824 H9 C3 H10 107.777
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability