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

using model chemistry: MP2/SDD

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/SDD
 hartrees
Energy at 0K-267.270860
Energy at 298.15K-267.277879
HF Energy-266.760731
Nuclear repulsion energy173.461980
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/SDD
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' 3608 3482 39.54      
2 A' 3141 3032 30.97      
3 A' 3056 2950 10.58      
4 A' 3038 2933 27.21      
5 A' 1668 1610 171.85      
6 A' 1542 1488 8.93      
7 A' 1511 1459 22.83      
8 A' 1468 1417 11.17      
9 A' 1417 1368 31.61      
10 A' 1286 1242 8.40      
11 A' 1131 1092 66.84      
12 A' 1061 1024 198.90      
13 A' 1012 977 107.18      
14 A' 790 763 4.34      
15 A' 579 559 12.63      
16 A' 445 429 30.85      
17 A' 245 237 1.77      
18 A" 3149 3039 38.03      
19 A" 3111 3003 3.53      
20 A" 1537 1484 8.41      
21 A" 1299 1254 0.00      
22 A" 1156 1116 0.02      
23 A" 832 803 11.05      
24 A" 629 607 167.18      
25 A" 510 492 30.49      
26 A" 207 200 0.00      
27 A" 39 38 0.07      

Unscaled Zero Point Vibrational Energy (zpe) 19733.3 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 19048.5 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/SDD
ABC
0.31580 0.12162 0.09082

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/SDD

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.565 0.000
C2 -0.600 -0.842 0.000
C3 0.491 -1.950 0.000
O4 -1.025 1.546 0.000
O5 1.216 0.882 0.000
H6 -1.255 -0.923 0.887
H7 -1.255 -0.923 -0.887
H8 0.011 -2.945 0.000
H9 1.135 -1.868 -0.892
H10 1.135 -1.868 0.892
H11 -0.638 2.457 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9 H10 H11
C11.52982.56341.41911.25632.13892.13893.51002.82942.82941.9964
C21.52981.55602.42542.50401.10501.10502.19012.20472.20473.2990
C32.56341.55603.81152.92402.21152.21151.10371.10281.10284.5500
O41.41912.42543.81152.33742.63332.63334.60904.13784.13780.9898
O51.25632.50402.92402.33743.18533.18534.01192.89252.89252.4323
H62.13891.10502.21152.63333.18531.77392.54513.12532.56993.5481
H72.13891.10502.21152.63333.18531.77392.54512.56993.12533.5481
H83.51002.19011.10374.60904.01192.54512.54511.79331.79335.4406
H92.82942.20471.10284.13782.89253.12532.56991.79331.78314.7589
H102.82942.20471.10284.13782.89252.56993.12531.79331.78314.7589
H111.99643.29904.55000.98982.43233.54813.54815.44064.75894.7589

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 112.342 C1 C2 H6 107.442
C1 C2 H7 107.442 C1 O4 H11 110.684
C2 C1 O4 110.617 C2 C1 O5 127.721
C2 C3 H8 109.689 C2 C3 H9 110.879
C2 C3 H10 110.879 C3 C2 H6 111.288
C3 C2 H7 111.288 O4 C1 O5 121.662
H6 C2 H7 106.763 H8 C3 H9 108.721
H8 C3 H10 108.721 H9 C3 H10 107.886
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability