return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: MP2=FULL/STO-3G

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/STO-3G
 hartrees
Energy at 0K-263.656138
Energy at 298.15K-263.662874
HF Energy-263.383462
Nuclear repulsion energy172.618472
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/STO-3G
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' 3851 3423 24.67      
2 A' 3560 3164 1.63      
3 A' 3405 3027 1.48      
4 A' 3380 3004 2.39      
5 A' 1861 1654 38.84      
6 A' 1734 1541 2.04      
7 A' 1698 1510 1.03      
8 A' 1620 1440 1.50      
9 A' 1566 1392 19.56      
10 A' 1487 1322 5.24      
11 A' 1275 1134 118.73      
12 A' 1188 1056 38.99      
13 A' 1105 982 1.47      
14 A' 859 764 5.38      
15 A' 580 516 12.93      
16 A' 434 386 14.65      
17 A' 227 201 0.38      
18 A" 3561 3165 2.19      
19 A" 3514 3124 0.65      
20 A" 1729 1536 1.35      
21 A" 1416 1259 0.11      
22 A" 1210 1075 0.04      
23 A" 875 777 4.68      
24 A" 625 556 67.21      
25 A" 515 458 3.48      
26 A" 196 174 0.00      
27 A" 34 30 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 21751.5 cm-1
Scaled (by 0.8889) Zero Point Vibrational Energy (zpe) 19334.9 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=FULL/STO-3G
ABC
0.31196 0.12039 0.08984

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.581 0.000
C2 -0.616 -0.860 0.000
C3 0.489 -1.957 0.000
O4 -1.031 1.556 0.000
O5 1.217 0.896 0.000
H6 -1.264 -0.964 0.891
H7 -1.264 -0.964 -0.891
H8 0.033 -2.961 0.000
H9 1.130 -1.864 -0.893
H10 1.130 -1.864 0.893
H11 -0.492 2.421 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9 H10 H11
C11.56642.58421.41901.25672.18592.18593.54202.83692.83691.9048
C21.56641.55742.45092.53761.10691.10692.19962.20322.20323.2827
C32.58421.55743.82752.94382.20352.20351.10321.10311.10314.4862
O41.41902.45093.82752.34222.68302.68304.64074.14234.14231.0188
O51.25672.53762.94382.34223.22623.22624.03452.90152.90152.2902
H62.18591.10692.20352.68303.22621.78182.54293.11862.55803.5842
H72.18591.10692.20352.68303.22621.78182.54292.55803.11863.5842
H83.54202.19961.10324.64074.03452.54292.54291.79051.79055.4075
H92.83692.20321.10314.14232.90153.11862.55801.79051.78604.6673
H102.83692.20321.10314.14232.90152.55803.11861.79051.78604.6673
H111.90483.28274.48621.01882.29023.58423.58425.40754.66734.6673

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 111.636 C1 C2 H6 108.488
C1 C2 H7 108.488 C1 O4 H11 101.507
C2 C1 O4 110.265 C2 C1 O5 127.680
C2 C3 H8 110.362 C2 C3 H9 110.650
C2 C3 H10 110.650 C3 C2 H6 110.450
C3 C2 H7 110.450 O4 C1 O5 122.055
H6 C2 H7 107.192 H8 C3 H9 108.498
H8 C3 H10 108.498 H9 C3 H10 108.107
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability