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

using model chemistry: HF/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/6-31G
 hartrees
Energy at 0K-266.721084
Energy at 298.15K-266.728518
HF Energy-266.721084
Nuclear repulsion energy178.511215
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 HF/6-31G
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' 3993 3605 94.17      
2 A' 3281 2962 28.53      
3 A' 3215 2903 3.01      
4 A' 3208 2897 32.32      
5 A' 1919 1733 317.00      
6 A' 1656 1495 12.21      
7 A' 1626 1468 21.54      
8 A' 1592 1437 7.95      
9 A' 1555 1404 65.08      
10 A' 1432 1293 28.12      
11 A' 1263 1140 251.41      
12 A' 1198 1082 97.57      
13 A' 1103 996 10.12      
14 A' 882 796 4.14      
15 A' 662 597 33.08      
16 A' 500 452 30.90      
17 A' 274 247 3.30      
18 A" 3293 2973 29.18      
19 A" 3248 2933 2.47      
20 A" 1652 1491 7.42      
21 A" 1417 1279 0.30      
22 A" 1249 1127 1.67      
23 A" 904 816 25.49      
24 A" 690 623 193.65      
25 A" 567 512 44.01      
26 A" 220 199 0.01      
27 A" 66 60 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 21331.1 cm-1
Scaled (by 0.9029) Zero Point Vibrational Energy (zpe) 19259.8 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 HF/6-31G
ABC
0.34092 0.12715 0.09582

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.563 0.000
C2 -0.596 -0.809 0.000
C3 0.451 -1.917 0.000
O4 -0.952 1.527 0.000
O5 1.180 0.838 0.000
H6 -1.246 -0.881 0.865
H7 -1.246 -0.881 -0.865
H8 -0.032 -2.886 0.000
H9 1.088 -1.854 -0.873
H10 1.088 -1.854 0.873
H11 -0.601 2.415 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9 H10 H11
C11.49622.52101.35501.21132.09432.09433.44942.79032.79031.9466
C21.49621.52462.36342.42231.08481.08482.15202.16512.16513.2239
C32.52101.52463.71932.85022.16902.16901.08301.08201.08204.4578
O41.35502.36343.71932.24032.57542.57544.50814.04394.04390.9545
O51.21132.42232.85022.24033.09653.09653.91682.83162.83162.3780
H62.09431.08482.16902.57543.09651.73092.49893.06842.52853.4676
H72.09431.08482.16902.57543.09651.73092.49892.52853.06843.4676
H83.44942.15201.08304.50813.91682.49892.49891.75561.75565.3312
H92.79032.16511.08204.04392.83163.06842.52851.75561.74564.6725
H102.79032.16511.08204.04392.83162.52853.06841.75561.74564.6725
H111.94663.22394.45780.95452.37803.46763.46765.33124.67254.6725

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 113.134 C1 C2 H6 107.404
C1 C2 H7 107.404 C1 O4 H11 113.763
C2 C1 O4 111.877 C2 C1 O5 126.615
C2 C3 H8 110.086 C2 C3 H9 111.186
C2 C3 H10 111.186 C3 C2 H6 111.339
C3 C2 H7 111.339 O4 C1 O5 121.508
H6 C2 H7 105.843 H8 C3 H9 108.366
H8 C3 H10 108.366 H9 C3 H10 107.543
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.751      
2 C -0.394      
3 C -0.444      
4 O -0.733      
5 O -0.555      
6 H 0.211      
7 H 0.211      
8 H 0.159      
9 H 0.178      
10 H 0.178      
11 H 0.438      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.736 -0.528 0.000 1.814
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -36.957 -0.735 0.000
y -0.735 -24.822 0.000
z 0.000 0.000 -29.577
Traceless
 xyz
x -9.757 -0.735 0.000
y -0.735 8.445 0.000
z 0.000 0.000 1.312
Polar
3z2-r22.625
x2-y2-12.135
xy-0.735
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.543 -0.014 0.000
y -0.014 5.499 0.000
z 0.000 0.000 3.784


<r2> (average value of r2) Å2
<r2> 124.362
(<r2>)1/2 11.152