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

using model chemistry: PBEPBE/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/6-31G(2df,p)
 hartrees
Energy at 0K-268.104781
Energy at 298.15K-268.111732
HF Energy-268.104781
Nuclear repulsion energy177.312447
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 PBEPBE/6-31G(2df,p)
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' 3631 3594 31.62      
2 A' 3076 3044 16.85      
3 A' 2995 2964 17.94      
4 A' 2981 2950 11.36      
5 A' 1785 1767 214.21      
6 A' 1450 1435 9.90      
7 A' 1403 1389 13.73      
8 A' 1363 1349 5.90      
9 A' 1360 1346 42.65      
10 A' 1267 1254 0.49      
11 A' 1129 1118 192.06      
12 A' 1055 1044 63.94      
13 A' 985 975 4.55      
14 A' 796 788 11.62      
15 A' 590 584 16.91      
16 A' 451 446 18.87      
17 A' 240 238 2.81      
18 A" 3078 3047 15.81      
19 A" 3015 2984 3.64      
20 A" 1444 1429 5.72      
21 A" 1232 1220 0.06      
22 A" 1065 1054 0.14      
23 A" 783 775 18.09      
24 A" 661 654 71.20      
25 A" 506 501 17.31      
26 A" 193 191 0.01      
27 A" 22 21 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 19278.3 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 19079.7 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 PBEPBE/6-31G(2df,p)
ABC
0.33364 0.12648 0.09495

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.573 0.000
C2 -0.603 -0.818 0.000
C3 0.456 -1.918 0.000
O4 -0.972 1.532 0.000
O5 1.186 0.839 0.000
H6 -1.271 -0.892 0.876
H7 -1.271 -0.892 -0.876
H8 -0.017 -2.912 0.000
H9 1.104 -1.840 -0.886
H10 1.104 -1.840 0.886
H11 -0.484 2.380 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9 H10 H11
C11.51602.53311.36501.21552.12862.12863.48542.79822.79821.8708
C21.51601.52722.37862.43831.10471.10472.17462.17802.17803.2004
C32.53311.52723.73412.85282.19192.19191.10071.10041.10044.4004
O41.36502.37863.73412.26602.59502.59504.54544.05794.05790.9787
O51.21552.43832.85282.26603.13103.13103.93982.82372.82372.2722
H62.12861.10472.19192.59503.13101.75282.53383.10592.55753.4781
H72.12861.10472.19192.59503.13101.75282.53382.55753.10593.4781
H83.48542.17461.10074.54543.93982.53382.53381.78631.78635.3130
H92.79822.17801.10044.05792.82373.10592.55751.78631.77174.5958
H102.79822.17801.10044.05792.82372.55753.10591.78631.77174.5958
H111.87083.20044.40040.97872.27223.47813.47815.31304.59584.5958

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 112.689 C1 C2 H6 107.592
C1 C2 H7 107.592 C1 O4 H11 104.717
C2 C1 O4 111.194 C2 C1 O5 126.071
C2 C3 H8 110.638 C2 C3 H9 110.930
C2 C3 H10 110.930 C3 C2 H6 111.775
C3 C2 H7 111.775 O4 C1 O5 122.735
H6 C2 H7 104.999 H8 C3 H9 108.499
H8 C3 H10 108.499 H9 C3 H10 107.229
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.386      
2 C -0.319      
3 C -0.405      
4 O -0.351      
5 O -0.312      
6 H 0.147      
7 H 0.147      
8 H 0.125      
9 H 0.145      
10 H 0.145      
11 H 0.292      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.409 -0.209 0.000 1.425
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.709 -0.531 0.000
y -0.531 -25.102 0.000
z 0.000 0.000 -28.965
Traceless
 xyz
x -6.676 -0.531 0.000
y -0.531 6.235 0.000
z 0.000 0.000 0.440
Polar
3z2-r20.881
x2-y2-8.608
xy-0.531
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.195 -0.151 0.000
y -0.151 7.151 0.000
z 0.000 0.000 4.575


<r2> (average value of r2) Å2
<r2> 124.508
(<r2>)1/2 11.158