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

using model chemistry: B2PLYP/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 B2PLYP/6-31G*
 hartrees
Energy at 0K-268.118709
Energy at 298.15K-268.125870
HF Energy-267.872731
Nuclear repulsion energy177.930212
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 B2PLYP/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3702 3514 51.52      
2 A' 3176 3014 21.69      
3 A' 3101 2943 17.87      
4 A' 3091 2934 11.61      
5 A' 1844 1750 232.99      
6 A' 1551 1472 9.62      
7 A' 1514 1438 11.58      
8 A' 1467 1392 2.95      
9 A' 1444 1371 51.15      
10 A' 1337 1269 3.28      
11 A' 1194 1133 238.42      
12 A' 1110 1054 64.66      
13 A' 1032 980 1.36      
14 A' 830 788 8.73      
15 A' 615 584 21.23      
16 A' 469 445 21.98      
17 A' 255 242 2.66      
18 A" 3184 3022 21.05      
19 A" 3126 2967 5.09      
20 A" 1546 1467 5.76      
21 A" 1311 1245 0.02      
22 A" 1138 1080 0.39      
23 A" 828 786 17.90      
24 A" 682 648 105.38      
25 A" 525 499 19.14      
26 A" 215 204 0.00      
27 A" 44 41 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 20165.7 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 19141.3 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 B2PLYP/6-31G*
ABC
0.33641 0.12719 0.09553

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.570 0.000
C2 -0.605 -0.814 0.000
C3 0.450 -1.915 0.000
O4 -0.961 1.531 0.000
O5 1.185 0.834 0.000
H6 -1.263 -0.887 0.872
H7 -1.263 -0.887 -0.872
H8 -0.027 -2.898 0.000
H9 1.090 -1.840 -0.881
H10 1.090 -1.840 0.881
H11 -0.484 2.382 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9 H10 H11
C11.51032.52481.35911.21382.11642.11643.46762.78792.78791.8762
C21.51031.52432.37202.43301.09541.09542.16232.16862.16863.1987
C32.52481.52433.72322.84542.17982.17981.09261.09161.09164.3973
O41.35912.37203.72322.25582.58832.58834.52614.04344.04340.9756
O51.21382.43302.84542.25583.11713.11713.92382.81732.81732.2764
H62.11641.09542.17982.58833.11711.74492.51643.08582.53953.4722
H72.11641.09542.17982.58833.11711.74492.51642.53953.08583.4722
H83.46762.16231.09264.52613.92382.51642.51641.77281.77285.2998
H92.78792.16861.09164.04342.81733.08582.53951.77281.76124.5919
H102.78792.16861.09164.04342.81732.53953.08581.77281.76124.5919
H111.87623.19874.39730.97562.27643.47223.47225.29984.59194.5919

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 112.610 C1 C2 H6 107.561
C1 C2 H7 107.561 C1 O4 H11 105.773
C2 C1 O4 111.399 C2 C1 O5 126.196
C2 C3 H8 110.350 C2 C3 H9 110.912
C2 C3 H10 110.912 C3 C2 H6 111.580
C3 C2 H7 111.580 O4 C1 O5 122.405
H6 C2 H7 105.584 H8 C3 H9 108.513
H8 C3 H10 108.513 H9 C3 H10 107.545
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.579      
2 C -0.367      
3 C -0.453      
4 O -0.588      
5 O -0.454      
6 H 0.186      
7 H 0.186      
8 H 0.153      
9 H 0.170      
10 H 0.170      
11 H 0.420      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.395 -0.224 0.000 1.413
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.595 -0.368 0.000
y -0.368 -25.135 0.000
z 0.000 0.000 -29.222
Traceless
 xyz
x -7.416 -0.368 0.000
y -0.368 6.773 0.000
z 0.000 0.000 0.643
Polar
3z2-r21.286
x2-y2-9.460
xy-0.368
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.801 -0.089 0.000
y -0.089 6.265 0.000
z 0.000 0.000 4.105


<r2> (average value of r2) Å2
<r2> 124.078
(<r2>)1/2 11.139