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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-267.950836
Energy at 298.15K-267.957983
HF Energy-267.771537
Nuclear repulsion energy176.012722
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' 3618 3618 31.08      
2 A' 3160 3160 23.30      
3 A' 3082 3082 14.08      
4 A' 3078 3078 15.88      
5 A' 1729 1729 181.51      
6 A' 1563 1563 9.56      
7 A' 1531 1531 21.52      
8 A' 1486 1486 9.05      
9 A' 1436 1436 34.15      
10 A' 1328 1328 15.21      
11 A' 1158 1158 116.77      
12 A' 1094 1094 180.06      
13 A' 1041 1041 27.74      
14 A' 818 818 3.07      
15 A' 606 606 17.13      
16 A' 465 465 28.47      
17 A' 256 256 2.53      
18 A" 3167 3167 24.84      
19 A" 3114 3114 3.66      
20 A" 1559 1559 7.21      
21 A" 1320 1320 0.04      
22 A" 1159 1159 0.11      
23 A" 841 841 14.44      
24 A" 660 660 156.28      
25 A" 528 528 25.14      
26 A" 206 206 0.01      
27 A" 43 43 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 20022.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 20022.4 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
0.32677 0.12512 0.09360

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 0.562 0.000
C2 -0.602 -0.821 0.000
C3 0.458 -1.928 0.000
O4 -0.984 1.541 0.000
O5 1.207 0.847 0.000
H6 -1.260 -0.897 0.875
H7 -1.260 -0.897 -0.875
H8 -0.021 -2.911 0.000
H9 1.100 -1.854 -0.882
H10 1.100 -1.854 0.882
H11 -0.573 2.432 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9 H10 H11
C11.50832.53161.38811.23982.11702.11703.47352.79782.79781.9560
C21.50831.53262.39242.46011.09691.09692.16982.17812.17813.2531
C32.53161.53263.75642.87362.18562.18561.09411.09351.09354.4802
O41.38812.39243.75642.29832.60492.60494.55524.08064.08060.9814
O51.23982.46012.87362.29833.14473.14473.95342.84332.84332.3839
H62.11701.09692.18562.60493.14471.74952.52103.09372.54663.5102
H72.11701.09692.18562.60493.14471.74952.52102.54663.09373.5102
H83.47352.16981.09414.55523.95342.52102.52101.77541.77545.3720
H92.79782.17811.09354.08062.84333.09372.54661.77541.76364.6855
H102.79782.17811.09354.08062.84332.54663.09371.77541.76364.6855
H111.95603.25314.48020.98142.38393.51023.51025.37204.68554.6855

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 112.711 C1 C2 H6 107.651
C1 C2 H7 107.651 C1 O4 H11 110.096
C2 C1 O4 111.310 C2 C1 O5 126.795
C2 C3 H8 110.275 C2 C3 H9 110.973
C2 C3 H10 110.973 C3 C2 H6 111.357
C3 C2 H7 111.357 O4 C1 O5 121.895
H6 C2 H7 105.769 H8 C3 H9 108.510
H8 C3 H10 108.510 H9 C3 H10 107.501
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 0.518      
2 C -0.322      
3 C -0.401      
4 O -0.583      
5 O -0.421      
6 H 0.183      
7 H 0.183      
8 H 0.138      
9 H 0.158      
10 H 0.158      
11 H 0.391      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.383 -0.343 0.000 1.425
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -36.059 -0.478 0.000
y -0.478 -24.935 0.000
z 0.000 0.000 -29.639
Traceless
 xyz
x -8.772 -0.478 0.000
y -0.478 7.914 0.000
z 0.000 0.000 0.858
Polar
3z2-r21.716
x2-y2-11.124
xy-0.478
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.901 -0.112 0.000
y -0.112 6.191 0.000
z 0.000 0.000 3.902


<r2> (average value of r2) Å2
<r2> 126.553
(<r2>)1/2 11.250