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

using model chemistry: B3PW91/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 B3PW91/STO-3G
 hartrees
Energy at 0K-264.797408
Energy at 298.15K 
HF Energy-264.797408
Nuclear repulsion energy173.234726
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 B3PW91/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' 3733 3303 16.04      
2 A' 3511 3107 0.34      
3 A' 3354 2968 2.54      
4 A' 3339 2955 1.12      
5 A' 1908 1688 64.67      
6 A' 1688 1494 5.65      
7 A' 1647 1457 4.12      
8 A' 1576 1395 1.53      
9 A' 1508 1334 17.58      
10 A' 1439 1274 3.20      
11 A' 1244 1101 107.09      
12 A' 1159 1026 39.64      
13 A' 1089 964 1.96      
14 A' 839 742 7.84      
15 A' 570 505 11.04      
16 A' 428 378 15.50      
17 A' 225 199 0.96      
18 A" 3513 3109 0.49      
19 A" 3457 3059 0.01      
20 A" 1682 1488 3.77      
21 A" 1377 1219 0.33      
22 A" 1175 1040 0.00      
23 A" 854 756 8.85      
24 A" 653 578 69.56      
25 A" 516 457 5.31      
26 A" 191 169 0.01      
27 A" 30i 27i 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 21322.2 cm-1
Scaled (by 0.885) Zero Point Vibrational Energy (zpe) 18870.1 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 B3PW91/STO-3G
ABC
0.31323 0.12143 0.09050

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.578 0.000
C2 -0.596 -0.863 0.000
C3 0.509 -1.944 0.000
O4 -1.053 1.529 0.000
O5 1.202 0.914 0.000
H6 -1.243 -0.971 0.888
H7 -1.243 -0.971 -0.888
H8 0.059 -2.948 0.000
H9 1.146 -1.847 -0.890
H10 1.146 -1.847 0.890
H11 -0.533 2.414 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9 H10 H11
C11.55932.57311.41941.24852.17522.17523.52602.82562.82561.9116
C21.55931.54592.43562.52831.10391.10392.18512.18972.18973.2772
C32.57311.54593.80882.94152.19242.19241.09941.09911.09914.4808
O41.41942.43563.80882.33822.65952.65954.61304.12634.12631.0259
O51.24852.52832.94152.33823.21283.21284.02752.90122.90122.2937
H62.17521.10392.19242.65953.21281.77522.52843.10452.54513.5700
H72.17521.10392.19242.65953.21281.77522.52842.54513.10453.5700
H83.52602.18511.09944.61304.02752.52842.52841.78511.78515.3938
H92.82562.18971.09914.12632.90123.10452.54511.78511.78024.6649
H102.82562.18971.09914.12632.90122.54513.10451.78511.78024.6649
H111.91163.27724.48081.02592.29373.57003.57005.39384.66494.6649

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 111.918 C1 C2 H6 108.312
C1 C2 H7 108.312 C1 O4 H11 101.624
C2 C1 O4 109.617 C2 C1 O5 128.095
C2 C3 H8 110.239 C2 C3 H9 110.618
C2 C3 H10 110.618 C3 C2 H6 110.549
C3 C2 H7 110.549 O4 C1 O5 122.288
H6 C2 H7 107.037 H8 C3 H9 108.570
H8 C3 H10 108.570 H9 C3 H10 108.157
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.201      
2 C -0.158      
3 C -0.228      
4 O -0.224      
5 O -0.223      
6 H 0.091      
7 H 0.091      
8 H 0.081      
9 H 0.085      
10 H 0.085      
11 H 0.200      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.790 -0.033 0.000 0.791
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.168 -0.190 0.000
y -0.190 -23.755 0.000
z 0.000 0.000 -26.794
Traceless
 xyz
x -5.893 -0.190 0.000
y -0.190 5.226 0.000
z 0.000 0.000 0.668
Polar
3z2-r21.335
x2-y2-7.413
xy-0.190
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.411 -0.037 0.000
y -0.037 3.927 0.000
z 0.000 0.000 1.924


<r2> (average value of r2) Å2
<r2> 128.077
(<r2>)1/2 11.317