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

using model chemistry: LSDA/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at LSDA/3-21G
 hartrees
Energy at 0K-265.542113
Energy at 298.15K 
HF Energy-265.542113
Nuclear repulsion energy178.078448
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 LSDA/3-21G
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' 3372 3316 9.33      
2 A' 3095 3044 8.86      
3 A' 3008 2958 12.61      
4 A' 3000 2951 3.87      
5 A' 1781 1752 150.02      
6 A' 1496 1472 17.86      
7 A' 1446 1422 32.60      
8 A' 1409 1385 40.33      
9 A' 1391 1368 44.01      
10 A' 1297 1275 0.20      
11 A' 1124 1106 116.63      
12 A' 1069 1052 129.90      
13 A' 1021 1004 6.77      
14 A' 816 803 15.25      
15 A' 600 591 15.35      
16 A' 462 454 33.79      
17 A' 251 247 3.40      
18 A" 3087 3036 8.30      
19 A" 3035 2985 0.35      
20 A" 1493 1468 13.70      
21 A" 1264 1243 0.41      
22 A" 1102 1084 0.02      
23 A" 814 801 26.85      
24 A" 677 666 105.94      
25 A" 524 515 34.57      
26 A" 175 172 0.02      
27 A" 30i 29i 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 19388.1 cm-1
Scaled (by 0.9836) Zero Point Vibrational Energy (zpe) 19070.1 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 LSDA/3-21G
ABC
0.33042 0.13097 0.09721

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.549 0.000
C2 -0.628 -0.806 0.000
C3 0.444 -1.875 0.000
O4 -0.957 1.527 0.000
O5 1.202 0.791 0.000
H6 -1.290 -0.878 0.884
H7 -1.290 -0.878 -0.884
H8 0.007 -2.886 0.000
H9 1.092 -1.764 -0.886
H10 1.092 -1.764 0.886
H11 -0.477 2.414 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9 H10 H11
C11.49342.46431.36831.22662.11732.11733.43532.70662.70661.9250
C21.49341.51392.35642.42921.10681.10682.17482.15852.15853.2237
C32.46431.51393.67942.77192.18692.18691.10191.10311.10314.3868
O41.36832.35643.67942.28122.58452.58454.51743.97643.97641.0085
O51.22662.42922.77192.28123.12763.12763.86712.70652.70652.3351
H62.11731.10682.18692.58453.12761.76762.54843.09682.54123.5048
H72.11731.10682.18692.58453.12761.76762.54842.54123.09683.5048
H83.43532.17481.10194.51743.86712.54842.54841.79531.79535.3223
H92.70662.15851.10313.97642.70653.09682.54121.79531.77204.5496
H102.70662.15851.10313.97642.70652.54123.09681.79531.77204.5496
H111.92503.22374.38681.00852.33513.50483.50485.32234.54964.5496

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 110.059 C1 C2 H6 108.113
C1 C2 H7 108.113 C1 O4 H11 107.207
C2 C1 O4 110.780 C2 C1 O5 126.248
C2 C3 H8 111.513 C2 C3 H9 110.152
C2 C3 H10 110.152 C3 C2 H6 112.186
C3 C2 H7 112.186 O4 C1 O5 122.972
H6 C2 H7 105.972 H8 C3 H9 109.013
H8 C3 H10 109.013 H9 C3 H10 106.875
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.540      
2 C -0.538      
3 C -0.624      
4 O -0.512      
5 O -0.424      
6 H 0.258      
7 H 0.258      
8 H 0.212      
9 H 0.232      
10 H 0.232      
11 H 0.367      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.266 0.164 0.000 1.277
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.339 -0.234 0.000
y -0.234 -24.235 0.000
z 0.000 0.000 -29.134
Traceless
 xyz
x -7.655 -0.234 0.000
y -0.234 7.502 0.000
z 0.000 0.000 0.153
Polar
3z2-r20.306
x2-y2-10.104
xy-0.234
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.443 -0.108 0.000
y -0.108 6.229 0.000
z 0.000 0.000 3.700


<r2> (average value of r2) Å2
<r2> 122.162
(<r2>)1/2 11.053