return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: PBEPBE/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 PBEPBE/6-31G*
 hartrees
Energy at 0K-268.079869
Energy at 298.15K-268.086849
HF Energy-268.079869
Nuclear repulsion energy176.929287
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*
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' 3563 3512 26.12      
2 A' 3081 3037 19.47      
3 A' 3005 2962 19.13      
4 A' 2987 2945 12.05      
5 A' 1793 1768 221.31      
6 A' 1483 1462 10.46      
7 A' 1440 1419 13.92      
8 A' 1395 1375 3.82      
9 A' 1378 1358 46.92      
10 A' 1283 1264 0.58      
11 A' 1143 1127 207.80      
12 A' 1066 1051 64.76      
13 A' 997 982 3.14      
14 A' 801 789 11.87      
15 A' 592 583 16.96      
16 A' 453 446 21.13      
17 A' 244 241 2.76      
18 A" 3086 3041 18.90      
19 A" 3021 2978 4.79      
20 A" 1477 1456 6.81      
21 A" 1251 1233 0.04      
22 A" 1080 1064 0.11      
23 A" 793 782 20.64      
24 A" 673 663 86.91      
25 A" 506 499 18.21      
26 A" 204 201 0.01      
27 A" 26 25 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 19408.7 cm-1
Scaled (by 0.9857) Zero Point Vibrational Energy (zpe) 19131.2 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*
ABC
0.33182 0.12610 0.09460

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.573 0.000
C2 -0.605 -0.818 0.000
C3 0.452 -1.921 0.000
O4 -0.971 1.536 0.000
O5 1.192 0.840 0.000
H6 -1.273 -0.894 0.878
H7 -1.273 -0.894 -0.878
H8 -0.025 -2.915 0.000
H9 1.101 -1.846 -0.887
H10 1.101 -1.846 0.887
H11 -0.476 2.388 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9 H10 H11
C11.51692.53461.36831.22142.13112.13113.48782.80162.80161.8773
C21.51691.52772.38292.44501.10611.10612.17552.18012.18013.2094
C32.53461.52773.73922.85872.19172.19171.10231.10181.10184.4087
O41.36832.38293.73922.27242.60132.60134.55084.06464.06460.9855
O51.22142.44502.85872.27243.13873.13873.94722.83012.83012.2761
H62.13111.10612.19172.60133.13871.75692.53293.10802.55773.4896
H72.13111.10612.19172.60133.13871.75692.53292.55773.10803.4896
H83.48782.17551.10234.55083.94722.53292.53291.78821.78825.3227
H92.80162.18011.10184.06462.83013.10802.55771.78821.77464.6049
H102.80162.18011.10184.06462.83012.55773.10801.78821.77464.6049
H111.87733.20944.40870.98552.27613.48963.48965.32274.60494.6049

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 112.715 C1 C2 H6 107.649
C1 C2 H7 107.649 C1 O4 H11 104.624
C2 C1 O4 111.265 C2 C1 O5 126.147
C2 C3 H8 110.578 C2 C3 H9 110.977
C2 C3 H10 110.977 C3 C2 H6 111.637
C3 C2 H7 111.637 O4 C1 O5 122.588
H6 C2 H7 105.155 H8 C3 H9 108.454
H8 C3 H10 108.454 H9 C3 H10 107.285
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.526      
2 C -0.380      
3 C -0.479      
4 O -0.532      
5 O -0.427      
6 H 0.190      
7 H 0.190      
8 H 0.158      
9 H 0.177      
10 H 0.177      
11 H 0.398      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.383 -0.186 0.000 1.396
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.046 -0.444 0.000
y -0.444 -24.920 0.000
z 0.000 0.000 -29.117
Traceless
 xyz
x -7.028 -0.444 0.000
y -0.444 6.661 0.000
z 0.000 0.000 0.366
Polar
3z2-r20.733
x2-y2-9.126
xy-0.444
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.007 -0.112 0.000
y -0.112 6.755 0.000
z 0.000 0.000 4.225


<r2> (average value of r2) Å2
<r2> 124.956
(<r2>)1/2 11.178