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All results from a given calculation for C2H5F (fluoroethane)

using model chemistry: PBEPBE/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 PBEPBE/3-21G
 hartrees
Energy at 0K-177.868041
Energy at 298.15K-177.873560
Nuclear repulsion energy77.852256
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/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' 3074 3046 20.08      
2 A' 2998 2970 8.34      
3 A' 2950 2923 49.27      
4 A' 1543 1529 0.60      
5 A' 1520 1506 4.63      
6 A' 1415 1403 8.31      
7 A' 1410 1397 25.67      
8 A' 1120 1110 22.93      
9 A' 1039 1029 38.66      
10 A' 882 874 4.22      
11 A' 361 357 5.06      
12 A" 3080 3052 26.00      
13 A" 2982 2955 47.52      
14 A" 1504 1490 6.95      
15 A" 1295 1283 1.54      
16 A" 1167 1156 3.13      
17 A" 825 818 2.42      
18 A" 260 257 0.51      

Unscaled Zero Point Vibrational Energy (zpe) 14711.1 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 14577.2 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/3-21G
ABC
1.16559 0.30318 0.26507

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.571 0.000
C2 1.143 -0.446 0.000
F3 -1.252 -0.120 0.000
H4 0.065 1.218 0.896
H5 0.065 1.218 -0.896
H6 2.116 0.074 0.000
H7 1.080 -1.087 0.895
H8 1.080 -1.087 -0.895

Atom - Atom Distances (Å)
  C1 C2 F3 H4 H5 H6 H7 H8
C11.52971.42961.10751.10752.17382.17132.1713
C21.52972.41672.17562.17561.10341.10251.1025
F31.42962.41672.08042.08043.37352.67822.6782
H41.10752.17562.08041.79272.51372.51813.0903
H51.10752.17562.08041.79272.51373.09032.5181
H62.17381.10343.37352.51372.51371.79481.7948
H72.17131.10252.67822.51813.09031.79481.7901
H82.17131.10252.67823.09032.51811.79481.7901

picture of fluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 110.242 C1 C2 H7 110.098
C1 C2 H8 110.098 C2 C1 F3 109.456
C2 C1 H4 110.139 C2 C1 H5 110.139
F3 C1 H4 109.512 F3 C1 H5 109.512
H4 C1 H5 108.062 H6 C2 H7 108.904
H6 C2 H8 108.904 H7 C2 H8 108.556
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.123      
2 C -0.644      
3 F -0.269      
4 H 0.194      
5 H 0.194      
6 H 0.204      
7 H 0.222      
8 H 0.222      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.565 0.652 0.000 1.695
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.278 -0.151 0.000
y -0.151 -17.890 0.000
z 0.000 0.000 -18.078
Traceless
 xyz
x -2.294 -0.151 0.000
y -0.151 1.288 0.000
z 0.000 0.000 1.006
Polar
3z2-r22.012
x2-y2-2.388
xy-0.151
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.395 -0.017 0.000
y -0.017 3.292 0.000
z 0.000 0.000 3.142


<r2> (average value of r2) Å2
<r2> 52.289
(<r2>)1/2 7.231