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All results from a given calculation for C2H5F (fluoroethane)

using model chemistry: HF/CEP-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 HF/CEP-31G
 hartrees
Energy at 0K-37.691881
Energy at 298.15K-37.697521
Nuclear repulsion energy46.512138
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 HF/CEP-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' 3308 2982 108.34      
2 A' 3289 2965 25.25      
3 A' 3224 2906 32.57      
4 A' 1660 1496 0.90      
5 A' 1636 1475 5.19      
6 A' 1569 1415 20.60      
7 A' 1525 1375 13.60      
8 A' 1216 1096 17.92      
9 A' 1127 1016 81.76      
10 A' 929 838 49.73      
11 A' 423 381 11.06      
12 A" 3367 3035 112.24      
13 A" 3317 2990 22.75      
14 A" 1616 1457 6.24      
15 A" 1388 1251 0.06      
16 A" 1278 1152 9.70      
17 A" 887 800 0.83      
18 A" 247 223 1.28      

Unscaled Zero Point Vibrational Energy (zpe) 16003.1 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 14425.2 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 HF/CEP-31G
ABC
1.17279 0.30515 0.26638

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.579 0.000
C2 1.150 -0.428 0.000
F3 -1.243 -0.142 0.000
H4 -0.013 1.200 0.889
H5 -0.013 1.200 -0.889
H6 2.106 0.099 0.000
H7 1.103 -1.062 0.884
H8 1.103 -1.062 -0.884

Atom - Atom Distances (Å)
  C1 C2 F3 H4 H5 H6 H7 H8
C11.52831.43651.08491.08492.15962.16492.1649
C21.52832.40992.18982.18981.09121.08831.0883
F31.43652.40992.02562.02563.35712.66982.6698
H41.08492.18982.02561.77822.54832.52213.0828
H51.08492.18982.02561.77822.54833.08282.5221
H62.15961.09123.35712.54832.54831.77011.7701
H72.16491.08832.66982.52213.08281.77011.7673
H82.16491.08832.66983.08282.52211.77011.7673

picture of fluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 109.931 C1 C2 H7 110.528
C1 C2 H8 110.528 C2 C1 F3 108.701
C2 C1 H4 112.747 C2 C1 H5 112.747
F3 C1 H4 106.060 F3 C1 H5 106.060
H4 C1 H5 110.074 H6 C2 H7 108.612
H6 C2 H8 108.612 H7 C2 H8 108.575
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.031      
2 C -0.251      
3 F -0.382      
4 H 0.128      
5 H 0.128      
6 H 0.100      
7 H 0.122      
8 H 0.122      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.624 1.246 0.000 2.905
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.944 -0.641 0.000
y -0.641 -17.751 0.000
z 0.000 0.000 -17.866
Traceless
 xyz
x -4.135 -0.641 0.000
y -0.641 2.153 0.000
z 0.000 0.000 1.982
Polar
3z2-r23.964
x2-y2-4.192
xy-0.641
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.254 -0.034 0.000
y -0.034 3.040 0.000
z 0.000 0.000 2.819


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000