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All results from a given calculation for CH3CF3 (Ethane, 1,1,1-trifluoro-)

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 C3V 1A1
Energy calculated at HF/CEP-31G
 hartrees
Energy at 0K-84.213416
Energy at 298.15K-84.218076
Nuclear repulsion energy113.021312
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 A1 3271 2948 4.12      
2 A1 1586 1430 49.64      
3 A1 1404 1266 167.52      
4 A1 840 757 13.10      
5 A1 597 538 49.62      
6 A2 216 194 0.00      
7 E 3377 3044 18.26      
7 E 3377 3044 18.26      
8 E 1620 1460 4.00      
8 E 1620 1460 4.00      
9 E 1345 1213 244.94      
9 E 1345 1213 244.94      
10 E 1065 960 91.88      
10 E 1065 960 91.88      
11 E 536 483 5.26      
11 E 536 483 5.26      
12 E 369 332 0.83      
12 E 369 332 0.83      

Unscaled Zero Point Vibrational Energy (zpe) 12268.5 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 11058.8 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
0.17627 0.16661 0.16661

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.495
C2 0.000 0.000 -0.021
H3 0.000 -1.025 1.850
H4 0.888 0.512 1.850
H5 -0.888 0.512 1.850
F6 0.000 1.274 -0.545
F7 -1.103 -0.637 -0.545
F8 1.103 -0.637 -0.545

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 F6 F7 F8
C11.51581.08471.08471.08472.40462.40462.4046
C21.51582.13362.13362.13361.37721.37721.3772
H31.08472.13361.77501.77503.31952.66522.6652
H41.08472.13361.77501.77502.66523.31952.6652
H51.08472.13361.77501.77502.66522.66523.3195
F62.40461.37723.31952.66522.66522.20612.2061
F72.40461.37722.66523.31952.66522.20612.2061
F82.40461.37722.66522.66523.31952.20612.2061

picture of Ethane, 1,1,1-trifluoro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F6 112.353 C1 C2 F7 112.353
C1 C2 F8 112.353 C2 C1 H3 109.134
C2 C1 H4 109.134 C2 C1 H5 109.134
H3 C1 H4 109.807 H3 C1 H5 109.807
H4 C1 H5 109.807 F6 C2 F7 106.443
F6 C2 F8 106.443 F7 C2 F8 106.443
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.174      
2 C 0.424      
3 H 0.150      
4 H 0.150      
5 H 0.150      
6 F -0.233      
7 F -0.233      
8 F -0.233      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 3.452 3.452
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.197 0.000 0.000
y 0.000 -30.197 0.000
z 0.000 0.000 -25.530
Traceless
 xyz
x -2.334 0.000 0.000
y 0.000 -2.334 0.000
z 0.000 0.000 4.667
Polar
3z2-r29.335
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.050 0.000 0.000
y 0.000 3.050 0.000
z 0.000 0.000 2.917


<r2> (average value of r2) Å2
<r2> 80.549
(<r2>)1/2 8.975