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All results from a given calculation for CH3CHF2 (Ethane, 1,1-difluoro-)

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-276.489031
Energy at 298.15K 
HF Energy-276.489031
Nuclear repulsion energy129.554816
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' 3101 2957 12.42 43.39 0.72 0.84
2 A' 3018 2878 1.71 96.63 0.01 0.02
3 A' 2975 2836 71.02 92.84 0.33 0.50
4 A' 1507 1437 5.46 20.35 0.75 0.86
5 A' 1423 1357 35.53 4.91 0.74 0.85
6 A' 1391 1326 32.07 4.70 0.75 0.86
7 A' 1149 1096 28.21 1.86 0.17 0.30
8 A' 1096 1045 80.86 4.90 0.69 0.82
9 A' 860 820 4.41 6.87 0.21 0.35
10 A' 528 503 5.57 1.12 0.60 0.75
11 A' 422 402 12.00 1.33 0.70 0.82
12 A" 3102 2958 8.98 53.92 0.75 0.86
13 A" 1511 1441 1.18 15.50 0.75 0.86
14 A" 1385 1321 38.11 13.16 0.75 0.86
15 A" 1161 1107 85.22 4.14 0.75 0.86
16 A" 959 915 36.16 5.65 0.75 0.86
17 A" 337 322 0.01 0.39 0.75 0.86
18 A" 259 247 0.12 0.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13092.2 cm-1
Scaled (by 0.9535) Zero Point Vibrational Energy (zpe) 12483.5 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
0.29608 0.29379 0.16544

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 0.332 0.176 0.000
C2 -0.923 1.024 0.000
H3 1.256 0.783 0.000
F4 0.332 -0.647 1.142
F5 0.332 -0.647 -1.142
H6 -1.799 0.357 0.000
H7 -0.951 1.658 0.899
H8 -0.951 1.658 -0.899

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.51471.10541.40771.40772.13892.15672.1567
C21.51472.19212.38162.38161.10141.10041.1004
H31.10542.19212.05002.05003.08472.53862.5386
F41.40772.38162.05002.28372.61802.64963.3356
F51.40772.38162.05002.28372.61803.33562.6496
H62.13891.10143.08472.61802.61801.79481.7948
H72.15671.10042.53862.64963.33561.79481.7978
H82.15671.10042.53863.33562.64961.79481.7978

picture of Ethane, 1,1-difluoro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 108.660 C1 C2 H7 110.110
C1 C2 H8 110.110 C2 C1 H3 112.646
C2 C1 F4 109.113 C2 C1 F5 109.113
H3 C1 F4 108.731 H3 C1 F5 108.731
F4 C1 F5 108.420 H6 C2 H7 109.196
H6 C2 H8 109.196 H7 C2 H8 109.544
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 0.301      
2 C -0.670      
3 H 0.196      
4 F -0.258      
5 F -0.258      
6 H 0.241      
7 H 0.224      
8 H 0.224      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.314 1.907 0.000 1.932
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.361 0.577 0.000
y 0.577 -22.442 0.000
z 0.000 0.000 -24.677
Traceless
 xyz
x 2.198 0.577 0.000
y 0.577 0.578 0.000
z 0.000 0.000 -2.776
Polar
3z2-r2-5.551
x2-y21.080
xy0.577
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.155 -0.059 0.000
y -0.059 3.173 0.000
z 0.000 0.000 3.273


<r2> (average value of r2) Å2
<r2> 73.980
(<r2>)1/2 8.601