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

using model chemistry: BLYP/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 BLYP/3-21G
 hartrees
Energy at 0K-276.718565
Energy at 298.15K 
HF Energy-276.718565
Nuclear repulsion energy129.038931
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 BLYP/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' 3079 3063 18.07 42.81 0.72 0.84
2 A' 3009 2992 2.67 97.48 0.01 0.02
3 A' 2968 2951 72.82 92.46 0.35 0.51
4 A' 1519 1510 4.46 20.59 0.75 0.86
5 A' 1434 1427 21.82 4.62 0.74 0.85
6 A' 1393 1386 35.35 5.79 0.75 0.86
7 A' 1148 1142 24.98 2.02 0.23 0.37
8 A' 1071 1065 81.11 4.85 0.70 0.82
9 A' 847 843 5.84 7.15 0.20 0.33
10 A' 524 521 5.84 1.17 0.58 0.73
11 A' 418 416 11.38 1.40 0.70 0.82
12 A" 3079 3062 13.38 54.94 0.75 0.86
13 A" 1523 1514 0.99 16.30 0.75 0.86
14 A" 1388 1381 36.15 12.85 0.75 0.86
15 A" 1151 1145 70.75 4.33 0.75 0.86
16 A" 947 942 49.12 5.88 0.75 0.86
17 A" 336 334 0.00 0.40 0.75 0.86
18 A" 256 254 0.12 0.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13045.1 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 12973.4 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 BLYP/3-21G
ABC
0.29359 0.29117 0.16391

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.334 0.177 0.000
C2 -0.928 1.028 0.000
H3 1.257 0.782 0.000
F4 0.334 -0.650 1.148
F5 0.334 -0.650 -1.148
H6 -1.803 0.362 0.000
H7 -0.955 1.662 0.898
H8 -0.955 1.662 -0.898

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.52221.10331.41471.41472.14472.16182.1618
C21.52222.19862.39312.39311.09991.09921.0992
H31.10332.19862.05402.05403.08832.54462.5446
F41.41472.39312.05402.29512.62802.65903.3454
F51.41472.39312.05402.29512.62803.34542.6590
H62.14471.09993.08832.62802.62801.79291.7929
H72.16181.09922.54462.65903.34541.79291.7958
H82.16181.09922.54463.34542.65901.79291.7958

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 108.688 C1 C2 H7 110.063
C1 C2 H8 110.063 C2 C1 H3 112.764
C2 C1 F4 109.089 C2 C1 F5 109.089
H3 C1 F4 108.694 H3 C1 F5 108.694
F4 C1 F5 108.420 H6 C2 H7 109.229
H6 C2 H8 109.229 H7 C2 H8 109.547
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.326      
2 C -0.587      
3 H 0.172      
4 F -0.258      
5 F -0.258      
6 H 0.214      
7 H 0.196      
8 H 0.196      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.304 1.891 0.000 1.915
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.405 0.573 0.000
y 0.573 -22.489 0.000
z 0.000 0.000 -24.709
Traceless
 xyz
x 2.194 0.573 0.000
y 0.573 0.568 0.000
z 0.000 0.000 -2.762
Polar
3z2-r2-5.524
x2-y21.084
xy0.573
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.147 -0.061 0.000
y -0.061 3.179 0.000
z 0.000 0.000 3.285


<r2> (average value of r2) Å2
<r2> 74.506
(<r2>)1/2 8.632