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

using model chemistry: CCSD(T)/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCSD(T)/cc-pVTZ
 hartrees
Energy at 0K-277.950205
Energy at 298.15K 
HF Energy-277.054745
Nuclear repulsion energy132.501384
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 CCSD(T)/cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3155 3075        
2 A' 3093 3015        
3 A' 3064 2987        
4 A' 1491 1454        
5 A' 1450 1414        
6 A' 1396 1360        
7 A' 1176 1146        
8 A' 1161 1132        
9 A' 881 859        
10 A' 573 559        
11 A' 470 458        
12 A" 3152 3073        
13 A" 1494 1457        
14 A" 1406 1371        
15 A" 1176 1146        
16 A" 970 945        
17 A" 381 372        
18 A" 233 227        

Unscaled Zero Point Vibrational Energy (zpe) 13360.8 cm-1
Scaled (by 0.9748) Zero Point Vibrational Energy (zpe) 13024.1 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 CCSD(T)/cc-pVTZ
ABC
0.31670 0.30043 0.17299

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.324 0.164 0.000
C2 -0.904 1.032 0.000
H3 1.262 0.722 0.000
F4 0.324 -0.645 1.097
F5 0.324 -0.645 -1.097
H6 -1.789 0.395 0.000
H7 -0.912 1.662 0.889
H8 -0.912 1.662 -0.889

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.50401.09121.36291.36292.12532.13582.1358
C21.50402.18842.35032.35031.08971.08951.0895
H31.09122.18841.98771.98773.06812.52992.5299
F41.36292.35031.98772.19322.59762.62563.2852
F51.36292.35031.98772.19322.59763.28522.6256
H62.12531.08973.06812.59762.59761.77861.7786
H72.13581.08952.52992.62563.28521.77861.7776
H82.13581.08952.52993.28522.62561.77861.7776

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 109.005 C1 C2 H7 109.844
C1 C2 H8 109.844 C2 C1 H3 114.028
C2 C1 F4 110.031 C2 C1 F5 110.031
H3 C1 F4 107.670 H3 C1 F5 107.670
F4 C1 F5 107.146 H6 C2 H7 109.403
H6 C2 H8 109.403 H7 C2 H8 109.327
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability