return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: HF/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-277.051132
Energy at 298.15K 
HF Energy-277.051132
Nuclear repulsion energy134.136601
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/6-311+G(3df,2p)
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' 3263 2965 47.44 24.11 0.27 0.43
2 A' 3235 2940 18.56 114.71 0.34 0.51
3 A' 3181 2890 5.40 135.86 0.01 0.02
4 A' 1603 1456 10.95 4.52 0.72 0.84
5 A' 1576 1432 65.52 1.02 0.11 0.19
6 A' 1515 1377 2.76 0.50 0.50 0.66
7 A' 1274 1158 100.34 2.46 0.35 0.52
8 A' 1239 1125 59.20 3.65 0.41 0.58
9 A' 937 851 8.72 6.72 0.13 0.23
10 A' 622 565 6.66 0.64 0.32 0.49
11 A' 508 462 16.33 0.73 0.49 0.66
12 A" 3254 2957 19.94 48.39 0.75 0.86
13 A" 1605 1458 0.13 2.71 0.75 0.86
14 A" 1525 1385 26.47 3.54 0.75 0.86
15 A" 1270 1154 181.47 2.29 0.75 0.86
16 A" 1052 956 63.72 2.31 0.75 0.86
17 A" 410 373 0.09 0.24 0.75 0.86
18 A" 253 230 0.06 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14160.6 cm-1
Scaled (by 0.9086) Zero Point Vibrational Energy (zpe) 12866.3 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/6-311+G(3df,2p)
ABC
0.32915 0.30321 0.17704

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.322 0.155 0.000
C2 -0.898 1.032 0.000
H3 1.251 0.706 0.000
F4 0.322 -0.642 1.074
F5 0.322 -0.642 -1.074
H6 -1.787 0.416 0.000
H7 -0.897 1.659 0.882
H8 -0.897 1.659 -0.882

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.50161.08091.33791.33792.12462.12702.1270
C21.50162.17372.33302.33301.08191.08181.0818
H31.08092.17371.95881.95883.05242.51052.5105
F41.33792.33301.95882.14862.59232.61123.2567
F51.33792.33301.95882.14862.59233.25672.6112
H62.12461.08193.05242.59232.59231.76471.7647
H72.12701.08182.51052.61123.25671.76471.7630
H82.12701.08182.51053.25672.61121.76471.7630

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 109.574 C1 C2 H7 109.768
C1 C2 H8 109.768 C2 C1 H3 113.637
C2 C1 F4 110.362 C2 C1 F5 110.362
H3 C1 F4 107.684 H3 C1 F5 107.684
F4 C1 F5 106.834 H6 C2 H7 109.286
H6 C2 H8 109.286 H7 C2 H8 109.143
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.964      
2 C -0.387      
3 H 0.117      
4 F -0.552      
5 F -0.552      
6 H 0.141      
7 H 0.135      
8 H 0.135      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.322 2.354 0.000 2.376
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.310 0.584 0.000
y 0.584 -22.944 0.000
z 0.000 0.000 -25.535
Traceless
 xyz
x 2.929 0.584 0.000
y 0.584 0.479 0.000
z 0.000 0.000 -3.408
Polar
3z2-r2-6.817
x2-y21.634
xy0.584
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.873 -0.135 0.000
y -0.135 3.882 0.000
z 0.000 0.000 3.866


<r2> (average value of r2) Å2
<r2> 70.677
(<r2>)1/2 8.407