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: BLYP/daug-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 BLYP/daug-cc-pVTZ
 hartrees
Energy at 0K-278.368100
Energy at 298.15K 
HF Energy-278.368100
Nuclear repulsion energy130.406266
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/daug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at BLYP/daug-cc-pVTZ
ABC
0.30526 0.29226 0.16727

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/daug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.323 0.173 0.000
C2 -0.905 1.054 0.000
H3 1.280 0.711 0.000
F4 0.323 -0.660 1.119
F5 0.323 -0.660 -1.119
H6 -1.805 0.431 0.000
H7 -0.904 1.690 0.892
H8 -0.904 1.690 -0.892

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.51161.09761.39461.39462.14452.14592.1459
C21.51162.21122.38682.38681.09511.09541.0954
H31.09762.21122.01172.01173.09802.55402.5540
F41.39462.38682.01172.23762.64072.66123.3274
F51.39462.38682.01172.23762.64073.32742.6612
H62.14451.09513.09802.64072.64071.78691.7869
H72.14591.09542.55402.66123.32741.78691.7830
H82.14591.09542.55403.32742.66121.78691.7830

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 109.682 C1 C2 H7 109.772
C1 C2 H8 109.772 C2 C1 H3 114.957
C2 C1 F4 110.361 C2 C1 F5 110.361
H3 C1 F4 107.040 H3 C1 F5 107.040
F4 C1 F5 106.686 H6 C2 H7 109.323
H6 C2 H8 109.323 H7 C2 H8 108.953
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.616      
2 C -1.141      
3 H 0.575      
4 F -0.733      
5 F -0.733      
6 H 0.098      
7 H 0.159      
8 H 0.159      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.392 2.307 0.000 2.340
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.975 0.457 0.000
y 0.457 -23.415 0.000
z 0.000 0.000 -26.045
Traceless
 xyz
x 2.755 0.457 0.000
y 0.457 0.595 0.000
z 0.000 0.000 -3.350
Polar
3z2-r2-6.700
x2-y21.440
xy0.457
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.698 -0.249 0.000
y -0.249 4.773 0.000
z 0.000 0.000 4.751


<r2> (average value of r2) Å2
<r2> 74.033
(<r2>)1/2 8.604