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: B1B95/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/6-31G**
 hartrees
Energy at 0K-278.212447
Energy at 298.15K 
HF Energy-278.212447
Nuclear repulsion energy132.696390
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 B1B95/6-31G**
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' 3197 3053 13.78 44.66 0.73 0.84
2 A' 3111 2970 53.12 123.30 0.21 0.35
3 A' 3104 2964 6.75 74.44 0.03 0.06
4 A' 1515 1447 5.55 15.94 0.75 0.86
5 A' 1468 1401 80.43 3.43 0.69 0.82
6 A' 1413 1349 4.63 1.07 0.75 0.86
7 A' 1191 1137 79.19 2.60 0.32 0.49
8 A' 1171 1118 47.47 4.13 0.64 0.78
9 A' 895 854 5.78 6.37 0.25 0.40
10 A' 569 543 5.39 0.79 0.58 0.74
11 A' 464 443 12.40 0.92 0.62 0.77
12 A" 3195 3051 10.58 54.74 0.75 0.86
13 A" 1518 1450 0.00 10.72 0.75 0.86
14 A" 1431 1367 42.95 10.53 0.75 0.86
15 A" 1201 1146 146.04 2.95 0.75 0.86
16 A" 986 941 39.24 5.01 0.75 0.86
17 A" 376 359 0.08 0.22 0.75 0.86
18 A" 253 242 0.07 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13528.6 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 12917.1 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 B1B95/6-31G**
ABC
0.31661 0.30251 0.17362

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.324 0.163 0.000
C2 -0.903 1.025 0.000
H3 1.261 0.727 0.000
F4 0.324 -0.642 1.097
F5 0.324 -0.642 -1.097
H6 -1.787 0.386 0.000
H7 -0.920 1.657 0.888
H8 -0.920 1.657 -0.888

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.49961.09381.36031.36032.12312.13772.1377
C21.49962.18462.34222.34221.09091.09061.0906
H31.09382.18461.98861.98863.06742.53212.5321
F41.36032.34221.98862.19382.59162.62223.2823
F51.36032.34221.98862.19382.59163.28232.6222
H62.12311.09093.06742.59162.59161.77701.7770
H72.13771.09062.53212.62223.28231.77701.7767
H82.13771.09062.53213.28232.62221.77701.7767

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 109.060 C1 C2 H7 110.241
C1 C2 H8 110.241 C2 C1 H3 113.862
C2 C1 F4 109.871 C2 C1 F5 109.871
H3 C1 F4 107.764 H3 C1 F5 107.764
F4 C1 F5 107.487 H6 C2 H7 109.095
H6 C2 H8 109.095 H7 C2 H8 109.085
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.444      
2 C -0.555      
3 H 0.137      
4 F -0.295      
5 F -0.295      
6 H 0.196      
7 H 0.183      
8 H 0.183      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.320 1.946 0.000 1.972
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.161 0.506 0.000
y 0.506 -22.242 0.000
z 0.000 0.000 -24.396
Traceless
 xyz
x 2.159 0.506 0.000
y 0.506 0.536 0.000
z 0.000 0.000 -2.695
Polar
3z2-r2-5.389
x2-y21.082
xy0.506
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.454 -0.061 0.000
y -0.061 3.402 0.000
z 0.000 0.000 3.406


<r2> (average value of r2) Å2
<r2> 71.282
(<r2>)1/2 8.443