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 CH2FCl (fluorochloromethane)

using model chemistry: mPW1PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/3-21G*
 hartrees
Energy at 0K-596.457881
Energy at 298.15K-596.460501
Nuclear repulsion energy99.776248
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 mPW1PW91/3-21G*
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' 3126 2968 22.04      
2 A' 1570 1491 0.06      
3 A' 1418 1347 33.23      
4 A' 1110 1054 106.93      
5 A' 704 668 104.02      
6 A' 358 340 1.96      
7 A" 3196 3035 15.27      
8 A" 1272 1208 0.65      
9 A" 1034 982 0.19      

Unscaled Zero Point Vibrational Energy (zpe) 6893.5 cm-1
Scaled (by 0.9496) Zero Point Vibrational Energy (zpe) 6546.1 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 mPW1PW91/3-21G*
ABC
1.36500 0.18352 0.16700

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.818 0.000
F2 1.386 0.763 0.000
Cl3 -0.691 -0.847 0.000
H4 -0.367 1.308 0.900
H5 -0.367 1.308 -0.900

Atom - Atom Distances (Å)
  C1 F2 Cl3 H4 H5
C11.38741.80201.08861.0886
F21.38742.62802.04462.0446
Cl31.80202.62802.35742.3574
H41.08862.04462.35741.8004
H51.08862.04462.35741.8004

picture of fluorochloromethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 C1 Cl3 110.290 F2 C1 H4 110.749
F2 C1 H5 110.749 Cl3 C1 H4 106.665
Cl3 C1 H5 106.665 H4 C1 H5 111.561
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.195      
2 F -0.279      
3 Cl -0.049      
4 H 0.261      
5 H 0.261      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.043 1.836 0.000 2.112
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.218 -1.606 0.000
y -1.606 -22.322 0.000
z 0.000 0.000 -23.174
Traceless
 xyz
x -3.470 -1.606 0.000
y -1.606 2.373 0.000
z 0.000 0.000 1.096
Polar
3z2-r22.192
x2-y2-3.895
xy-1.606
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.715 0.741 0.000
y 0.741 3.724 0.000
z 0.000 0.000 2.192


<r2> (average value of r2) Å2
<r2> 67.091
(<r2>)1/2 8.191