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All results from a given calculation for CH3CBr3 (1,1,1-tribromoethane)

using model chemistry: HF/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at HF/6-311G*
 hartrees
Energy at 0K-7794.581659
Energy at 298.15K-7794.593699
HF Energy-7794.581659
Nuclear repulsion energy979.236618
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/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3216 2908 8.99      
2 A1 1558 1409 1.92      
3 A1 1130 1022 1.89      
4 A1 444 402 5.51      
5 A1 236 213 0.03      
6 A2 347 314 0.00      
7 E 3298 2983 8.00      
7 E 3298 2983 8.00      
8 E 1617 1463 2.80      
8 E 1617 1463 2.80      
9 E 1205 1090 56.70      
9 E 1205 1090 56.70      
10 E 715 647 90.18      
10 E 715 647 90.18      
11 E 301 272 1.45      
11 E 301 272 1.45      
12 E 165 149 0.02      
12 E 165 149 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 10766.6 cm-1
Scaled (by 0.9044) Zero Point Vibrational Energy (zpe) 9737.4 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/6-311G*
ABC
0.03555 0.03555 0.02110

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.449
C2 0.000 0.000 1.970
Br3 0.000 1.833 -0.205
Br4 1.588 -0.917 -0.205
Br5 -1.588 -0.917 -0.205
H6 0.000 -1.018 2.335
H7 0.881 0.509 2.335
H8 -0.881 0.509 2.335

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.52061.94651.94651.94652.14272.14272.1427
C21.52062.84422.84422.84421.08131.08131.0813
Br31.94652.84423.17543.17543.81812.99662.9966
Br41.94652.84423.17543.17542.99662.99663.8181
Br51.94652.84423.17543.17542.99663.81812.9966
H62.14271.08133.81812.99662.99661.76291.7629
H72.14271.08132.99662.99663.81811.76291.7629
H82.14271.08132.99663.81812.99661.76291.7629

picture of 1,1,1-tribromoethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 109.725 C1 C2 H7 109.725
C1 C2 H8 109.725 C2 C1 Br3 109.629
C2 C1 Br4 109.629 C2 C1 Br5 109.629
Br3 C1 Br4 109.313 Br3 C1 Br5 109.313
Br4 C1 Br5 109.313 H6 C2 H7 109.216
H6 C2 H8 109.216 H7 C2 H8 109.216
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.361      
2 C -0.551      
3 Br 0.051      
4 Br 0.051      
5 Br 0.051      
6 H 0.252      
7 H 0.252      
8 H 0.252      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 1.813 1.813
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -68.369 0.000 0.000
y 0.000 -68.369 0.000
z 0.000 0.000 -65.234
Traceless
 xyz
x -1.567 0.000 0.000
y 0.000 -1.567 0.000
z 0.000 0.000 3.135
Polar
3z2-r26.270
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.039 0.000 0.000
y 0.000 11.039 0.000
z 0.000 0.000 8.141


<r2> (average value of r2) Å2
<r2> 443.321
(<r2>)1/2 21.055