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

using model chemistry: BLYP/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at BLYP/6-31G(2df,p)
 hartrees
Energy at 0K-7793.612807
Energy at 298.15K-7793.624319
HF Energy-7793.612807
Nuclear repulsion energy970.712314
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/6-31G(2df,p)
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 2981 2964 3.02      
2 A1 1369 1361 3.88      
3 A1 1005 1000 9.45      
4 A1 395 393 5.05      
5 A1 210 209 0.01      
6 A2 293 291 0.00      
7 E 3062 3046 3.96      
7 E 3062 3046 3.96      
8 E 1435 1427 2.11      
8 E 1435 1427 2.11      
9 E 1054 1048 42.09      
9 E 1054 1048 42.05      
10 E 561 558 93.71      
10 E 561 558 93.63      
11 E 268 266 2.82      
11 E 268 266 2.83      
12 E 145 144 0.00      
12 E 145 144 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 9650.4 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 9597.3 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 BLYP/6-31G(2df,p)
ABC
0.03494 0.03494 0.02076

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G(2df,p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.463
C2 0.000 0.000 1.991
Br3 0.000 1.848 -0.208
Br4 1.600 -0.924 -0.208
Br5 -1.600 -0.924 -0.208
H6 0.000 -1.035 2.361
H7 0.896 0.518 2.361
H8 -0.896 0.518 2.361

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.52851.96591.96591.96592.16192.16192.1619
C21.52852.87232.87232.87231.09911.09911.0991
Br31.96592.87233.20093.20093.86123.02813.0281
Br41.96592.87233.20093.20093.02813.02813.8612
Br51.96592.87233.20093.20093.02813.86123.0281
H62.16191.09913.86123.02813.02811.79291.7929
H72.16191.09913.02813.02813.86121.79291.7929
H82.16191.09913.02813.86123.02811.79291.7929

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 109.643 C1 C2 H7 109.643
C1 C2 H8 109.643 C2 C1 Br3 109.935
C2 C1 Br4 109.935 C2 C1 Br5 109.935
Br3 C1 Br4 109.003 Br3 C1 Br5 109.003
Br4 C1 Br5 109.003 H6 C2 H7 109.299
H6 C2 H8 109.299 H7 C2 H8 109.299
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.269      
2 C -0.326      
3 Br 0.058      
4 Br 0.058      
5 Br 0.058      
6 H 0.140      
7 H 0.140      
8 H 0.140      


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 1.599 1.599
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -66.857 0.000 0.000
y 0.000 -66.857 0.000
z 0.000 0.000 -63.545
Traceless
 xyz
x -1.656 0.000 0.000
y 0.000 -1.656 0.000
z 0.000 0.000 3.312
Polar
3z2-r26.624
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 13.265 0.000 0.000
y 0.000 13.265 -0.000
z 0.000 -0.000 10.468


<r2> (average value of r2) Å2
<r2> 449.210
(<r2>)1/2 21.195