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

using model chemistry: B3LYP/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B3LYP/3-21G
 hartrees
Energy at 0K-7762.989743
Energy at 298.15K-7763.001484
HF Energy-7762.989743
Nuclear repulsion energy955.617550
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 B3LYP/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3075 2967 2.59      
2 A1 1475 1423 13.29      
3 A1 1044 1008 12.98      
4 A1 402 388 7.03      
5 A1 213 206 0.04      
6 A2 317 306 0.00      
7 E 3152 3042 2.82      
7 E 3152 3042 2.82      
8 E 1540 1486 3.52      
8 E 1540 1486 3.52      
9 E 1137 1097 64.93      
9 E 1137 1097 64.93      
10 E 637 615 104.52      
10 E 637 615 104.55      
11 E 287 277 1.53      
11 E 287 277 1.53      
12 E 147 142 0.04      
12 E 147 142 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 10162.7 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 9806.0 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 B3LYP/3-21G
ABC
0.03387 0.03387 0.01994

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.454
C2 0.000 0.000 1.972
Br3 0.000 1.886 -0.205
Br4 1.633 -0.943 -0.205
Br5 -1.633 -0.943 -0.205
H6 0.000 -1.029 2.340
H7 0.892 0.515 2.340
H8 -0.892 0.515 2.340

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.51881.99771.99771.99772.14922.14922.1492
C21.51882.88092.88092.88091.09321.09321.0932
Br31.99772.88093.26653.26653.87033.02583.0258
Br41.99772.88093.26653.26653.02583.02583.8703
Br51.99772.88093.26653.26653.02583.87033.0258
H62.14921.09323.87033.02583.02581.78301.7830
H72.14921.09323.02583.02583.87031.78301.7830
H82.14921.09323.02583.87033.02581.78301.7830

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 109.663 C1 C2 H7 109.663
C1 C2 H8 109.663 C2 C1 Br3 109.261
C2 C1 Br4 109.261 C2 C1 Br5 109.261
Br3 C1 Br4 109.681 Br3 C1 Br5 109.681
Br4 C1 Br5 109.681 H6 C2 H7 109.279
H6 C2 H8 109.279 H7 C2 H8 109.279
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.708      
2 C -0.496      
3 Br 0.166      
4 Br 0.166      
5 Br 0.166      
6 H 0.236      
7 H 0.236      
8 H 0.236      


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 1.707 1.707
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 -64.063
Traceless
 xyz
x -1.397 0.000 0.000
y 0.000 -1.397 0.000
z 0.000 0.000 2.794
Polar
3z2-r25.589
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 9.756 0.000 0.000
y 0.000 9.756 0.000
z 0.000 0.000 5.989


<r2> (average value of r2) Å2
<r2> 463.243
(<r2>)1/2 21.523