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

using model chemistry: B1B95/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B1B95/6-31+G**
 hartrees
Energy at 0K-7794.113467
Energy at 298.15K-7794.125303
HF Energy-7794.113467
Nuclear repulsion energy986.778702
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 B1B95/6-31+G**
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 3086 2952 2.73      
2 A1 1418 1356 11.71      
3 A1 1091 1044 5.95      
4 A1 424 406 5.12      
5 A1 224 214 0.06      
6 A2 355 340 0.00      
7 E 3185 3047 1.62      
7 E 3185 3047 1.64      
8 E 1488 1423 4.73      
8 E 1488 1423 4.73      
9 E 1096 1048 50.83      
9 E 1096 1048 50.63      
10 E 642 614 86.96      
10 E 642 614 86.62      
11 E 286 274 1.49      
11 E 286 274 1.49      
12 E 155 149 0.03      
12 E 155 149 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 10150.7 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 9710.2 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 B1B95/6-31+G**
ABC
0.03610 0.03610 0.02150

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.461
C2 0.000 0.000 1.968
Br3 0.000 1.816 -0.205
Br4 1.573 -0.908 -0.205
Br5 -1.573 -0.908 -0.205
H6 0.000 -1.028 2.332
H7 0.890 0.514 2.332
H8 -0.890 0.514 2.332

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.50651.93471.93471.93472.13412.13412.1341
C21.50652.83232.83232.83231.09031.09031.0903
Br31.93472.83233.14563.14563.81112.98752.9875
Br41.93472.83233.14563.14562.98752.98753.8111
Br51.93472.83233.14563.14562.98753.81112.9875
H62.13411.09033.81112.98752.98751.78021.7802
H72.13411.09032.98752.98753.81111.78021.7802
H82.13411.09032.98753.81112.98751.78021.7802

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 109.490 C1 C2 H7 109.490
C1 C2 H8 109.490 C2 C1 Br3 110.161
C2 C1 Br4 110.161 C2 C1 Br5 110.161
Br3 C1 Br4 108.773 Br3 C1 Br5 108.773
Br4 C1 Br5 108.773 H6 C2 H7 109.452
H6 C2 H8 109.452 H7 C2 H8 109.452
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.413      
2 C -0.330      
3 Br 0.045      
4 Br 0.045      
5 Br 0.045      
6 H 0.202      
7 H 0.202      
8 H 0.202      


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 1.692 1.692
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -67.447 0.000 0.000
y 0.000 -67.447 0.000
z 0.000 0.000 -64.343
Traceless
 xyz
x -1.552 0.000 0.000
y 0.000 -1.552 0.000
z 0.000 0.000 3.104
Polar
3z2-r26.208
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 12.976 0.000 0.000
y 0.000 12.979 0.000
z 0.000 0.000 10.279


<r2> (average value of r2) Å2
<r2> 436.223
(<r2>)1/2 20.886