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

using model chemistry: B1B95/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B1B95/6-31G*
 hartrees
Energy at 0K-7794.052505
Energy at 298.15K-7794.064225
HF Energy-7794.052505
Nuclear repulsion energy983.499543
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 B1B95/6-31G*
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 3098 2941 2.46      
2 A1 1433 1361 9.85      
3 A1 1093 1037 7.09      
4 A1 418 397 6.15      
5 A1 222 211 0.08      
6 A2 309 293 0.00      
7 E 3193 3031 2.08      
7 E 3193 3031 2.09      
8 E 1502 1426 3.87      
8 E 1502 1426 3.86      
9 E 1099 1043 51.03      
9 E 1099 1043 50.85      
10 E 634 602 88.72      
10 E 634 602 88.40      
11 E 276 262 1.59      
11 E 276 262 1.59      
12 E 155 147 0.02      
12 E 155 147 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 10146.0 cm-1
Scaled (by 0.9493) Zero Point Vibrational Energy (zpe) 9631.6 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 B1B95/6-31G*
ABC
0.03587 0.03587 0.02133

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.460
C2 0.000 0.000 1.968
Br3 0.000 1.823 -0.205
Br4 1.579 -0.912 -0.205
Br5 -1.579 -0.912 -0.205
H6 0.000 -1.028 2.335
H7 0.890 0.514 2.335
H8 -0.890 0.514 2.335

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.50811.94091.94091.94092.13772.13772.1377
C21.50812.83712.83712.83711.09101.09101.0910
Br31.94092.83713.15793.15793.81832.99312.9931
Br41.94092.83713.15793.15792.99312.99313.8183
Br51.94092.83713.15793.15792.99313.81832.9931
H62.13771.09103.81832.99312.99311.77991.7799
H72.13771.09102.99312.99313.81831.77991.7799
H82.13771.09102.99313.81832.99311.77991.7799

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 109.623 C1 C2 H7 109.623
C1 C2 H8 109.623 C2 C1 Br3 110.056
C2 C1 Br4 110.056 C2 C1 Br5 110.056
Br3 C1 Br4 108.880 Br3 C1 Br5 108.880
Br4 C1 Br5 108.880 H6 C2 H7 109.319
H6 C2 H8 109.319 H7 C2 H8 109.319
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.111      
2 C -0.467      
3 Br -0.017      
4 Br -0.017      
5 Br -0.017      
6 H 0.210      
7 H 0.210      
8 H 0.210      


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 1.636 1.636
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -66.169 0.000 0.000
y 0.000 -66.169 0.000
z 0.000 0.000 -63.387
Traceless
 xyz
x -1.391 0.000 0.000
y 0.000 -1.391 0.000
z 0.000 0.000 2.782
Polar
3z2-r25.564
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 11.364 0.000 0.000
y 0.000 11.366 0.000
z 0.000 0.000 8.681


<r2> (average value of r2) Å2
<r2> 438.241
(<r2>)1/2 20.934