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

using model chemistry: B3LYP/LANL2DZ

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/LANL2DZ
 hartrees
Energy at 0K-117.474051
Energy at 298.15K-117.485588
HF Energy-117.474051
Nuclear repulsion energy115.445809
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/LANL2DZ
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 3065 2946 4.02      
2 A1 1450 1393 14.57      
3 A1 1060 1019 15.29      
4 A1 381 366 7.45      
5 A1 205 197 0.01      
6 A2 314 302 0.00      
7 E 3169 3046 5.59      
7 E 3169 3046 5.60      
8 E 1497 1438 7.42      
8 E 1497 1438 7.42      
9 E 1112 1069 85.00      
9 E 1112 1069 85.00      
10 E 564 542 105.75      
10 E 564 542 105.77      
11 E 272 261 3.96      
11 E 272 261 3.96      
12 E 143 137 0.00      
12 E 143 137 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 9992.4 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 9604.7 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/LANL2DZ
ABC
0.03279 0.03279 0.01934

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/LANL2DZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.481
C2 0.000 0.000 2.009
Br3 0.000 1.915 -0.210
Br4 1.659 -0.958 -0.210
Br5 -1.659 -0.958 -0.210
H6 0.000 -1.029 2.384
H7 0.891 0.515 2.384
H8 -0.891 0.515 2.384

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.52762.03642.03642.03642.16292.16292.1629
C21.52762.93142.93142.93141.09521.09521.0952
Br32.03642.93143.31753.31753.92413.07993.0799
Br42.03642.93143.31753.31753.07993.07993.9241
Br52.03642.93143.31753.31753.07993.92413.0799
H62.16291.09523.92413.07993.07991.78241.7824
H72.16291.09523.07993.07993.92411.78241.7824
H82.16291.09523.07993.92413.07991.78241.7824

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 110.017 C1 C2 H7 110.017
C1 C2 H8 110.017 C2 C1 Br3 109.853
C2 C1 Br4 109.853 C2 C1 Br5 109.853
Br3 C1 Br4 109.086 Br3 C1 Br5 109.086
Br4 C1 Br5 109.086 H6 C2 H7 108.920
H6 C2 H8 108.920 H7 C2 H8 108.920
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.457      
2 C -0.483      
3 Br 0.068      
4 Br 0.068      
5 Br 0.068      
6 H 0.245      
7 H 0.245      
8 H 0.245      


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 2.127 2.127
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -58.690 0.000 0.000
y 0.000 -58.690 0.000
z 0.000 0.000 -55.059
Traceless
 xyz
x -1.815 0.000 0.000
y 0.000 -1.815 0.000
z 0.000 0.000 3.630
Polar
3z2-r27.261
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 10.675 0.000 0.000
y 0.000 10.675 0.000
z 0.000 0.000 6.100


<r2> (average value of r2) Å2
<r2> 159.695
(<r2>)1/2 12.637