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

using model chemistry: HF/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 HF/LANL2DZ
 hartrees
Energy at 0K-116.193770
Energy at 298.15K-116.205628
HF Energy-116.193770
Nuclear repulsion energy116.561810
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 HF/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 3233 2910 13.97      
2 A1 1581 1423 5.11      
3 A1 1128 1015 2.60      
4 A1 410 369 7.16      
5 A1 223 200 0.00      
6 A2 336 302 0.00      
7 E 3338 3003 8.20      
7 E 3338 3003 8.20      
8 E 1628 1465 7.35      
8 E 1628 1465 7.35      
9 E 1222 1099 79.88      
9 E 1222 1099 79.88      
10 E 651 586 87.77      
10 E 651 586 87.77      
11 E 292 263 1.90      
11 E 292 263 1.90      
12 E 157 141 0.05      
12 E 157 141 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 10742.8 cm-1
Scaled (by 0.8999) Zero Point Vibrational Energy (zpe) 9667.5 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 HF/LANL2DZ
ABC
0.03351 0.03351 0.01979

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.469
C2 0.000 0.000 1.997
Br3 0.000 1.893 -0.209
Br4 1.640 -0.947 -0.209
Br5 -1.640 -0.947 -0.209
H6 0.000 -1.016 2.367
H7 0.880 0.508 2.367
H8 -0.880 0.508 2.367

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.52812.01092.01092.01092.15262.15262.1526
C21.52812.90682.90682.90681.08091.08091.0809
Br32.01092.90683.27923.27923.88533.05403.0540
Br42.01092.90683.27923.27923.05403.05403.8853
Br52.01092.90683.27923.27923.05403.88533.0540
H62.15261.08093.88533.05403.05401.75921.7592
H72.15261.08093.05403.05403.88531.75921.7592
H82.15261.08093.05403.88533.05401.75921.7592

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 110.010 C1 C2 H7 110.010
C1 C2 H8 110.010 C2 C1 Br3 109.692
C2 C1 Br4 109.692 C2 C1 Br5 109.692
Br3 C1 Br4 109.249 Br3 C1 Br5 109.249
Br4 C1 Br5 109.249 H6 C2 H7 108.927
H6 C2 H8 108.927 H7 C2 H8 108.927
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.515      
2 C -0.396      
3 Br 0.083      
4 Br 0.083      
5 Br 0.083      
6 H 0.221      
7 H 0.221      
8 H 0.221      


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 2.299 2.299
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -60.329 0.000 0.000
y 0.000 -60.329 0.000
z 0.000 0.000 -55.923
Traceless
 xyz
x -2.203 0.000 0.000
y 0.000 -2.203 0.000
z 0.000 0.000 4.406
Polar
3z2-r28.812
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 10.421 0.000 0.000
y 0.000 10.421 0.000
z 0.000 0.000 5.535


<r2> (average value of r2) Å2
<r2> 158.105
(<r2>)1/2 12.574