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

using model chemistry: HF/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-7794.737363
Energy at 298.15K-7794.749388
HF Energy-7794.737363
Nuclear repulsion energy981.796133
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/Def2TZVPP
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 3193 2894 5.96      
2 A1 1545 1400 2.23      
3 A1 1123 1018 2.14      
4 A1 445 403 4.67      
5 A1 236 214 0.05      
6 A2 336 305 0.00      
7 E 3274 2968 5.35      
7 E 3274 2968 5.35      
8 E 1601 1452 3.06      
8 E 1601 1452 3.06      
9 E 1194 1082 49.36      
9 E 1194 1082 49.36      
10 E 717 650 75.33      
10 E 717 650 75.33      
11 E 299 271 1.38      
11 E 299 271 1.38      
12 E 164 149 0.04      
12 E 164 149 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 10687.5 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 9687.2 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 HF/Def2TZVPP
ABC
0.03573 0.03573 0.02123

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.450
C2 0.000 0.000 1.968
Br3 0.000 1.828 -0.205
Br4 1.584 -0.914 -0.205
Br5 -1.584 -0.914 -0.205
H6 0.000 -1.018 2.328
H7 0.882 0.509 2.328
H8 -0.882 0.509 2.328

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.51741.94221.94221.94222.13652.13652.1365
C21.51742.83942.83942.83941.08021.08021.0802
Br31.94222.83943.16703.16703.81052.98912.9891
Br41.94222.83943.16703.16702.98912.98913.8105
Br51.94222.83943.16703.16702.98913.81052.9891
H62.13651.08023.81052.98912.98911.76351.7635
H72.13651.08022.98912.98913.81051.76351.7635
H82.13651.08022.98913.81052.98911.76351.7635

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 109.517 C1 C2 H7 109.517
C1 C2 H8 109.517 C2 C1 Br3 109.703
C2 C1 Br4 109.703 C2 C1 Br5 109.703
Br3 C1 Br4 109.238 Br3 C1 Br5 109.238
Br4 C1 Br5 109.238 H6 C2 H7 109.425
H6 C2 H8 109.425 H7 C2 H8 109.425
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.180      
2 C -0.221      
3 Br -0.078      
4 Br -0.078      
5 Br -0.078      
6 H 0.092      
7 H 0.092      
8 H 0.092      


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 1.782 1.782
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -68.333 0.000 0.000
y 0.000 -68.333 0.000
z 0.000 0.000 -64.845
Traceless
 xyz
x -1.744 0.000 0.000
y 0.000 -1.744 0.000
z 0.000 0.000 3.487
Polar
3z2-r26.974
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 12.684 0.000 0.000
y 0.000 12.684 0.000
z 0.000 0.000 9.952


<r2> (average value of r2) Å2
<r2> 441.027
(<r2>)1/2 21.001