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

using model chemistry: PBEPBE/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at PBEPBE/cc-pVDZ
 hartrees
Energy at 0K-7799.134739
Energy at 298.15K-7799.146290
HF Energy-7799.134739
Nuclear repulsion energy966.221014
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 PBEPBE/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 2986 2968 1.83      
2 A1 1327 1319 8.32      
3 A1 1044 1038 16.10      
4 A1 401 398 6.84      
5 A1 209 208 0.01      
6 A2 301 300 0.00      
7 E 3086 3068 1.40      
7 E 3086 3068 1.40      
8 E 1390 1382 2.77      
8 E 1390 1382 2.77      
9 E 1030 1024 57.45      
9 E 1030 1024 57.44      
10 E 577 573 111.23      
10 E 577 573 111.25      
11 E 269 268 3.44      
11 E 269 268 3.44      
12 E 143 143 0.01      
12 E 143 143 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 9629.7 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 9573.8 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 PBEPBE/cc-pVDZ
ABC
0.03463 0.03463 0.02053

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/cc-pVDZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.467
C2 0.000 0.000 1.986
Br3 0.000 1.858 -0.207
Br4 1.609 -0.929 -0.207
Br5 -1.609 -0.929 -0.207
H6 0.000 -1.043 2.356
H7 0.904 0.522 2.356
H8 -0.904 0.522 2.356

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.51811.97721.97721.97722.15742.15742.1574
C21.51812.87462.87462.87461.10721.10721.1072
Br31.97722.87463.21903.21903.87183.02873.0287
Br41.97722.87463.21903.21903.02873.02873.8718
Br51.97722.87463.21903.21903.02873.87183.0287
H62.15741.10723.87183.02873.02871.80741.8074
H72.15741.10723.02873.02873.87181.80741.8074
H82.15741.10723.02873.87183.02871.80741.8074

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 109.530 C1 C2 H7 109.530
C1 C2 H8 109.530 C2 C1 Br3 109.959
C2 C1 Br4 109.959 C2 C1 Br5 109.959
Br3 C1 Br4 108.979 Br3 C1 Br5 108.979
Br4 C1 Br5 108.979 H6 C2 H7 109.412
H6 C2 H8 109.412 H7 C2 H8 109.412
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.437      
2 C 0.085      
3 Br 0.046      
4 Br 0.046      
5 Br 0.046      
6 H 0.071      
7 H 0.071      
8 H 0.071      


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 1.637 1.637
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -66.476 0.000 0.000
y 0.000 -66.476 0.000
z 0.000 0.000 -63.769
Traceless
 xyz
x -1.353 0.000 0.000
y 0.000 -1.353 0.000
z 0.000 0.000 2.707
Polar
3z2-r25.413
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 11.525 0.000 0.000
y 0.000 11.525 0.000
z 0.000 0.000 8.716


<r2> (average value of r2) Å2
<r2> 453.015
(<r2>)1/2 21.284