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

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/cc-pVDZ
 hartrees
Energy at 0K-7799.134726
Energy at 298.15K-7799.146278
HF Energy-7799.134726
Nuclear repulsion energy966.358551
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 PBEPBEultrafine/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 2985 2968 1.85      
2 A1 1327 1319 8.31      
3 A1 1044 1038 16.08      
4 A1 402 399 6.80      
5 A1 209 208 0.02      
6 A2 301 299 0.00      
7 E 3086 3068 1.40      
7 E 3086 3068 1.40      
8 E 1389 1381 2.80      
8 E 1389 1381 2.80      
9 E 1030 1024 57.57      
9 E 1030 1024 57.57      
10 E 578 575 111.06      
10 E 578 575 111.06      
11 E 269 268 3.28      
11 E 269 268 3.28      
12 E 143 142 0.00      
12 E 143 142 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 9629.8 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 9574.0 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 PBEPBEultrafine/cc-pVDZ
ABC
0.03464 0.03464 0.02054

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/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 1.985
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
C11.51821.97691.97691.97692.15762.15762.1576
C21.51822.87422.87422.87421.10721.10721.1072
Br31.97692.87423.21853.21853.87153.02853.0285
Br41.97692.87423.21853.21853.02853.02853.8715
Br51.97692.87423.21853.21853.02853.87153.0285
H62.15761.10723.87153.02853.02851.80741.8074
H72.15761.10723.02853.02853.87151.80741.8074
H82.15761.10723.02853.87153.02851.80741.8074

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 109.535 C1 C2 H7 109.535
C1 C2 H8 109.535 C2 C1 Br3 109.953
C2 C1 Br4 109.953 C2 C1 Br5 109.953
Br3 C1 Br4 108.986 Br3 C1 Br5 108.986
Br4 C1 Br5 108.986 H6 C2 H7 109.407
H6 C2 H8 109.407 H7 C2 H8 109.407
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.438      
2 C 0.084      
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 1.636 1.636
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -66.475 0.000 0.000
y 0.000 -66.475 0.000
z 0.000 0.000 -63.772
Traceless
 xyz
x -1.351 0.000 0.000
y 0.000 -1.351 0.000
z 0.000 0.000 2.703
Polar
3z2-r25.405
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 11.522 0.000 0.000
y 0.000 11.521 0.000
z 0.000 0.000 8.715


<r2> (average value of r2) Å2
<r2> 452.899
(<r2>)1/2 21.281