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

using model chemistry: mPW1PW91/aug-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 mPW1PW91/aug-cc-pVDZ
 hartrees
Energy at 0K-7800.961850
Energy at 298.15K-7800.973605
HF Energy-7800.961850
Nuclear repulsion energy978.238485
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 mPW1PW91/aug-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 3074 2946 1.84      
2 A1 1389 1331 10.06      
3 A1 1084 1038 7.11      
4 A1 421 404 4.44      
5 A1 220 211 0.02      
6 A2 311 298 0.00      
7 E 3176 3044 1.87      
7 E 3176 3044 1.87      
8 E 1451 1391 3.54      
8 E 1451 1391 3.54      
9 E 1074 1029 52.15      
9 E 1074 1029 52.10      
10 E 633 606 85.00      
10 E 633 606 85.11      
11 E 281 269 2.26      
11 E 281 269 2.26      
12 E 151 145 0.01      
12 E 151 145 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 10015.0 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 9597.4 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 mPW1PW91/aug-cc-pVDZ
ABC
0.03549 0.03549 0.02109

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVDZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.463
C2 0.000 0.000 1.975
Br3 0.000 1.834 -0.206
Br4 1.588 -0.917 -0.206
Br5 -1.588 -0.917 -0.206
H6 0.000 -1.033 2.340
H7 0.894 0.516 2.340
H8 -0.894 0.516 2.340

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.51181.95201.95201.95202.14202.14202.1420
C21.51182.84952.84952.84951.09531.09531.0953
Br31.95202.84953.17603.17603.83383.00283.0028
Br41.95202.84953.17603.17603.00283.00283.8338
Br51.95202.84953.17603.17603.00283.83383.0028
H62.14201.09533.83383.00283.00281.78881.7888
H72.14201.09533.00283.00283.83381.78881.7888
H82.14201.09533.00283.83383.00281.78881.7888

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 109.455 C1 C2 H7 109.455
C1 C2 H8 109.455 C2 C1 Br3 110.054
C2 C1 Br4 110.054 C2 C1 Br5 110.054
Br3 C1 Br4 108.882 Br3 C1 Br5 108.882
Br4 C1 Br5 108.882 H6 C2 H7 109.487
H6 C2 H8 109.487 H7 C2 H8 109.487
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -1.498      
2 C 0.952      
3 Br 0.258      
4 Br 0.258      
5 Br 0.258      
6 H -0.076      
7 H -0.076      
8 H -0.076      


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 1.713 1.713
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -67.571 0.000 0.000
y 0.000 -67.571 0.000
z 0.000 0.000 -64.152
Traceless
 xyz
x -1.709 0.000 0.000
y 0.000 -1.709 0.000
z 0.000 0.000 3.419
Polar
3z2-r26.838
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 14.151 0.000 0.000
y 0.000 14.154 -0.001
z 0.000 -0.001 11.508


<r2> (average value of r2) Å2
<r2> 443.311
(<r2>)1/2 21.055