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

using model chemistry: PBEPBE/6-31G*

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/6-31G*
 hartrees
Energy at 0K-7791.811404
Energy at 298.15K-7791.822973
HF Energy-7791.811404
Nuclear repulsion energy970.864377
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/6-31G*
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 3005 2962 2.05      
2 A1 1383 1364 10.44      
3 A1 1049 1034 11.77      
4 A1 403 398 6.53      
5 A1 213 210 0.03      
6 A2 304 299 0.00      
7 E 3095 3050 2.27      
7 E 3095 3050 2.27      
8 E 1455 1434 3.50      
8 E 1455 1434 3.50      
9 E 1061 1046 53.07      
9 E 1061 1046 53.06      
10 E 581 572 104.48      
10 E 581 572 104.51      
11 E 271 267 2.84      
11 E 271 267 2.85      
12 E 149 147 0.00      
12 E 149 147 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 9789.2 cm-1
Scaled (by 0.9857) Zero Point Vibrational Energy (zpe) 9649.2 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 PBEPBE/6-31G*
ABC
0.03496 0.03496 0.02077

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.470
C2 0.000 0.000 1.987
Br3 0.000 1.848 -0.208
Br4 1.600 -0.924 -0.208
Br5 -1.600 -0.924 -0.208
H6 0.000 -1.037 2.358
H7 0.898 0.519 2.358
H8 -0.898 0.519 2.358

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.51701.96821.96821.96822.15412.15412.1541
C21.51702.86932.86932.86931.10161.10161.1016
Br31.96822.86933.20033.20033.86113.02623.0262
Br41.96822.86933.20033.20033.02623.02623.8611
Br51.96822.86933.20033.20033.02623.86113.0262
H62.15411.10163.86113.02623.02621.79681.7968
H72.15411.10163.02623.02623.86111.79681.7968
H82.15411.10163.02623.86113.02621.79681.7968

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 109.670 C1 C2 H7 109.670
C1 C2 H8 109.670 C2 C1 Br3 110.156
C2 C1 Br4 110.156 C2 C1 Br5 110.156
Br3 C1 Br4 108.778 Br3 C1 Br5 108.778
Br4 C1 Br5 108.778 H6 C2 H7 109.272
H6 C2 H8 109.272 H7 C2 H8 109.272
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.095      
2 C -0.465      
3 Br -0.018      
4 Br -0.018      
5 Br -0.018      
6 H 0.205      
7 H 0.205      
8 H 0.205      


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 1.657 1.657
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -66.331 0.000 0.000
y 0.000 -66.331 0.000
z 0.000 0.000 -63.421
Traceless
 xyz
x -1.455 0.000 0.000
y 0.000 -1.455 0.000
z 0.000 0.000 2.910
Polar
3z2-r25.820
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 11.867 0.000 0.000
y 0.000 11.867 0.000
z 0.000 0.000 9.029


<r2> (average value of r2) Å2
<r2> 448.761
(<r2>)1/2 21.184