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

using model chemistry: TPSSh/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at TPSSh/cc-pVTZ
 hartrees
Energy at 0K-7800.392450
Energy at 298.15K-7800.404053
HF Energy-7800.392450
Nuclear repulsion energy974.180188
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 TPSSh/cc-pVTZ
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 3041 2945 3.06      
2 A1 1411 1367 4.81      
3 A1 1043 1010 8.46      
4 A1 401 388 5.32      
5 A1 211 204 0.04      
6 A2 299 290 0.00      
7 E 3126 3027 3.51      
7 E 3126 3027 3.52      
8 E 1484 1437 2.52      
8 E 1484 1437 2.52      
9 E 1085 1050 50.57      
9 E 1085 1050 50.48      
10 E 596 577 97.88      
10 E 596 577 97.72      
11 E 267 258 2.31      
11 E 267 258 2.30      
12 E 143 139 0.00      
12 E 143 139 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 9902.7 cm-1
Scaled (by 0.9683) Zero Point Vibrational Energy (zpe) 9588.8 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 TPSSh/cc-pVTZ
ABC
0.03519 0.03519 0.02088

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.455
C2 0.000 0.000 1.972
Br3 0.000 1.848 -0.205
Br4 1.601 -0.924 -0.205
Br5 -1.601 -0.924 -0.205
H6 0.000 -1.028 2.334
H7 0.891 0.514 2.334
H8 -0.891 0.514 2.334

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.51691.96271.96271.96272.14152.14152.1415
C21.51692.85622.85622.85621.09001.09001.0900
Br31.96272.85623.20113.20113.83693.00343.0034
Br41.96272.85623.20113.20113.00343.00343.8369
Br51.96272.85623.20113.20113.00343.83693.0034
H62.14151.09003.83693.00343.00341.78111.7811
H72.14151.09003.00343.00343.83691.78111.7811
H82.14151.09003.00343.83693.00341.78111.7811

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 109.370 C1 C2 H7 109.370
C1 C2 H8 109.370 C2 C1 Br3 109.675
C2 C1 Br4 109.675 C2 C1 Br5 109.675
Br3 C1 Br4 109.267 Br3 C1 Br5 109.267
Br4 C1 Br5 109.267 H6 C2 H7 109.572
H6 C2 H8 109.572 H7 C2 H8 109.572
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.116      
2 C -0.164      
3 Br -0.017      
4 Br -0.017      
5 Br -0.017      
6 H 0.110      
7 H 0.110      
8 H 0.110      


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 1.723 1.723
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 13.016 0.000 0.000
y 0.000 13.017 0.000
z 0.000 0.000 10.187


<r2> (average value of r2) Å2
<r2> 446.762
(<r2>)1/2 21.137