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

using model chemistry: HSEh1PBE/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 HSEh1PBE/cc-pVTZ
 hartrees
Energy at 0K-7799.601676
Energy at 298.15K-7799.613415
HF Energy-7799.601676
Nuclear repulsion energy980.303465
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 HSEh1PBE/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 3063 2944 1.92      
2 A1 1406 1351 9.55      
3 A1 1075 1033 7.93      
4 A1 418 401 4.45      
5 A1 219 210 0.03      
6 A2 310 298 0.00      
7 E 3153 3030 2.01      
7 E 3153 3030 2.01      
8 E 1468 1411 3.45      
8 E 1468 1411 3.45      
9 E 1086 1044 51.29      
9 E 1086 1044 51.27      
10 E 631 606 84.53      
10 E 631 606 84.48      
11 E 279 268 2.09      
11 E 279 268 2.09      
12 E 149 144 0.01      
12 E 149 144 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 10011.1 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 9621.7 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 HSEh1PBE/cc-pVTZ
ABC
0.03564 0.03564 0.02115

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.457
C2 0.000 0.000 1.963
Br3 0.000 1.831 -0.205
Br4 1.586 -0.916 -0.205
Br5 -1.586 -0.916 -0.205
H6 0.000 -1.026 2.329
H7 0.889 0.513 2.329
H8 -0.889 0.513 2.329

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.50641.94701.94701.94702.13512.13512.1351
C21.50642.83782.83782.83781.08971.08971.0897
Br31.94702.83783.17173.17173.81912.99112.9911
Br41.94702.83783.17173.17172.99112.99113.8191
Br51.94702.83783.17173.17172.99113.81912.9911
H62.13511.08973.81912.99112.99111.77791.7779
H72.13511.08972.99112.99113.81911.77791.7779
H82.13511.08972.99113.81912.99111.77791.7779

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 109.615 C1 C2 H7 109.615
C1 C2 H8 109.615 C2 C1 Br3 109.862
C2 C1 Br4 109.862 C2 C1 Br5 109.862
Br3 C1 Br4 109.077 Br3 C1 Br5 109.077
Br4 C1 Br5 109.077 H6 C2 H7 109.327
H6 C2 H8 109.327 H7 C2 H8 109.327
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.134      
2 C -0.246      
3 Br -0.006      
4 Br -0.006      
5 Br -0.006      
6 H 0.132      
7 H 0.132      
8 H 0.132      


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 1.681 1.681
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -67.425 0.000 0.000
y 0.000 -67.425 0.000
z 0.000 0.000 -64.309
Traceless
 xyz
x -1.558 0.000 0.000
y 0.000 -1.558 0.000
z 0.000 0.000 3.116
Polar
3z2-r26.232
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 12.793 0.000 0.000
y 0.000 12.793 -0.001
z 0.000 -0.001 10.104


<r2> (average value of r2) Å2
<r2> 441.760
(<r2>)1/2 21.018