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

using model chemistry: HF/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 HF/cc-pVDZ
 hartrees
Energy at 0K-7794.620945
Energy at 298.15K-7794.632974
HF Energy-7794.620945
Nuclear repulsion energy978.038044
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 HF/cc-pVDZ
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 3209 2913 6.69      
2 A1 1520 1380 1.64      
3 A1 1136 1032 3.50      
4 A1 444 403 5.96      
5 A1 235 214 0.04      
6 A2 340 309 0.00      
7 E 3308 3003 3.69      
7 E 3308 3003 3.69      
8 E 1579 1434 3.15      
8 E 1579 1434 3.15      
9 E 1182 1073 57.89      
9 E 1182 1073 57.89      
10 E 709 644 89.07      
10 E 709 644 89.07      
11 E 300 272 1.63      
11 E 300 272 1.63      
12 E 165 149 0.03      
12 E 165 149 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 10682.7 cm-1
Scaled (by 0.908) Zero Point Vibrational Energy (zpe) 9699.9 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 HF/cc-pVDZ
ABC
0.03546 0.03546 0.02107

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.456
C2 0.000 0.000 1.976
Br3 0.000 1.835 -0.206
Br4 1.589 -0.917 -0.206
Br5 -1.589 -0.917 -0.206
H6 0.000 -1.027 2.339
H7 0.889 0.513 2.339
H8 -0.889 0.513 2.339

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.52021.95031.95031.95032.14462.14462.1446
C21.52022.85062.85062.85061.08881.08881.0888
Br31.95032.85063.17773.17773.82893.00183.0018
Br41.95032.85063.17773.17773.00183.00183.8289
Br51.95032.85063.17773.17773.00183.82893.0018
H62.14461.08883.82893.00183.00181.77811.7781
H72.14461.08883.00183.00183.82891.77811.7781
H82.14461.08883.00183.82893.00181.77811.7781

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 109.458 C1 C2 H7 109.458
C1 C2 H8 109.458 C2 C1 Br3 109.829
C2 C1 Br4 109.829 C2 C1 Br5 109.829
Br3 C1 Br4 109.112 Br3 C1 Br5 109.112
Br4 C1 Br5 109.112 H6 C2 H7 109.484
H6 C2 H8 109.484 H7 C2 H8 109.484
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.441      
2 C 0.111      
3 Br 0.039      
4 Br 0.039      
5 Br 0.039      
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 1.815 1.815
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -67.800 0.000 0.000
y 0.000 -67.800 0.000
z 0.000 0.000 -64.718
Traceless
 xyz
x -1.541 0.000 0.000
y 0.000 -1.541 0.000
z 0.000 0.000 3.083
Polar
3z2-r26.166
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 10.712 0.000 0.000
y 0.000 10.712 0.000
z 0.000 0.000 7.909


<r2> (average value of r2) Å2
<r2> 443.810
(<r2>)1/2 21.067