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

using model chemistry: B3LYP/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B3LYP/CEP-121G
 hartrees
Energy at 0K-53.197430
Energy at 298.15K-53.208995
HF Energy-53.197430
Nuclear repulsion energy85.742810
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 B3LYP/CEP-121G
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 3016 2939 6.44      
2 A1 1441 1404 8.89      
3 A1 1045 1018 11.88      
4 A1 382 372 9.03      
5 A1 203 198 0.00      
6 A2 302 294 0.00      
7 E 3120 3040 6.53      
7 E 3120 3040 6.52      
8 E 1492 1454 3.76      
8 E 1492 1454 3.76      
9 E 1105 1077 77.42      
9 E 1105 1077 77.40      
10 E 579 564 135.13      
10 E 579 564 135.09      
11 E 267 260 2.99      
11 E 267 260 2.99      
12 E 141 137 0.00      
12 E 141 137 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 9897.6 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 9645.2 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 B3LYP/CEP-121G
ABC
0.03292 0.03292 0.01944

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.477
C2 0.000 0.000 2.015
Br3 0.000 1.910 -0.211
Br4 1.654 -0.955 -0.211
Br5 -1.654 -0.955 -0.211
H6 0.000 -1.030 2.385
H7 0.892 0.515 2.385
H8 -0.892 0.515 2.385

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.53742.03022.03022.03022.16812.16812.1681
C21.53742.93272.93272.93271.09491.09491.0949
Br32.03022.93273.30843.30843.92213.07873.0787
Br42.03022.93273.30843.30843.07873.07873.9221
Br52.03022.93273.30843.30843.07873.92213.0787
H62.16811.09493.92213.07873.07871.78481.7848
H72.16811.09493.07873.07873.92211.78481.7848
H82.16811.09493.07873.92213.07871.78481.7848

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 109.757 C1 C2 H7 109.757
C1 C2 H8 109.757 C2 C1 Br3 109.807
C2 C1 Br4 109.807 C2 C1 Br5 109.807
Br3 C1 Br4 109.134 Br3 C1 Br5 109.134
Br4 C1 Br5 109.134 H6 C2 H7 109.184
H6 C2 H8 109.184 H7 C2 H8 109.184
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.689      
2 C -0.402      
3 Br 0.164      
4 Br 0.164      
5 Br 0.164      
6 H 0.199      
7 H 0.199      
8 H 0.199      


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 1.982 1.982
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -58.318 0.000 0.000
y 0.000 -58.318 0.000
z 0.000 0.000 -54.472
Traceless
 xyz
x -1.923 0.000 0.000
y 0.000 -1.923 0.000
z 0.000 0.000 3.846
Polar
3z2-r27.692
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 11.372 0.000 0.000
y 0.000 11.373 -0.000
z 0.000 -0.000 7.466


<r2> (average value of r2) Å2
<r2> 150.569
(<r2>)1/2 12.271