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

using model chemistry: B1B95/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B1B95/TZVP
 hartrees
Energy at 0K-7801.501507
Energy at 298.15K-7801.513218
HF Energy-7801.501507
Nuclear repulsion energy979.991157
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 B1B95/TZVP
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 3080 2948 2.27      
2 A1 1415 1354 8.04      
3 A1 1079 1032 8.46      
4 A1 413 395 5.27      
5 A1 216 207 0.04      
6 A2 313 300 0.00      
7 E 3172 3035 1.97      
7 E 3172 3035 1.98      
8 E 1473 1410 3.28      
8 E 1473 1410 3.28      
9 E 1091 1044 56.22      
9 E 1091 1044 56.02      
10 E 629 601 92.40      
10 E 628 601 92.06      
11 E 275 263 1.75      
11 E 275 263 1.75      
12 E 147 141 0.01      
12 E 147 141 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 10043.7 cm-1
Scaled (by 0.9569) Zero Point Vibrational Energy (zpe) 9610.8 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 B1B95/TZVP
ABC
0.03562 0.03562 0.02112

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/TZVP

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 1.959
Br3 0.000 1.833 -0.204
Br4 1.587 -0.916 -0.204
Br5 -1.587 -0.916 -0.204
H6 0.000 -1.024 2.325
H7 0.887 0.512 2.325
H8 -0.887 0.512 2.325

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.50411.94751.94751.94752.13202.13202.1320
C21.50412.83492.83492.83491.08741.08741.0874
Br31.94752.83493.17423.17423.81522.98762.9876
Br41.94752.83493.17423.17422.98762.98763.8152
Br51.94752.83493.17423.17422.98763.81522.9876
H62.13201.08743.81522.98762.98761.77361.7736
H72.13201.08742.98762.98763.81521.77361.7736
H82.13201.08742.98763.81522.98761.77361.7736

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 109.664 C1 C2 H7 109.664
C1 C2 H8 109.664 C2 C1 Br3 109.773
C2 C1 Br4 109.773 C2 C1 Br5 109.773
Br3 C1 Br4 109.167 Br3 C1 Br5 109.167
Br4 C1 Br5 109.168 H6 C2 H7 109.277
H6 C2 H8 109.277 H7 C2 H8 109.277
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.074      
2 C -0.364      
3 Br -0.014      
4 Br -0.014      
5 Br -0.014      
6 H 0.160      
7 H 0.160      
8 H 0.160      


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 1.679 1.679
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -67.040 0.000 0.000
y 0.000 -67.040 0.000
z 0.000 0.000 -64.266
Traceless
 xyz
x -1.387 0.000 0.000
y 0.000 -1.387 0.000
z 0.000 0.000 2.775
Polar
3z2-r25.549
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 12.300 0.000 0.000
y 0.000 12.303 0.000
z 0.000 0.000 9.285


<r2> (average value of r2) Å2
<r2> 441.943
(<r2>)1/2 21.022