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

using model chemistry: B1B95/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B1B95/6-31G
 hartrees
Energy at 0K-7793.638306
Energy at 298.15K-7793.650037
HF Energy-7793.638306
Nuclear repulsion energy969.707803
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 B1B95/6-31G
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 3099 2956 2.13      
2 A1 1479 1411 19.45      
3 A1 1120 1068 12.87      
4 A1 406 388 9.54      
5 A1 218 208 0.14      
6 A2 322 307 0.00      
7 E 3200 3052 1.94      
7 E 3200 3052 1.95      
8 E 1521 1450 6.72      
8 E 1521 1450 6.72      
9 E 1137 1085 66.56      
9 E 1137 1085 66.45      
10 E 626 597 108.03      
10 E 626 597 107.90      
11 E 281 268 1.33      
11 E 281 268 1.33      
12 E 148 141 0.11      
12 E 148 141 0.11      

Unscaled Zero Point Vibrational Energy (zpe) 10234.3 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 9760.4 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 B1B95/6-31G
ABC
0.03488 0.03488 0.02064

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.467
C2 0.000 0.000 1.967
Br3 0.000 1.854 -0.206
Br4 1.605 -0.927 -0.206
Br5 -1.605 -0.927 -0.206
H6 0.000 -1.025 2.339
H7 0.888 0.513 2.339
H8 -0.888 0.513 2.339

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.50091.97171.97171.97172.13502.13502.1350
C21.50092.85642.85642.85641.09071.09071.0907
Br31.97172.85643.21043.21043.84263.01063.0106
Br41.97172.85643.21043.21043.01063.01063.8426
Br51.97172.85643.21043.21043.01063.84263.0106
H62.13501.09073.84263.01063.01061.77611.7761
H72.13501.09073.01063.01063.84261.77611.7761
H82.13501.09073.01063.84263.01061.77611.7761

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 109.926 C1 C2 H7 109.926
C1 C2 H8 109.926 C2 C1 Br3 109.940
C2 C1 Br4 109.940 C2 C1 Br5 109.940
Br3 C1 Br4 108.998 Br3 C1 Br5 108.998
Br4 C1 Br5 108.998 H6 C2 H7 109.013
H6 C2 H8 109.013 H7 C2 H8 109.013
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.777      
2 C -0.371      
3 Br 0.171      
4 Br 0.171      
5 Br 0.171      
6 H 0.212      
7 H 0.212      
8 H 0.212      


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 1.960 1.960
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -67.670 0.000 0.000
y 0.000 -67.670 0.000
z 0.000 0.000 -63.888
Traceless
 xyz
x -1.891 0.000 0.000
y 0.000 -1.891 0.000
z 0.000 0.000 3.782
Polar
3z2-r27.564
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 9.894 0.000 0.000
y 0.000 9.894 0.001
z 0.000 0.001 6.354


<r2> (average value of r2) Å2
<r2> 450.762
(<r2>)1/2 21.231