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

using model chemistry: wB97X-D/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at wB97X-D/3-21G*
 hartrees
Energy at 0K-7763.767965
Energy at 298.15K-7763.779796
HF Energy-7763.767965
Nuclear repulsion energy981.442882
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 wB97X-D/3-21G*
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 3104 2942 1.23      
2 A1 1484 1407 21.97      
3 A1 1054 999 4.83      
4 A1 428 405 4.48      
5 A1 220 208 0.12      
6 A2 320 303 0.00      
7 E 3192 3026 1.19      
7 E 3192 3026 1.19      
8 E 1550 1469 6.97      
8 E 1550 1469 6.97      
9 E 1157 1096 52.13      
9 E 1157 1096 51.96      
10 E 697 660 65.10      
10 E 697 660 64.82      
11 E 282 268 0.93      
11 E 282 267 0.93      
12 E 150 143 0.09      
12 E 150 143 0.09      

Unscaled Zero Point Vibrational Energy (zpe) 10332.4 cm-1
Scaled (by 0.9478) Zero Point Vibrational Energy (zpe) 9793.0 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 wB97X-D/3-21G*
ABC
0.03571 0.03571 0.02127

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/3-21G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.458
C2 0.000 0.000 1.982
Br3 0.000 1.826 -0.206
Br4 1.581 -0.913 -0.206
Br5 -1.581 -0.913 -0.206
H6 0.000 -1.030 2.346
H7 0.892 0.515 2.346
H8 -0.892 0.515 2.346

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.52401.94301.94301.94302.15112.15112.1511
C21.52402.84992.84992.84991.09281.09281.0928
Br31.94302.84993.16293.16293.83053.00483.0048
Br41.94302.84993.16293.16293.00483.00483.8305
Br51.94302.84993.16293.16293.00483.83053.0048
H62.15111.09283.83053.00483.00481.78451.7845
H72.15111.09283.00483.00483.83051.78451.7845
H82.15111.09283.00483.83053.00481.78451.7845

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 109.472 C1 C2 H7 109.472
C1 C2 H8 109.472 C2 C1 Br3 109.982
C2 C1 Br4 109.982 C2 C1 Br5 109.982
Br3 C1 Br4 108.955 Br3 C1 Br5 108.955
Br4 C1 Br5 108.955 H6 C2 H7 109.471
H6 C2 H8 109.471 H7 C2 H8 109.471
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.262      
2 C -0.592      
3 Br 0.032      
4 Br 0.032      
5 Br 0.032      
6 H 0.253      
7 H 0.253      
8 H 0.253      


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 1.565 1.565
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -65.753 0.000 0.000
y 0.000 -65.753 0.000
z 0.000 0.000 -63.412
Traceless
 xyz
x -1.170 0.000 0.000
y 0.000 -1.170 0.000
z 0.000 0.000 2.341
Polar
3z2-r24.682
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 10.441 0.000 0.000
y 0.000 10.436 0.000
z 0.000 0.000 7.760


<r2> (average value of r2) Å2
<r2> 439.691
(<r2>)1/2 20.969