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

using model chemistry: BLYP/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 BLYP/6-31G
 hartrees
Energy at 0K-7792.686182
Energy at 298.15K-7792.697654
HF Energy-7792.686182
Nuclear repulsion energy944.756905
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 BLYP/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 2998 2975 3.13      
2 A1 1432 1421 9.91      
3 A1 1043 1035 20.86      
4 A1 381 378 10.09      
5 A1 199 197 0.03      
6 A2 303 301 0.00      
7 E 3083 3060 4.64      
7 E 3083 3060 4.65      
8 E 1483 1472 4.01      
8 E 1483 1472 4.01      
9 E 1098 1089 66.11      
9 E 1098 1089 66.11      
10 E 555 551 135.77      
10 E 555 551 135.81      
11 E 268 266 3.25      
11 E 268 266 3.25      
12 E 135 134 0.01      
12 E 135 134 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 9799.8 cm-1
Scaled (by 0.9924) Zero Point Vibrational Energy (zpe) 9725.3 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 BLYP/6-31G
ABC
0.03310 0.03310 0.01955

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.486
C2 0.000 0.000 2.005
Br3 0.000 1.905 -0.210
Br4 1.650 -0.952 -0.210
Br5 -1.650 -0.952 -0.210
H6 0.000 -1.035 2.381
H7 0.896 0.517 2.381
H8 -0.896 0.517 2.381

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 H6 H7 H8
C11.51882.02832.02832.02832.15842.15842.1584
C21.51882.92182.92182.92181.10081.10081.1008
Br32.02832.92183.29923.29923.91853.07273.0727
Br42.02832.92183.29923.29923.07273.07273.9185
Br52.02832.92183.29923.29923.07273.91853.0727
H62.15841.10083.91853.07273.07271.79231.7923
H72.15841.10083.07273.07273.91851.79231.7923
H82.15841.10083.07273.91853.07271.79231.7923

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 109.942 C1 C2 H7 109.942
C1 C2 H8 109.942 C2 C1 Br3 110.092
C2 C1 Br4 110.092 C2 C1 Br5 110.092
Br3 C1 Br4 108.844 Br3 C1 Br5 108.844
Br4 C1 Br5 108.844 H6 C2 H7 108.996
H6 C2 H8 108.996 H7 C2 H8 108.996
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.597      
2 C -0.291      
3 Br 0.121      
4 Br 0.121      
5 Br 0.121      
6 H 0.175      
7 H 0.175      
8 H 0.175      


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 1.971 1.971
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -67.852 0.000 0.000
y 0.000 -67.852 0.000
z 0.000 0.000 -63.990
Traceless
 xyz
x -1.931 0.000 0.000
y 0.000 -1.931 0.000
z 0.000 0.000 3.862
Polar
3z2-r27.724
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 10.703 0.000 0.000
y 0.000 10.702 0.000
z 0.000 0.000 6.770


<r2> (average value of r2) Å2
<r2> 472.956
(<r2>)1/2 21.748