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All results from a given calculation for CH3MgBr (Methyl Magnesium Bromide)

using model chemistry: B3PW91/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B3PW91/6-31G
 hartrees
Energy at 0K-2811.559091
Energy at 298.15K 
HF Energy-2811.559091
Nuclear repulsion energy164.362208
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 B3PW91/6-31G
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 3041 2912 22.50      
2 A1 1237 1185 0.65      
3 A1 621 595 41.38      
4 A1 298 285 12.69      
5 E 3141 3008 12.58      
5 E 3141 3008 12.58      
6 E 1506 1443 1.15      
6 E 1506 1443 1.15      
7 E 665 637 104.97      
7 E 665 637 104.97      
8 E 132 126 26.39      
8 E 132 126 26.39      

Unscaled Zero Point Vibrational Energy (zpe) 8042.0 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 7701.9 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 B3PW91/6-31G
ABC
5.30525 0.05365 0.05365

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.205
Mg2 0.000 0.000 -1.141
Br3 0.000 0.000 1.249
H4 0.000 1.025 -3.597
H5 0.888 -0.513 -3.597
H6 -0.888 -0.513 -3.597

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.06354.45341.09781.09781.0978
Mg22.06352.38992.66152.66152.6615
Br34.45342.38994.95324.95324.9532
H41.09782.66154.95321.77561.7756
H51.09782.66154.95321.77561.7756
H61.09782.66154.95321.77561.7756

picture of Methyl Magnesium Bromide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 Mg2 Br3 180.000 Mg2 C1 H4 110.954
Mg2 C1 H5 110.954 Mg2 C1 H6 110.954
H4 C1 H5 107.948 H4 C1 H6 107.948
H5 C1 H6 107.948
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.903      
2 Mg 0.780      
3 Br -0.428      
4 H 0.184      
5 H 0.184      
6 H 0.184      


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 -3.072 3.072
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.425 0.000 0.000
y 0.000 -34.425 0.000
z 0.000 0.000 -43.517
Traceless
 xyz
x 4.546 0.000 0.000
y 0.000 4.546 0.000
z 0.000 0.000 -9.091
Polar
3z2-r2-18.182
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 5.031 0.000 0.000
y 0.000 5.031 0.000
z 0.000 0.000 10.547


<r2> (average value of r2) Å2
<r2> 197.190
(<r2>)1/2 14.042