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

using model chemistry: B3LYP/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 B3LYP/3-21G
 hartrees
Energy at 0K-2800.508780
Energy at 298.15K 
HF Energy-2800.508780
Nuclear repulsion energy163.681201
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 B3LYP/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 3028 2922 16.67 102.21 0.00 0.00
2 A1 1255 1211 0.06 50.71 0.03 0.06
3 A1 623 601 41.31 15.18 0.05 0.10
4 A1 295 285 10.02 21.54 0.20 0.34
5 E 3103 2994 11.92 127.87 0.75 0.86
5 E 3103 2994 11.92 127.87 0.75 0.86
6 E 1538 1484 0.24 7.61 0.75 0.86
6 E 1538 1484 0.24 7.61 0.75 0.86
7 E 671 648 105.52 4.14 0.75 0.86
7 E 671 648 105.52 4.14 0.75 0.86
8 E 94 91 21.38 0.01 0.75 0.86
8 E 94 91 21.38 0.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8007.0 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 7726.0 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 B3LYP/3-21G
ABC
5.31476 0.05311 0.05311

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.225
Mg2 0.000 0.000 -1.142
Br3 0.000 0.000 1.255
H4 0.000 1.024 -3.619
H5 0.887 -0.512 -3.619
H6 -0.887 -0.512 -3.619

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.08354.47981.09741.09741.0974
Mg22.08352.39632.68092.68092.6809
Br34.47982.39634.98024.98024.9802
H41.09742.68094.98021.77401.7740
H51.09742.68094.98021.77401.7740
H61.09742.68094.98021.77401.7740

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 111.038
Mg2 C1 H5 111.038 Mg2 C1 H6 111.038
H4 C1 H5 107.860 H4 C1 H6 107.860
H5 C1 H6 107.860
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.955      
2 Mg 0.727      
3 Br -0.391      
4 H 0.207      
5 H 0.207      
6 H 0.207      


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 -2.592 2.592
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.553 0.000 0.000
y 0.000 -34.553 0.000
z 0.000 0.000 -43.056
Traceless
 xyz
x 4.251 0.000 0.000
y 0.000 4.251 0.000
z 0.000 0.000 -8.502
Polar
3z2-r2-17.005
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 10.744


<r2> (average value of r2) Å2
<r2> 198.936
(<r2>)1/2 14.104