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

using model chemistry: PBEPBE/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at PBEPBE/cc-pVDZ
 hartrees
Energy at 0K-2813.611110
Energy at 298.15K 
HF Energy-2813.611110
Nuclear repulsion energy164.642234
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 PBEPBE/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 2962 2945 14.81 147.17 0.00 0.00
2 A1 1090 1083 5.20 59.54 0.08 0.14
3 A1 589 586 66.02 12.46 0.07 0.14
4 A1 291 290 13.51 24.01 0.19 0.32
5 E 3058 3040 6.79 132.48 0.75 0.86
5 E 3058 3040 6.79 132.48 0.75 0.86
6 E 1375 1367 0.01 3.33 0.75 0.86
6 E 1375 1367 0.01 3.33 0.75 0.86
7 E 572 568 77.26 4.01 0.75 0.86
7 E 572 568 77.26 4.01 0.75 0.86
8 E 99 99 19.78 0.74 0.75 0.86
8 E 99 99 19.78 0.74 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7569.7 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 7525.8 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 PBEPBE/cc-pVDZ
ABC
5.20203 0.05375 0.05375

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/cc-pVDZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.211
Mg2 0.000 0.000 -1.125
Br3 0.000 0.000 1.246
H4 0.000 1.035 -3.613
H5 0.897 -0.518 -3.613
H6 -0.897 -0.518 -3.613

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.08564.45701.11061.11061.1106
Mg22.08562.37142.69432.69432.6943
Br34.45702.37144.96804.96804.9680
H41.11062.69434.96801.79321.7932
H51.11062.69434.96801.79321.7932
H61.11062.69434.96801.79321.7932

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 111.217
Mg2 C1 H5 111.217 Mg2 C1 H6 111.217
H4 C1 H5 107.671 H4 C1 H6 107.671
H5 C1 H6 107.671
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.333      
2 Mg 0.466      
3 Br -0.293      
4 H 0.053      
5 H 0.053      
6 H 0.053      


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 -2.181 2.181
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.606 0.000 0.000
y 0.000 -34.606 0.000
z 0.000 0.000 -41.724
Traceless
 xyz
x 3.559 0.000 0.000
y 0.000 3.559 0.000
z 0.000 0.000 -7.118
Polar
3z2-r2-14.236
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 6.423 0.000 0.000
y 0.000 6.423 0.000
z 0.000 0.000 11.686


<r2> (average value of r2) Å2
<r2> 196.869
(<r2>)1/2 14.031