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

using model chemistry: PBE1PBE/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at PBE1PBE/6-311+G(3df,2p)
 hartrees
Energy at 0K-2813.742895
Energy at 298.15K 
HF Energy-2813.742895
Nuclear repulsion energy166.447787
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 PBE1PBE/6-311+G(3df,2p)
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 3033 3033 19.90 173.29 0.00 0.00
2 A1 1148 1148 0.03 99.17 0.19 0.32
3 A1 609 609 81.95 12.82 0.16 0.28
4 A1 301 301 14.82 23.83 0.14 0.25
5 E 3117 3117 10.57 108.50 0.75 0.86
5 E 3117 3117 10.57 108.51 0.75 0.86
6 E 1443 1443 0.00 0.19 0.75 0.86
6 E 1443 1443 0.00 0.19 0.75 0.86
7 E 579 579 70.32 7.63 0.75 0.86
7 E 579 579 70.32 7.63 0.75 0.86
8 E 101 101 26.66 1.37 0.75 0.86
8 E 101 101 26.66 1.38 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7785.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7785.1 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 PBE1PBE/6-311+G(3df,2p)
ABC
5.38091 0.05486 0.05486

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-311+G(3df,2p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.180
Mg2 0.000 0.000 -1.112
Br3 0.000 0.000 1.233
H4 0.000 1.018 -3.578
H5 0.882 -0.509 -3.578
H6 -0.882 -0.509 -3.578

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.06824.41291.09311.09311.0931
Mg22.06822.34472.66832.66832.6683
Br34.41292.34474.91774.91774.9177
H41.09312.66834.91771.76311.7631
H51.09312.66834.91771.76311.7631
H61.09312.66834.91771.76311.7631

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 111.370
Mg2 C1 H5 111.370 Mg2 C1 H6 111.370
H4 C1 H5 107.508 H4 C1 H6 107.508
H5 C1 H6 107.508
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.821      
2 Mg 0.785      
3 Br -0.352      
4 H 0.129      
5 H 0.129      
6 H 0.129      


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 -2.161 2.161
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.554 0.000 0.000
y 0.000 -34.554 0.000
z 0.000 0.000 -43.771
Traceless
 xyz
x 4.609 0.000 0.000
y 0.000 4.609 0.000
z 0.000 0.000 -9.217
Polar
3z2-r2-18.435
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 7.668 0.000 0.000
y 0.000 7.668 0.000
z 0.000 0.000 12.129


<r2> (average value of r2) Å2
<r2> 193.731
(<r2>)1/2 13.919