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

using model chemistry: HF/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at HF/6-31+G**
 hartrees
Energy at 0K-2809.201186
Energy at 298.15K 
HF Energy-2809.201186
Nuclear repulsion energy165.739372
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 HF/6-31+G**
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 3147 2845 48.49 124.36 0.01 0.02
2 A1 1285 1162 0.17 98.83 0.17 0.28
3 A1 621 562 86.26 15.42 0.19 0.32
4 A1 306 276 18.08 16.23 0.18 0.30
5 E 3221 2913 25.62 140.97 0.75 0.86
5 E 3221 2913 25.62 140.97 0.75 0.86
6 E 1572 1422 0.08 2.17 0.75 0.86
6 E 1572 1422 0.08 2.17 0.75 0.86
7 E 633 573 85.80 5.48 0.75 0.86
7 E 633 573 85.80 5.48 0.75 0.86
8 E 162 146 34.88 0.68 0.75 0.86
8 E 162 146 34.88 0.68 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8267.4 cm-1
Scaled (by 0.9042) Zero Point Vibrational Energy (zpe) 7475.4 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 HF/6-31+G**
ABC
5.43286 0.05427 0.05427

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.202
Mg2 0.000 0.000 -1.113
Br3 0.000 0.000 1.239
H4 0.000 1.013 -3.600
H5 0.877 -0.507 -3.600
H6 -0.877 -0.507 -3.600

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.08874.44101.08851.08851.0885
Mg22.08872.35222.68522.68522.6852
Br34.44102.35224.94404.94404.9440
H41.08852.68524.94401.75471.7547
H51.08852.68524.94401.75471.7547
H61.08852.68524.94401.75471.7547

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 111.452
Mg2 C1 H5 111.452 Mg2 C1 H6 111.452
H4 C1 H5 107.420 H4 C1 H6 107.420
H5 C1 H6 107.420
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.735      
2 Mg 0.829      
3 Br -0.489      
4 H 0.132      
5 H 0.132      
6 H 0.132      


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 -2.186 2.186
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.693 0.000 0.000
y 0.000 -34.693 0.000
z 0.000 0.000 -46.603
Traceless
 xyz
x 5.955 0.000 0.000
y 0.000 5.955 0.000
z 0.000 0.000 -11.910
Polar
3z2-r2-23.820
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 6.009 0.000 0.000
y 0.000 6.009 0.000
z 0.000 0.000 10.155


<r2> (average value of r2) Å2
<r2> 196.225
(<r2>)1/2 14.008