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

using model chemistry: mPW1PW91/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at mPW1PW91/6-311G**
 hartrees
Energy at 0K-2814.373414
Energy at 298.15K 
HF Energy-2814.373414
Nuclear repulsion energy165.884331
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 mPW1PW91/6-311G**
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 3039 2907 20.67 135.67 0.00 0.00
2 A1 1171 1120 0.06 77.49 0.10 0.19
3 A1 609 582 82.26 12.95 0.10 0.18
4 A1 300 287 15.91 19.24 0.20 0.33
5 E 3122 2987 12.09 128.05 0.75 0.86
5 E 3122 2987 12.09 128.03 0.75 0.86
6 E 1453 1390 0.12 2.08 0.75 0.86
6 E 1453 1390 0.12 2.08 0.75 0.86
7 E 597 571 82.69 4.26 0.75 0.86
7 E 597 571 82.69 4.26 0.75 0.86
8 E 109 104 27.88 0.47 0.75 0.86
8 E 109 104 27.88 0.47 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7840.4 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 7500.9 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 mPW1PW91/6-311G**
ABC
5.38238 0.05447 0.05447

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.191
Mg2 0.000 0.000 -1.116
Br3 0.000 0.000 1.237
H4 0.000 1.018 -3.592
H5 0.881 -0.509 -3.592
H6 -0.881 -0.509 -3.592

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.07534.42851.09391.09391.0939
Mg22.07532.35322.67712.67712.6771
Br34.42852.35324.93544.93544.9354
H41.09392.67714.93541.76291.7629
H51.09392.67714.93541.76291.7629
H61.09392.67714.93541.76291.7629

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 111.494
Mg2 C1 H5 111.494 Mg2 C1 H6 111.494
H4 C1 H5 107.375 H4 C1 H6 107.375
H5 C1 H6 107.375
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.712      
2 Mg 0.676      
3 Br -0.390      
4 H 0.142      
5 H 0.142      
6 H 0.142      


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 -2.287 2.287
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.395 0.000 0.000
y 0.000 -34.395 0.000
z 0.000 0.000 -43.735
Traceless
 xyz
x 4.670 0.000 0.000
y 0.000 4.670 0.000
z 0.000 0.000 -9.339
Polar
3z2-r2-18.679
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 6.154 0.000 0.000
y 0.000 6.154 0.000
z 0.000 0.000 11.052


<r2> (average value of r2) Å2
<r2> 194.867
(<r2>)1/2 13.959