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

using model chemistry: mPW1PW91/daug-cc-pVTZ

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/daug-cc-pVTZ
 hartrees
Energy at 0K-2814.468379
Energy at 298.15K 
HF Energy-2814.468379
Nuclear repulsion energy166.283082
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/daug-cc-pVTZ
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 3037 3037 20.57 166.72 0.00 0.00
2 A1 1153 1153 0.10 104.96 0.18 0.30
3 A1 608 608 81.93 12.31 0.23 0.37
4 A1 300 300 15.01 24.51 0.14 0.24
5 E 3118 3118 11.03 102.37 0.75 0.86
5 E 3118 3118 11.03 102.06 0.75 0.86
6 E 1448 1448 0.00 0.18 0.75 0.86
6 E 1448 1448 0.00 0.17 0.75 0.86
7 E 581 581 70.64 7.21 0.75 0.86
7 E 581 581 70.64 7.53 0.75 0.86
8 E 102 102 26.95 1.48 0.75 0.86
8 E 102 102 26.96 1.51 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7797.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7797.6 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/daug-cc-pVTZ
ABC
5.39578 0.05475 0.05475

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/daug-cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.183
Mg2 0.000 0.000 -1.114
Br3 0.000 0.000 1.234
H4 0.000 1.017 -3.581
H5 0.880 -0.508 -3.581
H6 -0.880 -0.508 -3.581

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.06894.41701.09181.09181.0918
Mg22.06892.34812.66862.66862.6686
Br34.41702.34814.92164.92164.9216
H41.09182.66864.92161.76071.7607
H51.09182.66864.92161.76071.7607
H61.09182.66864.92161.76071.7607

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 111.406
Mg2 C1 H5 111.406 Mg2 C1 H6 111.406
H4 C1 H5 107.469 H4 C1 H6 107.469
H5 C1 H6 107.469
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.884      
2 Mg 0.208      
3 Br -0.770      
4 H 0.482      
5 H 0.482      
6 H 0.482      


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 -2.142 2.142
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.470 0.000 0.000
y 0.000 -34.470 0.000
z 0.000 0.000 -43.907
Traceless
 xyz
x 4.719 0.000 0.000
y 0.000 4.719 0.000
z 0.000 0.000 -9.438
Polar
3z2-r2-18.875
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 7.879 0.000 0.000
y 0.000 7.879 0.000
z 0.000 0.000 12.084


<r2> (average value of r2) Å2
<r2> 194.053
(<r2>)1/2 13.930