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

using model chemistry: mPW1PW91/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at mPW1PW91/6-31G
 hartrees
Energy at 0K-2811.765465
Energy at 298.15K 
HF Energy-2811.765465
Nuclear repulsion energy164.575879
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 mPW1PW91/6-31G
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 3058 2895 21.84 117.22 0.00 0.00
2 A1 1246 1179 1.08 54.91 0.06 0.11
3 A1 625 592 41.35 17.67 0.07 0.13
4 A1 300 284 12.74 19.42 0.20 0.34
5 E 3159 2991 11.76 137.28 0.75 0.86
5 E 3159 2991 11.76 137.26 0.75 0.86
6 E 1514 1433 1.31 7.61 0.75 0.86
6 E 1514 1433 1.32 7.61 0.75 0.86
7 E 668 632 107.55 3.45 0.75 0.86
7 E 668 632 107.54 3.44 0.75 0.86
8 E 132 125 27.29 0.04 0.75 0.86
8 E 132 125 27.29 0.04 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8087.4 cm-1
Scaled (by 0.9466) Zero Point Vibrational Energy (zpe) 7655.5 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 mPW1PW91/6-31G
ABC
5.32177 0.05379 0.05379

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.200
Mg2 0.000 0.000 -1.140
Br3 0.000 0.000 1.247
H4 0.000 1.024 -3.592
H5 0.886 -0.512 -3.592
H6 -0.886 -0.512 -3.592

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.06054.44741.09611.09611.0961
Mg22.06052.38692.65772.65772.6577
Br34.44742.38694.94674.94674.9467
H41.09612.65774.94671.77291.7729
H51.09612.65774.94671.77291.7729
H61.09612.65774.94671.77291.7729

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 110.966
Mg2 C1 H5 110.966 Mg2 C1 H6 110.966
H4 C1 H5 107.936 H4 C1 H6 107.936
H5 C1 H6 107.936
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.923      
2 Mg 0.790      
3 Br -0.432      
4 H 0.188      
5 H 0.188      
6 H 0.188      


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 -3.081 3.081
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.424 0.000 0.000
y 0.000 -34.424 0.000
z 0.000 0.000 -43.681
Traceless
 xyz
x 4.628 0.000 0.000
y 0.000 4.628 0.000
z 0.000 0.000 -9.257
Polar
3z2-r2-18.513
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 4.976 0.000 0.000
y 0.000 4.976 0.000
z 0.000 0.000 10.391


<r2> (average value of r2) Å2
<r2> 196.769
(<r2>)1/2 14.027