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

using model chemistry: mPW1PW91/TZVP

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/TZVP
 hartrees
Energy at 0K-2814.401389
Energy at 298.15K 
HF Energy-2814.401389
Nuclear repulsion energy165.281159
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/TZVP
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 3048 2908 24.65 161.05 0.00 0.01
2 A1 1184 1130 0.20 76.88 0.29 0.45
3 A1 597 570 71.79 16.37 0.20 0.33
4 A1 291 278 17.44 20.87 0.27 0.43
5 E 3133 2989 11.15 123.93 0.75 0.86
5 E 3133 2989 11.15 123.92 0.75 0.86
6 E 1455 1388 2.14 9.87 0.75 0.86
6 E 1455 1388 2.14 9.87 0.75 0.86
7 E 617 589 82.46 0.55 0.75 0.86
7 E 617 589 82.47 0.55 0.75 0.86
8 E 102 97 33.36 0.48 0.75 0.86
8 E 102 97 33.36 0.48 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7867.1 cm-1
Scaled (by 0.954) Zero Point Vibrational Energy (zpe) 7505.2 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/TZVP
ABC
5.39897 0.05410 0.05410

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/TZVP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.199
Mg2 0.000 0.000 -1.124
Br3 0.000 0.000 1.242
H4 0.000 1.016 -3.600
H5 0.880 -0.508 -3.600
H6 -0.880 -0.508 -3.600

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.07584.44171.09241.09241.0924
Mg22.07582.36592.67692.67692.6769
Br34.44172.36594.94794.94794.9479
H41.09242.67694.94791.76021.7602
H51.09242.67694.94791.76021.7602
H61.09242.67694.94791.76021.7602

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 111.520
Mg2 C1 H5 111.520 Mg2 C1 H6 111.520
H4 C1 H5 107.347 H4 C1 H6 107.347
H5 C1 H6 107.347
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.958      
2 Mg 1.105      
3 Br -0.606      
4 H 0.153      
5 H 0.153      
6 H 0.153      


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 -2.661 2.661
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.481 0.000 0.000
y 0.000 -34.481 0.000
z 0.000 0.000 -45.025
Traceless
 xyz
x 5.272 0.000 0.000
y 0.000 5.272 0.000
z 0.000 0.000 -10.544
Polar
3z2-r2-21.088
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 5.226 0.000 0.000
y 0.000 5.226 0.000
z 0.000 0.000 10.863


<r2> (average value of r2) Å2
<r2> 196.298
(<r2>)1/2 14.011