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

using model chemistry: HF/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 HF/TZVP
 hartrees
Energy at 0K-2811.717308
Energy at 298.15K 
HF Energy-2811.717308
Nuclear repulsion energy164.736370
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/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 3139 2852 47.85 150.17 0.02 0.04
2 A1 1286 1169 0.24 73.50 0.33 0.50
3 A1 608 552 75.31 18.95 0.21 0.35
4 A1 298 270 19.59 16.22 0.29 0.45
5 E 3207 2914 26.93 144.14 0.75 0.86
5 E 3207 2914 26.93 144.14 0.75 0.86
6 E 1563 1420 1.23 11.33 0.75 0.86
6 E 1563 1420 1.23 11.33 0.75 0.86
7 E 638 579 86.76 0.84 0.75 0.86
7 E 638 579 86.76 0.84 0.75 0.86
8 E 109 99 43.13 0.39 0.75 0.86
8 E 109 99 43.13 0.39 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8181.1 cm-1
Scaled (by 0.9086) Zero Point Vibrational Energy (zpe) 7433.4 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/TZVP
ABC
5.46101 0.05365 0.05365

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.215
Mg2 0.000 0.000 -1.126
Br3 0.000 0.000 1.247
H4 0.000 1.010 -3.615
H5 0.875 -0.505 -3.615
H6 -0.875 -0.505 -3.615

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.08904.46241.08681.08681.0868
Mg22.08902.37342.68652.68652.6865
Br34.46242.37344.96654.96654.9665
H41.08682.68654.96651.75011.7501
H51.08682.68654.96651.75011.7501
H61.08682.68654.96651.75011.7501

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 111.610
Mg2 C1 H5 111.610 Mg2 C1 H6 111.610
H4 C1 H5 107.250 H4 C1 H6 107.250
H5 C1 H6 107.250
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.881      
2 Mg 1.205      
3 Br -0.659      
4 H 0.112      
5 H 0.112      
6 H 0.112      


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 -2.664 2.664
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.593 0.000 0.000
y 0.000 -34.593 0.000
z 0.000 0.000 -47.694
Traceless
 xyz
x 6.551 0.000 0.000
y 0.000 6.551 0.000
z 0.000 0.000 -13.102
Polar
3z2-r2-26.203
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 4.887 0.000 0.000
y 0.000 4.887 0.000
z 0.000 0.000 9.535


<r2> (average value of r2) Å2
<r2> 198.298
(<r2>)1/2 14.082