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

using model chemistry: B97D3/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B97D3/STO-3G
 hartrees
Energy at 0K-2784.386130
Energy at 298.15K 
HF Energy-2784.386130
Nuclear repulsion energy173.426816
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 B97D3/STO-3G
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 3181 3181 5.87 53.93 0.00 0.00
2 A1 1433 1433 0.05 1.63 0.35 0.52
3 A1 806 806 90.19 3.72 0.25 0.40
4 A1 392 392 9.18 9.19 0.28 0.44
5 E 3354 3354 15.67 38.78 0.75 0.86
5 E 3354 3354 15.66 38.78 0.75 0.86
6 E 1710 1710 0.00 15.01 0.75 0.86
6 E 1710 1710 0.00 15.01 0.75 0.86
7 E 725 725 46.07 0.23 0.75 0.86
7 E 725 725 46.07 0.23 0.75 0.86
8 E 116 116 43.64 0.08 0.75 0.86
8 E 116 116 43.64 0.08 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8810.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8810.9 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 B97D3/STO-3G
ABC
5.35365 0.05985 0.05985

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/STO-3G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.039
Mg2 0.000 0.000 -1.056
Br3 0.000 0.000 1.180
H4 0.000 1.021 -3.465
H5 0.884 -0.510 -3.465
H6 -0.884 -0.510 -3.465

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C11.98354.21941.10581.10581.1058
Mg21.98352.23592.61652.61652.6165
Br34.21942.23594.75594.75594.7559
H41.10582.61654.75591.76761.7676
H51.10582.61654.75591.76761.7676
H61.10582.61654.75591.76761.7676

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 112.646
Mg2 C1 H5 112.646 Mg2 C1 H6 112.646
H4 C1 H5 106.118 H4 C1 H6 106.118
H5 C1 H6 106.118
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.464      
2 Mg 0.850      
3 Br -0.459      
4 H 0.024      
5 H 0.024      
6 H 0.024      


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 -2.037 2.037
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.201 0.000 0.000
y 0.000 -29.201 0.000
z 0.000 0.000 -42.499
Traceless
 xyz
x 6.649 0.000 0.000
y 0.000 6.649 0.000
z 0.000 0.000 -13.297
Polar
3z2-r2-26.595
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 1.518 0.000 0.000
y 0.000 1.518 0.000
z 0.000 0.000 5.387


<r2> (average value of r2) Å2
<r2> 177.692
(<r2>)1/2 13.330