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

using model chemistry: B2PLYP/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B2PLYP/3-21G*
 hartrees
Energy at 0K-2800.129688
Energy at 298.15K 
HF Energy-2800.046624
Nuclear repulsion energy167.984063
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 B2PLYP/3-21G*
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 3045 3045 12.29 91.37 0.00 0.00
2 A1 1264 1264 0.42 48.08 0.06 0.11
3 A1 632 632 58.43 9.72 0.04 0.09
4 A1 321 321 10.42 18.51 0.17 0.30
5 E 3121 3121 12.30 112.29 0.75 0.86
5 E 3121 3121 12.30 112.30 0.75 0.86
6 E 1554 1554 0.04 5.90 0.75 0.86
6 E 1554 1554 0.04 5.90 0.75 0.86
7 E 661 661 100.38 2.76 0.75 0.86
7 E 661 661 100.38 2.76 0.75 0.86
8 E 123 123 21.07 0.31 0.75 0.86
8 E 123 123 21.07 0.31 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8090.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8090.8 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 B2PLYP/3-21G*
ABC
5.30410 0.05575 0.05575

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/3-21G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.168
Mg2 0.000 0.000 -1.087
Br3 0.000 0.000 1.221
H4 0.000 1.025 -3.557
H5 0.888 -0.513 -3.557
H6 -0.888 -0.513 -3.557

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.08094.38931.09651.09651.0965
Mg22.08092.30842.67392.67392.6739
Br34.38932.30844.88674.88674.8867
H41.09652.67394.88671.77581.7758
H51.09652.67394.88671.77581.7758
H61.09652.67394.88671.77581.7758

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 110.759
Mg2 C1 H5 110.759 Mg2 C1 H6 110.759
H4 C1 H5 108.154 H4 C1 H6 108.154
H5 C1 H6 108.154
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.921      
2 Mg 0.663      
3 Br -0.325      
4 H 0.195      
5 H 0.195      
6 H 0.195      


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 -1.829 1.829
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.286 0.000 0.000
y 0.000 -34.286 0.000
z 0.000 0.000 -41.750
Traceless
 xyz
x 3.732 0.000 0.000
y 0.000 3.732 0.000
z 0.000 0.000 -7.464
Polar
3z2-r2-14.928
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 5.809 0.000 0.000
y 0.000 5.809 0.000
z 0.000 0.000 9.871


<r2> (average value of r2) Å2
<r2> 190.655
(<r2>)1/2 13.808