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

using model chemistry: PBEPBE/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at PBEPBE/6-311G**
 hartrees
Energy at 0K-2813.622434
Energy at 298.15K 
HF Energy-2813.622434
Nuclear repulsion energy164.883947
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 PBEPBE/6-311G**
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 2963 2936 17.89 154.13 0.00 0.00
2 A1 1122 1112 1.88 81.30 0.09 0.17
3 A1 591 585 73.80 12.89 0.09 0.16
4 A1 291 288 15.10 24.75 0.19 0.33
5 E 3046 3018 10.64 131.48 0.75 0.86
5 E 3046 3018 10.64 131.48 0.75 0.86
6 E 1405 1392 0.05 1.98 0.75 0.86
6 E 1405 1392 0.05 1.98 0.75 0.86
7 E 589 583 74.94 4.01 0.75 0.86
7 E 589 583 74.94 4.01 0.75 0.86
8 E 105 104 22.58 0.59 0.75 0.86
8 E 105 104 22.58 0.59 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7628.2 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 7558.8 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 PBEPBE/6-311G**
ABC
5.29241 0.05383 0.05383

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-311G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.210
Mg2 0.000 0.000 -1.123
Br3 0.000 0.000 1.245
H4 0.000 1.026 -3.611
H5 0.889 -0.513 -3.611
H6 -0.889 -0.513 -3.611

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.08754.45501.10171.10171.1017
Mg22.08752.36762.69122.69122.6912
Br34.45502.36764.96274.96274.9627
H41.10172.69124.96271.77781.7778
H51.10172.69124.96271.77781.7778
H61.10172.69124.96271.77781.7778

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 111.307
Mg2 C1 H5 111.307 Mg2 C1 H6 111.307
H4 C1 H5 107.574 H4 C1 H6 107.574
H5 C1 H6 107.574
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.687      
2 Mg 0.623      
3 Br -0.364      
4 H 0.143      
5 H 0.143      
6 H 0.143      


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 -2.323 2.323
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.819 0.000 0.000
y 0.000 -34.819 0.000
z 0.000 0.000 -42.857
Traceless
 xyz
x 4.019 0.000 0.000
y 0.000 4.019 0.000
z 0.000 0.000 -8.038
Polar
3z2-r2-16.077
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 6.531 0.000 0.000
y 0.000 6.531 0.000
z 0.000 0.000 12.168


<r2> (average value of r2) Å2
<r2> 196.885
(<r2>)1/2 14.032