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

using model chemistry: B1B95/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B1B95/6-311G**
 hartrees
Energy at 0K-2814.529821
Energy at 298.15K 
HF Energy-2814.529821
Nuclear repulsion energy166.069590
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 B1B95/6-311G**
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 3042 2921 20.95 138.83 0.00 0.00
2 A1 1167 1120 0.29 77.42 0.11 0.19
3 A1 611 587 83.31 13.57 0.10 0.19
4 A1 301 289 16.33 19.93 0.20 0.33
5 E 3127 3002 12.60 130.62 0.75 0.86
5 E 3127 3002 12.60 130.62 0.75 0.86
6 E 1452 1394 0.07 2.25 0.75 0.86
6 E 1452 1394 0.07 2.25 0.75 0.86
7 E 596 573 79.18 3.96 0.75 0.86
7 E 596 573 79.18 3.97 0.75 0.86
8 E 109 105 27.43 0.51 0.75 0.86
8 E 109 105 27.43 0.51 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7845.3 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 7532.3 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 B1B95/6-311G**
ABC
5.39629 0.05459 0.05459

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.188
Mg2 0.000 0.000 -1.115
Br3 0.000 0.000 1.236
H4 0.000 1.016 -3.587
H5 0.880 -0.508 -3.587
H6 -0.880 -0.508 -3.587

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.07304.42371.09221.09221.0922
Mg22.07302.35072.67332.67332.6733
Br34.42372.35074.92924.92924.9292
H41.09222.67334.92921.76061.7606
H51.09222.67334.92921.76061.7606
H61.09222.67334.92921.76061.7606

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 111.456
Mg2 C1 H5 111.456 Mg2 C1 H6 111.456
H4 C1 H5 107.415 H4 C1 H6 107.415
H5 C1 H6 107.415
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.701      
2 Mg 0.671      
3 Br -0.387      
4 H 0.139      
5 H 0.139      
6 H 0.139      


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 -2.271 2.271
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.406 0.000 0.000
y 0.000 -34.406 0.000
z 0.000 0.000 -43.654
Traceless
 xyz
x 4.624 0.000 0.000
y 0.000 4.624 0.000
z 0.000 0.000 -9.248
Polar
3z2-r2-18.495
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 6.167 0.000 0.000
y 0.000 6.167 0.000
z 0.000 0.000 11.155


<r2> (average value of r2) Å2
<r2> 194.468
(<r2>)1/2 13.945