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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-2814.525234
Energy at 298.15K 
HF Energy-2814.525234
Nuclear repulsion energy166.049053
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 3041 2915 25.46 126.50 0.00 0.00
2 A1 1197 1147 0.11 82.43 0.10 0.18
3 A1 613 588 82.20 13.42 0.11 0.19
4 A1 301 289 16.53 19.73 0.20 0.33
5 E 3121 2992 15.60 133.13 0.75 0.86
5 E 3121 2992 15.60 133.13 0.75 0.86
6 E 1478 1417 0.31 2.39 0.75 0.86
6 E 1478 1417 0.31 2.39 0.75 0.86
7 E 603 578 81.29 3.68 0.75 0.86
7 E 603 578 81.29 3.68 0.75 0.86
8 E 109 104 27.67 0.49 0.75 0.86
8 E 109 104 27.67 0.49 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7886.2 cm-1
Scaled (by 0.9586) Zero Point Vibrational Energy (zpe) 7559.7 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
5.42496 0.05458 0.05458

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 -3.186
Mg2 0.000 0.000 -1.115
Br3 0.000 0.000 1.236
H4 0.000 1.014 -3.594
H5 0.878 -0.507 -3.594
H6 -0.878 -0.507 -3.594

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.07194.42281.09251.09251.0925
Mg22.07192.35092.67852.67852.6785
Br34.42282.35094.93534.93534.9353
H41.09252.67854.93531.75591.7559
H51.09252.67854.93531.75591.7559
H61.09252.67854.93531.75591.7559

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 111.887
Mg2 C1 H5 111.887 Mg2 C1 H6 111.887
H4 C1 H5 106.951 H4 C1 H6 106.951
H5 C1 H6 106.951
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 -1.066      
2 Mg 0.743      
3 Br -0.386      
4 H 0.236      
5 H 0.236      
6 H 0.236      


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 -2.257 2.257
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.412 0.000 0.000
y 0.000 -34.412 0.000
z 0.000 0.000 -43.769
Traceless
 xyz
x 4.678 0.000 0.000
y 0.000 4.678 0.000
z 0.000 0.000 -9.357
Polar
3z2-r2-18.714
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 6.122 0.000 0.000
y 0.000 6.122 0.000
z 0.000 0.000 11.101


<r2> (average value of r2) Å2
<r2> 194.596
(<r2>)1/2 13.950