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

using model chemistry: B1B95/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B1B95/6-31G**
 hartrees
Energy at 0K-2812.067002
Energy at 298.15K 
HF Energy-2812.067002
Nuclear repulsion energy166.957900
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 B1B95/6-31G**
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 3064 2925 15.79 104.96 0.00 0.00
2 A1 1206 1151 1.76 55.78 0.07 0.13
3 A1 620 592 70.30 11.93 0.09 0.16
4 A1 307 293 14.12 18.97 0.18 0.30
5 E 3151 3009 11.58 122.77 0.75 0.86
5 E 3151 3009 11.58 122.77 0.75 0.86
6 E 1494 1426 0.00 4.54 0.75 0.86
6 E 1494 1426 0.00 4.54 0.75 0.86
7 E 616 588 86.37 2.29 0.75 0.86
7 E 616 588 86.37 2.29 0.75 0.86
8 E 127 121 24.23 0.50 0.75 0.86
8 E 127 121 24.23 0.50 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7985.4 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 7624.5 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 B1B95/6-31G**
ABC
5.38486 0.05516 0.05516

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.174
Mg2 0.000 0.000 -1.104
Br3 0.000 0.000 1.229
H4 0.000 1.018 -3.577
H5 0.881 -0.509 -3.577
H6 -0.881 -0.509 -3.577

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.07054.40321.09431.09431.0943
Mg22.07052.33272.67422.67422.6742
Br34.40322.33274.91234.91234.9123
H41.09432.67424.91231.76251.7625
H51.09432.67424.91231.76251.7625
H61.09432.67424.91231.76251.7625

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 111.585
Mg2 C1 H5 111.585 Mg2 C1 H6 111.585
H4 C1 H5 107.277 H4 C1 H6 107.277
H5 C1 H6 107.277
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.806      
2 Mg 0.568      
3 Br -0.291      
4 H 0.176      
5 H 0.176      
6 H 0.176      


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 -2.102 2.102
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.034 0.000 0.000
y 0.000 -34.034 0.000
z 0.000 0.000 -41.923
Traceless
 xyz
x 3.945 0.000 0.000
y 0.000 3.945 0.000
z 0.000 0.000 -7.889
Polar
3z2-r2-15.779
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 6.103 0.000 0.000
y 0.000 6.103 0.000
z 0.000 0.000 10.358


<r2> (average value of r2) Å2
<r2> 192.321
(<r2>)1/2 13.868