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

using model chemistry: B1B95/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-2814.525765
Energy at 298.15K 
HF Energy-2814.525765
Nuclear repulsion energy165.804332
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/cc-pVDZ
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 3047 2929 17.68 133.55 0.00 0.00
2 A1 1137 1093 1.61 57.86 0.10 0.18
3 A1 613 589 76.25 13.40 0.09 0.17
4 A1 301 289 15.14 19.19 0.19 0.32
5 E 3143 3021 8.14 132.27 0.75 0.86
5 E 3143 3021 8.14 132.27 0.75 0.86
6 E 1423 1368 0.00 3.65 0.75 0.86
6 E 1423 1368 0.00 3.65 0.75 0.86
7 E 581 558 81.65 3.85 0.75 0.86
7 E 581 558 81.65 3.85 0.75 0.86
8 E 104 100 24.89 0.63 0.75 0.86
8 E 104 100 24.89 0.63 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7799.2 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 7496.6 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/cc-pVDZ
ABC
5.31177 0.05450 0.05450

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/cc-pVDZ

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 -1.118
Br3 0.000 0.000 1.237
H4 0.000 1.025 -3.590
H5 0.887 -0.512 -3.590
H6 -0.887 -0.512 -3.590

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.07044.42561.10061.10061.1006
Mg22.07042.35532.67632.67632.6763
Br34.42562.35534.93524.93524.9352
H41.10062.67634.93521.77451.7745
H51.10062.67634.93521.77451.7745
H61.10062.67634.93521.77451.7745

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 111.426
Mg2 C1 H5 111.426 Mg2 C1 H6 111.426
H4 C1 H5 107.448 H4 C1 H6 107.448
H5 C1 H6 107.448
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.344      
2 Mg 0.533      
3 Br -0.328      
4 H 0.046      
5 H 0.046      
6 H 0.046      


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 -2.170 2.170
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.214 0.000 0.000
y 0.000 -34.214 0.000
z 0.000 0.000 -42.659
Traceless
 xyz
x 4.222 0.000 0.000
y 0.000 4.222 0.000
z 0.000 0.000 -8.444
Polar
3z2-r2-16.889
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 6.040 0.000 0.000
y 0.000 6.040 0.000
z 0.000 0.000 10.702


<r2> (average value of r2) Å2
<r2> 194.521
(<r2>)1/2 13.947