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

using model chemistry: HF/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at HF/Def2TZVPP
 hartrees
Energy at 0K-2811.732733
Energy at 298.15K 
HF Energy-2811.732733
Nuclear repulsion energy165.603411
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 HF/Def2TZVPP
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 3128 2835 38.85 133.18 0.01 0.01
2 A1 1265 1147 0.01 80.56 0.18 0.31
3 A1 617 559 86.38 15.88 0.13 0.24
4 A1 304 275 16.84 16.22 0.16 0.28
5 E 3195 2896 25.31 126.09 0.75 0.86
5 E 3195 2896 25.31 126.09 0.75 0.86
6 E 1561 1415 0.05 1.30 0.75 0.86
6 E 1561 1415 0.05 1.30 0.75 0.86
7 E 607 550 82.48 5.33 0.75 0.86
7 E 607 550 82.48 5.33 0.75 0.86
8 E 106 96 34.45 0.80 0.75 0.86
8 E 106 96 34.45 0.80 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8124.7 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 7364.2 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 HF/Def2TZVPP
ABC
5.45397 0.05420 0.05420

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.202
Mg2 0.000 0.000 -1.117
Br3 0.000 0.000 1.240
H4 0.000 1.011 -3.599
H5 0.876 -0.506 -3.599
H6 -0.876 -0.506 -3.599

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.08464.44191.08621.08621.0862
Mg22.08462.35732.67972.67972.6797
Br34.44192.35734.94344.94344.9434
H41.08622.67974.94341.75131.7513
H51.08622.67974.94341.75131.7513
H61.08622.67974.94341.75131.7513

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 111.439
Mg2 C1 H5 111.439 Mg2 C1 H6 111.439
H4 C1 H5 107.434 H4 C1 H6 107.434
H5 C1 H6 107.434
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.658      
2 Mg 0.912      
3 Br -0.522      
4 H 0.089      
5 H 0.089      
6 H 0.089      


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 -2.138 2.138
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.597 0.000 0.000
y 0.000 -34.597 0.000
z 0.000 0.000 -46.114
Traceless
 xyz
x 5.759 0.000 0.000
y 0.000 5.759 0.000
z 0.000 0.000 -11.517
Polar
3z2-r2-23.035
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 6.759 0.000 0.000
y 0.000 6.759 0.000
z 0.000 0.000 10.222


<r2> (average value of r2) Å2
<r2> 196.239
(<r2>)1/2 14.009