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

using model chemistry: HF/cc-pVQZ

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/cc-pVQZ
 hartrees
Energy at 0K-2811.792358
Energy at 298.15K 
HF Energy-2811.792358
Nuclear repulsion energy165.640214
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/cc-pVQZ
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 3124 2838 39.26 147.01 0.01 0.01
2 A1 1264 1149 0.00 82.38 0.21 0.34
3 A1 616 560 86.86 15.65 0.16 0.28
4 A1 304 276 17.04 16.60 0.16 0.27
5 E 3191 2898 25.90 122.38 0.75 0.86
5 E 3191 2898 25.90 122.38 0.75 0.86
6 E 1562 1419 0.05 0.47 0.75 0.86
6 E 1562 1419 0.05 0.47 0.75 0.86
7 E 606 550 81.07 7.08 0.75 0.86
7 E 606 550 81.07 7.08 0.75 0.86
8 E 106 96 34.92 0.88 0.75 0.86
8 E 106 96 34.92 0.88 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8118.1 cm-1
Scaled (by 0.9084) Zero Point Vibrational Energy (zpe) 7374.5 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 HF/cc-pVQZ
ABC
5.45672 0.05422 0.05422

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.201
Mg2 0.000 0.000 -1.117
Br3 0.000 0.000 1.240
H4 0.000 1.011 -3.598
H5 0.875 -0.505 -3.598
H6 -0.875 -0.505 -3.598

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.08474.44131.08591.08591.0859
Mg22.08472.35662.67942.67942.6794
Br34.44132.35664.94254.94254.9425
H41.08592.67944.94251.75081.7508
H51.08592.67944.94251.75081.7508
H61.08592.67944.94251.75081.7508

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 111.431
Mg2 C1 H5 111.431 Mg2 C1 H6 111.431
H4 C1 H5 107.443 H4 C1 H6 107.443
H5 C1 H6 107.443
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.430      
2 Mg 0.778      
3 Br -0.498      
4 H 0.050      
5 H 0.050      
6 H 0.050      


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 -2.166 2.166
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.525 0.000 0.000
y 0.000 -34.525 0.000
z 0.000 0.000 -46.157
Traceless
 xyz
x 5.816 0.000 0.000
y 0.000 5.816 0.000
z 0.000 0.000 -11.632
Polar
3z2-r2-23.263
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 6.951 0.000 0.000
y 0.000 6.951 0.000
z 0.000 0.000 10.509


<r2> (average value of r2) Å2
<r2> 196.154
(<r2>)1/2 14.006