return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B97D3/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 B97D3/cc-pVQZ
 hartrees
Energy at 0K-2815.571524
Energy at 298.15K 
HF Energy-2815.571524
Nuclear repulsion energy164.555778
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 B97D3/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 2960 2960 27.59 181.25 0.00 0.00
2 A1 1130 1130 3.56 111.54 0.18 0.30
3 A1 585 585 75.85 16.08 0.13 0.23
4 A1 282 282 16.00 27.64 0.15 0.27
5 E 3038 3038 15.12 123.19 0.75 0.86
5 E 3038 3038 15.12 123.22 0.75 0.86
6 E 1424 1424 0.12 0.29 0.75 0.86
6 E 1424 1424 0.12 0.29 0.75 0.86
7 E 574 574 67.45 7.07 0.75 0.86
7 E 574 574 67.43 7.14 0.75 0.86
8 E 95 95 24.43 1.51 0.75 0.86
8 E 95 95 24.44 1.50 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7609.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7609.4 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 B97D3/cc-pVQZ
ABC
5.35021 0.05359 0.05359

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/cc-pVQZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.217
Mg2 0.000 0.000 -1.127
Br3 0.000 0.000 1.248
H4 0.000 1.021 -3.617
H5 0.884 -0.510 -3.617
H6 -0.884 -0.510 -3.617

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.09024.46491.09621.09621.0962
Mg22.09022.37472.69092.69092.6909
Br34.46492.37474.97044.97044.9704
H41.09622.69094.97041.76821.7682
H51.09622.69094.97041.76821.7682
H61.09622.69094.97041.76821.7682

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 111.373
Mg2 C1 H5 111.373 Mg2 C1 H6 111.373
H4 C1 H5 107.504 H4 C1 H6 107.504
H5 C1 H6 107.504
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.425      
2 Mg 0.629      
3 Br -0.419      
4 H 0.072      
5 H 0.072      
6 H 0.072      


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 -2.223 2.223
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.714 0.000 0.000
y 0.000 -34.714 0.000
z 0.000 0.000 -43.771
Traceless
 xyz
x 4.528 0.000 0.000
y 0.000 4.528 0.000
z 0.000 0.000 -9.057
Polar
3z2-r2-18.114
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 7.912 0.000 0.000
y 0.000 7.911 0.000
z 0.000 0.000 12.918


<r2> (average value of r2) Å2
<r2> 197.765
(<r2>)1/2 14.063