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

using model chemistry: mPW1PW91/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 mPW1PW91/Def2TZVPP
 hartrees
Energy at 0K-2814.415301
Energy at 298.15K 
HF Energy-2814.415301
Nuclear repulsion energy166.320756
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 mPW1PW91/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 3041 3041 18.77 149.90 0.00 0.00
2 A1 1155 1155 0.08 87.46 0.16 0.27
3 A1 609 609 81.63 13.24 0.11 0.21
4 A1 300 300 14.72 21.86 0.16 0.27
5 E 3124 3124 10.48 111.48 0.75 0.86
5 E 3124 3124 10.48 111.55 0.75 0.86
6 E 1448 1448 0.00 1.05 0.75 0.86
6 E 1448 1448 0.00 1.05 0.75 0.86
7 E 582 582 74.39 4.19 0.75 0.86
7 E 582 582 74.39 4.19 0.75 0.86
8 E 102 102 26.38 1.01 0.75 0.86
8 E 102 102 26.38 1.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7807.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7807.1 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 mPW1PW91/Def2TZVPP
ABC
5.39670 0.05478 0.05478

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/Def2TZVPP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.182
Mg2 0.000 0.000 -1.113
Br3 0.000 0.000 1.234
H4 0.000 1.016 -3.580
H5 0.880 -0.508 -3.580
H6 -0.880 -0.508 -3.580

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.06874.41611.09181.09181.0918
Mg22.06872.34742.66842.66842.6684
Br34.41612.34744.92074.92074.9207
H41.09182.66844.92071.76051.7605
H51.09182.66844.92071.76051.7605
H61.09182.66844.92071.76051.7605

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 111.409
Mg2 C1 H5 111.409 Mg2 C1 H6 111.409
H4 C1 H5 107.466 H4 C1 H6 107.466
H5 C1 H6 107.466
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.654      
2 Mg 0.768      
3 Br -0.470      
4 H 0.119      
5 H 0.119      
6 H 0.119      


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 -2.130 2.130
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.485 0.000 0.000
y 0.000 -34.485 0.000
z 0.000 0.000 -43.580
Traceless
 xyz
x 4.548 0.000 0.000
y 0.000 4.548 0.000
z 0.000 0.000 -9.095
Polar
3z2-r2-18.190
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 7.249 0.000 0.000
y 0.000 7.249 0.000
z 0.000 0.000 11.488


<r2> (average value of r2) Å2
<r2> 193.919
(<r2>)1/2 13.925