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

using model chemistry: TPSSh/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at TPSSh/3-21G
 hartrees
Energy at 0K-2800.369464
Energy at 298.15K 
HF Energy-2800.369464
Nuclear repulsion energy163.037886
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 TPSSh/3-21G
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 3011 2917 21.61 104.38 0.00 0.00
2 A1 1258 1219 0.21 53.31 0.02 0.04
3 A1 616 597 44.18 15.57 0.04 0.08
4 A1 294 284 10.06 20.47 0.19 0.32
5 E 3085 2989 15.59 134.63 0.75 0.86
5 E 3085 2989 15.59 134.64 0.75 0.86
6 E 1540 1492 0.09 7.48 0.75 0.86
6 E 1540 1492 0.09 7.48 0.75 0.86
7 E 665 644 109.65 5.08 0.75 0.86
7 E 665 644 109.65 5.08 0.75 0.86
8 E 93 90 23.68 0.01 0.75 0.86
8 E 93 90 23.68 0.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7972.4 cm-1
Scaled (by 0.9688) Zero Point Vibrational Energy (zpe) 7723.7 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 TPSSh/3-21G
ABC
5.30372 0.05267 0.05267

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/3-21G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.239
Mg2 0.000 0.000 -1.145
Br3 0.000 0.000 1.260
H4 0.000 1.025 -3.638
H5 0.888 -0.513 -3.638
H6 -0.888 -0.513 -3.638

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.09354.49841.10051.10051.1005
Mg22.09352.40502.69582.69582.6958
Br34.49842.40505.00435.00435.0043
H41.10052.69585.00431.77591.7759
H51.10052.69585.00431.77591.7759
H61.10052.69585.00431.77591.7759

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 111.301
Mg2 C1 H5 111.301 Mg2 C1 H6 111.301
H4 C1 H5 107.582 H4 C1 H6 107.582
H5 C1 H6 107.581
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.997      
2 Mg 0.781      
3 Br -0.423      
4 H 0.213      
5 H 0.213      
6 H 0.213      


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 -2.671 2.671
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.069 0.000 0.000
y 0.000 5.069 0.000
z 0.000 0.000 10.651


<r2> (average value of r2) Å2
<r2> 200.554
(<r2>)1/2 14.162