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

using model chemistry: B2PLYP/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B2PLYP/STO-3G
 hartrees
Energy at 0K-2782.579576
Energy at 298.15K 
HF Energy-2782.555980
Nuclear repulsion energy174.772559
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 B2PLYP/STO-3G
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 3302 3302 3.00 50.06 0.00 0.01
2 A1 1503 1503 0.01 1.36 0.32 0.49
3 A1 847 847 92.29 3.78 0.27 0.43
4 A1 412 412 9.71 7.97 0.29 0.45
5 E 3475 3475 12.72 37.63 0.75 0.86
5 E 3475 3475 12.72 37.63 0.75 0.86
6 E 1771 1771 0.00 15.52 0.75 0.86
6 E 1771 1771 0.00 15.52 0.75 0.86
7 E 754 754 46.57 0.35 0.75 0.86
7 E 754 754 46.57 0.35 0.75 0.86
8 E 124 124 46.68 0.06 0.75 0.86
8 E 124 124 46.68 0.06 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9154.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9154.5 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 B2PLYP/STO-3G
ABC
5.41452 0.06080 0.06080

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/STO-3G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.015
Mg2 0.000 0.000 -1.048
Br3 0.000 0.000 1.171
H4 0.000 1.015 -3.436
H5 0.879 -0.507 -3.436
H6 -0.879 -0.507 -3.436

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C11.96694.18591.09871.09871.0987
Mg21.96692.21902.59462.59462.5946
Br34.18592.21904.71744.71744.7174
H41.09872.59464.71741.75761.7576
H51.09872.59464.71741.75761.7576
H61.09872.59464.71741.75761.7576

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 112.535
Mg2 C1 H5 112.535 Mg2 C1 H6 112.535
H4 C1 H5 106.241 H4 C1 H6 106.241
H5 C1 H6 106.241
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.456      
2 Mg 0.862      
3 Br -0.466      
4 H 0.020      
5 H 0.020      
6 H 0.020      


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 -2.074 2.074
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.193 0.000 0.000
y 0.000 -29.193 0.000
z 0.000 0.000 -42.796
Traceless
 xyz
x 6.801 0.000 0.000
y 0.000 6.801 0.000
z 0.000 0.000 -13.603
Polar
3z2-r2-27.205
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 1.408 0.000 0.000
y 0.000 1.408 0.000
z 0.000 0.000 5.023


<r2> (average value of r2) Å2
<r2> 175.272
(<r2>)1/2 13.239