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

using model chemistry: B3LYP/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B3LYP/6-31+G**
 hartrees
Energy at 0K-2811.802685
Energy at 298.15K 
HF Energy-2811.802685
Nuclear repulsion energy165.818393
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 B3LYP/6-31+G**
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 3025 2917 32.24 152.34 0.00 0.00
2 A1 1175 1133 0.53 127.49 0.15 0.26
3 A1 604 582 77.65 13.42 0.17 0.29
4 A1 296 286 16.59 26.09 0.17 0.30
5 E 3107 2996 12.61 129.12 0.75 0.86
5 E 3107 2996 12.61 129.12 0.75 0.86
6 E 1462 1410 0.34 1.06 0.75 0.86
6 E 1462 1410 0.34 1.06 0.75 0.86
7 E 616 594 73.31 5.16 0.75 0.86
7 E 616 594 73.31 5.16 0.75 0.86
8 E 155 150 24.68 1.13 0.75 0.86
8 E 155 150 24.68 1.13 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7890.3 cm-1
Scaled (by 0.9642) Zero Point Vibrational Energy (zpe) 7607.8 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 B3LYP/6-31+G**
ABC
5.34001 0.05443 0.05443

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31+G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.194
Mg2 0.000 0.000 -1.115
Br3 0.000 0.000 1.238
H4 0.000 1.022 -3.591
H5 0.885 -0.511 -3.591
H6 -0.885 -0.511 -3.591

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.07854.43151.09641.09641.0964
Mg22.07852.35302.67842.67842.6784
Br34.43152.35304.93584.93584.9358
H41.09642.67844.93581.76981.7698
H51.09642.67844.93581.76981.7698
H61.09642.67844.93581.76981.7698

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 111.251
Mg2 C1 H5 111.251 Mg2 C1 H6 111.251
H4 C1 H5 107.634 H4 C1 H6 107.634
H5 C1 H6 107.634
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.837      
2 Mg 0.787      
3 Br -0.410      
4 H 0.154      
5 H 0.154      
6 H 0.154      


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 -34.974 0.000 0.000
y 0.000 -34.974 0.000
z 0.000 0.000 -44.259
Traceless
 xyz
x 4.642 0.000 0.000
y 0.000 4.642 0.000
z 0.000 0.000 -9.285
Polar
3z2-r2-18.569
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 6.628 0.000 0.000
y 0.000 6.628 0.000
z 0.000 0.000 12.265


<r2> (average value of r2) Å2
<r2> 195.344
(<r2>)1/2 13.977