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

using model chemistry: BLYP/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 BLYP/3-21G
 hartrees
Energy at 0K-2800.443576
Energy at 298.15K 
HF Energy-2800.443576
Nuclear repulsion energy162.754693
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 BLYP/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 2955 2939 15.74 109.66 0.01 0.01
2 A1 1214 1207 2.28 54.33 0.02 0.03
3 A1 604 601 36.60 14.87 0.04 0.07
4 A1 287 286 9.02 25.51 0.19 0.32
5 E 3028 3011 11.96 127.15 0.75 0.86
5 E 3028 3011 11.96 127.15 0.75 0.86
6 E 1503 1495 0.02 6.95 0.75 0.86
6 E 1503 1495 0.02 6.95 0.75 0.86
7 E 659 655 98.00 4.09 0.75 0.86
7 E 659 655 98.00 4.09 0.75 0.86
8 E 89 89 16.42 0.01 0.75 0.86
8 E 89 89 16.42 0.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7809.4 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 7766.5 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 BLYP/3-21G
ABC
5.23811 0.05250 0.05250

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.246
Mg2 0.000 0.000 -1.147
Br3 0.000 0.000 1.262
H4 0.000 1.032 -3.639
H5 0.893 -0.516 -3.639
H6 -0.893 -0.516 -3.639

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.09834.50711.10421.10421.1042
Mg22.09832.40882.69692.69692.6969
Br34.50712.40885.00805.00805.0080
H41.10422.69695.00801.78701.7870
H51.10422.69695.00801.78701.7870
H61.10422.69695.00801.78701.7870

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 110.876
Mg2 C1 H5 110.876 Mg2 C1 H6 110.876
H4 C1 H5 108.031 H4 C1 H6 108.031
H5 C1 H6 108.031
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.894      
2 Mg 0.653      
3 Br -0.355      
4 H 0.199      
5 H 0.199      
6 H 0.199      


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 -2.484 2.484
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.881 0.000 0.000
y 0.000 -34.881 0.000
z 0.000 0.000 -42.040
Traceless
 xyz
x 3.579 0.000 0.000
y 0.000 3.579 0.000
z 0.000 0.000 -7.159
Polar
3z2-r2-14.318
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 5.439 0.000 0.000
y 0.000 5.439 0.000
z 0.000 0.000 11.646


<r2> (average value of r2) Å2
<r2> 200.897
(<r2>)1/2 14.174