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

using model chemistry: HSEh1PBE/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 HSEh1PBE/STO-3G
 hartrees
Energy at 0K-2782.738474
Energy at 298.15K 
HF Energy-2782.738474
Nuclear repulsion energy174.994590
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 HSEh1PBE/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 3313 2925 1.75 50.60 0.00 0.00
2 A1 1475 1303 0.85 1.42 0.29 0.45
3 A1 841 743 91.91 3.52 0.26 0.42
4 A1 410 362 9.56 7.60 0.29 0.45
5 E 3490 3082 8.61 36.81 0.75 0.86
5 E 3490 3082 8.61 36.81 0.75 0.86
6 E 1753 1548 0.14 14.85 0.75 0.86
6 E 1753 1548 0.14 14.85 0.75 0.86
7 E 749 661 51.08 0.30 0.75 0.86
7 E 749 661 51.08 0.30 0.75 0.86
8 E 122 108 44.84 0.06 0.75 0.86
8 E 122 108 44.84 0.06 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9132.7 cm-1
Scaled (by 0.8831) Zero Point Vibrational Energy (zpe) 8065.1 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 HSEh1PBE/STO-3G
ABC
5.43549 0.06095 0.06095

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/STO-3G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.012
Mg2 0.000 0.000 -1.047
Br3 0.000 0.000 1.169
H4 0.000 1.013 -3.430
H5 0.877 -0.506 -3.430
H6 -0.877 -0.506 -3.430

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C11.96474.18121.09581.09581.0958
Mg21.96472.21652.58952.58952.5895
Br34.18122.21654.70984.70984.7098
H41.09582.58954.70981.75421.7542
H51.09582.58954.70981.75421.7542
H61.09582.58954.70981.75421.7542

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 112.447
Mg2 C1 H5 112.447 Mg2 C1 H6 112.447
H4 C1 H5 106.338 H4 C1 H6 106.338
H5 C1 H6 106.338
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.487      
2 Mg 0.849      
3 Br -0.460      
4 H 0.033      
5 H 0.033      
6 H 0.033      


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 -2.108 2.108
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.148 0.000 0.000
y 0.000 -29.148 0.000
z 0.000 0.000 -42.126
Traceless
 xyz
x 6.489 0.000 0.000
y 0.000 6.489 0.000
z 0.000 0.000 -12.978
Polar
3z2-r2-25.956
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 1.434 0.000 0.000
y 0.000 1.434 0.000
z 0.000 0.000 5.035


<r2> (average value of r2) Å2
<r2> 174.730
(<r2>)1/2 13.219