return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B3PW91/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B3PW91/Def2TZVPP
 hartrees
Energy at 0K-2814.204330
Energy at 298.15K 
HF Energy-2814.204330
Nuclear repulsion energy166.069516
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 B3PW91/Def2TZVPP
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 3025 19.41 152.53 0.00 0.00
2 A1 1149 1149 0.21 90.31 0.15 0.27
3 A1 605 605 81.01 13.56 0.11 0.21
4 A1 297 297 14.78 22.84 0.16 0.28
5 E 3107 3107 10.73 113.00 0.75 0.86
5 E 3107 3107 10.73 112.98 0.75 0.86
6 E 1442 1442 0.00 1.07 0.75 0.86
6 E 1442 1442 0.00 1.07 0.75 0.86
7 E 581 581 72.82 4.15 0.75 0.86
7 E 581 581 72.82 4.15 0.75 0.86
8 E 101 101 25.85 1.05 0.75 0.86
8 E 101 101 25.85 1.05 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7768.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7768.5 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 B3PW91/Def2TZVPP
ABC
5.38351 0.05461 0.05461

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/Def2TZVPP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.187
Mg2 0.000 0.000 -1.115
Br3 0.000 0.000 1.236
H4 0.000 1.018 -3.586
H5 0.881 -0.509 -3.586
H6 -0.881 -0.509 -3.586

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.07154.42271.09301.09301.0930
Mg22.07152.35122.67172.67172.6717
Br34.42272.35124.92774.92774.9277
H41.09302.67174.92771.76271.7627
H51.09302.67174.92771.76271.7627
H61.09302.67174.92771.76271.7627

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 111.398
Mg2 C1 H5 111.398 Mg2 C1 H6 111.398
H4 C1 H5 107.478 H4 C1 H6 107.478
H5 C1 H6 107.478
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.671      
2 Mg 0.768      
3 Br -0.467      
4 H 0.123      
5 H 0.123      
6 H 0.123      


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 -2.149 2.149
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.516 0.000 0.000
y 0.000 -34.516 0.000
z 0.000 0.000 -43.537
Traceless
 xyz
x 4.511 0.000 0.000
y 0.000 4.511 0.000
z 0.000 0.000 -9.022
Polar
3z2-r2-18.043
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 7.310 0.000 0.000
y 0.000 7.310 0.000
z 0.000 0.000 11.679


<r2> (average value of r2) Å2
<r2> 194.434
(<r2>)1/2 13.944