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: PBE1PBE/daug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at PBE1PBE/daug-cc-pVDZ
 hartrees
Energy at 0K-2813.739292
Energy at 298.15K 
HF Energy-2813.739292
Nuclear repulsion energy165.294276
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 PBE1PBE/daug-cc-pVDZ
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 3030 3030 20.31 341.22 0.03 0.06
2 A1 1033 1033 0.31 186.96 0.47 0.64
3 A1 601 601 81.84 4.05 0.09 0.16
4 A1 296 296 14.96 22.25 0.12 0.21
5 E 3129 3129 11.60 112.82 0.75 0.86
5 E 3129 3129 11.60 112.83 0.75 0.86
6 E 1412 1412 0.01 0.19 0.75 0.86
6 E 1412 1412 0.01 0.19 0.75 0.86
7 E 562 562 69.88 7.04 0.75 0.86
7 E 562 562 69.89 7.02 0.75 0.86
8 E 100 100 25.88 1.56 0.75 0.86
8 E 100 100 25.89 1.55 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7682.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7682.7 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 PBE1PBE/daug-cc-pVDZ
ABC
5.30945 0.05414 0.05414

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/daug-cc-pVDZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.199
Mg2 0.000 0.000 -1.121
Br3 0.000 0.000 1.242
H4 0.000 1.025 -3.601
H5 0.887 -0.512 -3.601
H6 -0.887 -0.512 -3.601

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.07764.44051.10091.10091.1009
Mg22.07762.36292.68332.68332.6833
Br34.44052.36294.95014.95014.9501
H41.10092.68334.95011.77491.7749
H51.10092.68334.95011.77491.7749
H61.10092.68334.95011.77491.7749

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 111.437
Mg2 C1 H5 111.437 Mg2 C1 H6 111.437
H4 C1 H5 107.436 H4 C1 H6 107.436
H5 C1 H6 107.436
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.189      
2 Mg -0.818      
3 Br 0.060      
4 H -0.144      
5 H -0.144      
6 H -0.144      


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 -2.237 2.237
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.787 0.000 0.000
y 0.000 -34.787 0.000
z 0.000 0.000 -43.606
Traceless
 xyz
x 4.410 0.000 0.000
y 0.000 4.410 0.000
z 0.000 0.000 -8.819
Polar
3z2-r2-17.638
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 7.925 0.000 0.000
y 0.000 7.925 0.000
z 0.000 0.000 12.346


<r2> (average value of r2) Å2
<r2> 196.063
(<r2>)1/2 14.002