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-pVTZ

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-pVTZ
 hartrees
Energy at 0K-2813.830715
Energy at 298.15K 
HF Energy-2813.830715
Nuclear repulsion energy166.319837
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-pVTZ
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 3033 3033 19.44 197.18 0.00 0.00
2 A1 1146 1146 0.10 96.84 0.22 0.35
3 A1 609 609 81.17 12.86 0.16 0.28
4 A1 300 300 15.00 25.21 0.13 0.23
5 E 3116 3116 10.20 109.76 0.75 0.86
5 E 3116 3116 10.20 109.40 0.75 0.86
6 E 1441 1441 0.00 0.31 0.75 0.86
6 E 1441 1441 0.00 0.26 0.74 0.85
7 E 580 580 69.55 7.48 0.75 0.86
7 E 580 580 69.55 7.73 0.75 0.86
8 E 102 102 26.29 1.50 0.75 0.86
8 E 102 102 26.29 1.52 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7782.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7782.5 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 PBE1PBE/daug-cc-pVTZ
ABC
5.37959 0.05478 0.05478

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.182
Mg2 0.000 0.000 -1.113
Br3 0.000 0.000 1.234
H4 0.000 1.018 -3.580
H5 0.882 -0.509 -3.580
H6 -0.882 -0.509 -3.580

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.06884.41591.09321.09321.0932
Mg22.06882.34712.66892.66892.6689
Br34.41592.34714.92064.92064.9206
H41.09322.66894.92061.76331.7633
H51.09322.66894.92061.76331.7633
H61.09322.66894.92061.76331.7633

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 111.366
Mg2 C1 H5 111.366 Mg2 C1 H6 111.366
H4 C1 H5 107.512 H4 C1 H6 107.512
H5 C1 H6 107.512
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.812      
2 Mg 0.232      
3 Br -0.734      
4 H 0.438      
5 H 0.438      
6 H 0.438      


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 -2.155 2.155
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.555 0.000 0.000
y 0.000 -34.555 0.000
z 0.000 0.000 -43.812
Traceless
 xyz
x 4.628 0.000 0.000
y 0.000 4.628 0.000
z 0.000 0.000 -9.257
Polar
3z2-r2-18.514
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 7.890 0.000 0.000
y 0.000 7.890 0.000
z 0.000 0.000 12.187


<r2> (average value of r2) Å2
<r2> 193.982
(<r2>)1/2 13.928