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

using model chemistry: B2PLYP/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 B2PLYP/cc-pVTZ
 hartrees
Energy at 0K-2813.735934
Energy at 298.15K 
HF Energy-2813.591198
Nuclear repulsion energy166.040504
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 B2PLYP/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 3036 2913 19.88 156.08 0.00 0.00
2 A1 1167 1120 1.23 83.01 0.17 0.28
3 A1 608 583 78.24 12.47 0.12 0.21
4 A1 301 289 14.67 21.21 0.18 0.30
5 E 3114 2988 13.24 118.14 0.75 0.86
5 E 3114 2988 13.24 118.14 0.75 0.86
6 E 1465 1405 0.02 0.90 0.75 0.86
6 E 1465 1405 0.02 0.90 0.75 0.86
7 E 588 564 70.07 5.32 0.75 0.86
7 E 588 564 70.08 5.32 0.75 0.86
8 E 101 97 27.04 0.86 0.75 0.86
8 E 101 97 27.04 0.86 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7823.1 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 7505.5 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 B2PLYP/cc-pVTZ
ABC
5.39976 0.05455 0.05455

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.190
Mg2 0.000 0.000 -1.114
Br3 0.000 0.000 1.236
H4 0.000 1.016 -3.587
H5 0.880 -0.508 -3.587
H6 -0.880 -0.508 -3.587

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.07634.42691.09081.09081.0908
Mg22.07632.35052.67352.67352.6735
Br34.42692.35054.92934.92934.9293
H41.09082.67354.92931.76001.7600
H51.09082.67354.92931.76001.7600
H61.09082.67354.92931.76001.7600

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 111.319
Mg2 C1 H5 111.319 Mg2 C1 H6 111.319
H4 C1 H5 107.562 H4 C1 H6 107.562
H5 C1 H6 107.562
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.546      
2 Mg 0.589      
3 Br -0.380      
4 H 0.112      
5 H 0.112      
6 H 0.112      


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 -2.156 2.156
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.703 0.000 0.000
y 0.000 -34.703 0.000
z 0.000 0.000 -44.411
Traceless
 xyz
x 4.854 0.000 0.000
y 0.000 4.854 0.000
z 0.000 0.000 -9.708
Polar
3z2-r2-19.415
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 6.841 0.000 0.000
y 0.000 6.841 0.000
z 0.000 0.000 11.476


<r2> (average value of r2) Å2
<r2> 194.843
(<r2>)1/2 13.959