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: HF/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 HF/daug-cc-pVTZ
 hartrees
Energy at 0K-2811.786546
Energy at 298.15K 
HF Energy-2811.786546
Nuclear repulsion energy165.542356
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 HF/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 3124 2826 39.40 156.97 0.01 0.01
2 A1 1263 1142 0.00 90.27 0.22 0.36
3 A1 616 557 86.46 15.44 0.19 0.32
4 A1 304 275 17.01 18.48 0.13 0.23
5 E 3190 2886 25.57 117.90 0.75 0.86
5 E 3190 2886 25.57 117.90 0.75 0.86
6 E 1562 1413 0.07 0.20 0.75 0.86
6 E 1562 1413 0.07 0.20 0.75 0.86
7 E 606 548 80.49 8.10 0.75 0.86
7 E 606 548 80.49 8.10 0.75 0.86
8 E 106 96 34.72 1.18 0.75 0.86
8 E 106 96 34.72 1.18 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8116.4 cm-1
Scaled (by 0.9046) Zero Point Vibrational Energy (zpe) 7342.1 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 HF/daug-cc-pVTZ
ABC
5.45049 0.05416 0.05416

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.203
Mg2 0.000 0.000 -1.117
Br3 0.000 0.000 1.241
H4 0.000 1.011 -3.600
H5 0.876 -0.506 -3.600
H6 -0.876 -0.506 -3.600

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.08594.44391.08641.08641.0864
Mg22.08592.35802.68072.68072.6807
Br34.44392.35804.94514.94514.9451
H41.08642.68074.94511.75181.7518
H51.08642.68074.94511.75181.7518
H61.08642.68074.94511.75181.7518

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 111.414
Mg2 C1 H5 111.414 Mg2 C1 H6 111.414
H4 C1 H5 107.460 H4 C1 H6 107.460
H5 C1 H6 107.460
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -1.186      
2 Mg -0.096      
3 Br -0.467      
4 H 0.583      
5 H 0.583      
6 H 0.583      


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 -2.164 2.164
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.559 0.000 0.000
y 0.000 -34.559 0.000
z 0.000 0.000 -46.203
Traceless
 xyz
x 5.822 0.000 0.000
y 0.000 5.822 0.000
z 0.000 0.000 -11.644
Polar
3z2-r2-23.288
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 7.342 0.000 0.000
y 0.000 7.342 0.000
z 0.000 0.000 10.705


<r2> (average value of r2) Å2
<r2> 196.379
(<r2>)1/2 14.014