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

using model chemistry: B1B95/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B1B95/TZVP
 hartrees
Energy at 0K-2814.558228
Energy at 298.15K 
HF Energy-2814.558228
Nuclear repulsion energy165.439705
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 B1B95/TZVP
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 3053 2921 24.99 163.61 0.00 0.01
2 A1 1181 1130 0.06 77.59 0.29 0.45
3 A1 603 577 74.06 17.09 0.20 0.33
4 A1 292 280 17.97 21.49 0.27 0.43
5 E 3138 3003 11.86 126.17 0.75 0.86
5 E 3138 3003 11.86 126.16 0.75 0.86
6 E 1454 1392 2.03 10.22 0.75 0.86
6 E 1454 1392 2.03 10.22 0.75 0.86
7 E 616 589 78.99 0.44 0.75 0.86
7 E 616 589 78.99 0.44 0.75 0.86
8 E 102 98 32.97 0.49 0.75 0.86
8 E 102 98 32.97 0.49 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7874.9 cm-1
Scaled (by 0.9569) Zero Point Vibrational Energy (zpe) 7535.5 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 B1B95/TZVP
ABC
5.41605 0.05420 0.05420

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/TZVP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.196
Mg2 0.000 0.000 -1.123
Br3 0.000 0.000 1.241
H4 0.000 1.015 -3.596
H5 0.879 -0.507 -3.596
H6 -0.879 -0.507 -3.596

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.07334.43741.09051.09051.0905
Mg22.07332.36412.67312.67312.6731
Br34.43742.36414.94244.94244.9424
H41.09052.67314.94241.75741.7574
H51.09052.67314.94241.75741.7574
H61.09052.67314.94241.75741.7574

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 111.503
Mg2 C1 H5 111.503 Mg2 C1 H6 111.503
H4 C1 H5 107.365 H4 C1 H6 107.365
H5 C1 H6 107.365
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.941      
2 Mg 1.095      
3 Br -0.601      
4 H 0.149      
5 H 0.149      
6 H 0.149      


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 -2.635 2.635
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.486 0.000 0.000
y 0.000 -34.486 0.000
z 0.000 0.000 -44.976
Traceless
 xyz
x 5.245 0.000 0.000
y 0.000 5.245 0.000
z 0.000 0.000 -10.490
Polar
3z2-r2-20.979
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 5.237 0.000 0.000
y 0.000 5.237 0.000
z 0.000 0.000 10.971


<r2> (average value of r2) Å2
<r2> 195.948
(<r2>)1/2 13.998