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: QCISD/aug-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 QCISD/aug-cc-pVDZ
 hartrees
Energy at 0K-2812.050826
Energy at 298.15K 
HF Energy-2811.693336
Nuclear repulsion energy164.041211
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 QCISD/aug-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 3011 2916 29.24      
2 A1 1157 1121 2.69      
3 A1 598 580 80.50      
4 A1 295 286 13.91      
5 E 3096 2999 19.62      
5 E 3096 2999 19.62      
6 E 1435 1390 0.33      
6 E 1435 1390 0.33      
7 E 564 546 71.50      
7 E 564 546 71.50      
8 E 105 102 29.54      
8 E 105 102 29.54      

Unscaled Zero Point Vibrational Energy (zpe) 7730.3 cm-1
Scaled (by 0.9687) Zero Point Vibrational Energy (zpe) 7488.3 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 QCISD/aug-cc-pVDZ
ABC
5.26101 0.05326 0.05326

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.228
Mg2 0.000 0.000 -1.127
Br3 0.000 0.000 1.251
H4 0.000 1.029 -3.635
H5 0.892 -0.515 -3.635
H6 -0.892 -0.515 -3.635

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.10084.47931.10691.10691.1069
Mg22.10082.37852.71052.71052.7105
Br34.47932.37854.99324.99324.9932
H41.10692.71054.99321.78311.7831
H51.10692.71054.99321.78311.7831
H61.10692.71054.99321.78311.7831

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 111.553
Mg2 C1 H5 111.553 Mg2 C1 H6 111.553
H4 C1 H5 107.312 H4 C1 H6 107.312
H5 C1 H6 107.312
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability