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All results from a given calculation for CH3Br (methyl bromide)

using model chemistry: CCSD=FULL/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at CCSD=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-2610.125584
Energy at 298.15K 
HF Energy-2609.686172
Nuclear repulsion energy90.380467
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 CCSD=FULL/6-31G(2df,p)
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 3142 2958 14.32      
2 A1 1392 1310 15.40      
3 A1 672 632 8.08      
4 E 3246 3056 1.72      
4 E 3246 3056 1.72      
5 E 1527 1438 4.77      
5 E 1527 1438 4.77      
6 E 1006 947 4.27      
6 E 1006 947 4.27      

Unscaled Zero Point Vibrational Energy (zpe) 8381.6 cm-1
Scaled (by 0.9416) Zero Point Vibrational Energy (zpe) 7892.1 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 CCSD=FULL/6-31G(2df,p)
ABC
5.29737 0.32917 0.32917

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD=FULL/6-31G(2df,p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.492
Br2 0.000 0.000 0.414
H3 0.000 1.026 -1.845
H4 0.888 -0.513 -1.845
H5 -0.888 -0.513 -1.845

Atom - Atom Distances (Å)
  C1 Br2 H3 H4 H5
C11.90581.08491.08491.0849
Br21.90582.48072.48072.4807
H31.08492.48071.77701.7770
H41.08492.48071.77701.7770
H51.08492.48071.77701.7770

picture of methyl bromide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 H3 108.979 Br2 C1 H4 108.979
Br2 C1 H5 108.979 H3 C1 H4 109.959
H3 C1 H5 109.959 H4 C1 H5 109.959
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability