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

using model chemistry: BLYP/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 BLYP/TZVP
 hartrees
Energy at 0K-2614.078064
Energy at 298.15K 
HF Energy-2614.078064
Nuclear repulsion energy87.227309
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 BLYP/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 3015 3008 16.06 140.33 0.00 0.00
2 A1 1295 1291 25.53 0.59 0.42 0.59
3 A1 549 548 12.27 21.13 0.33 0.50
4 E 3119 3111 3.67 62.45 0.75 0.86
4 E 3119 3111 3.67 62.45 0.75 0.86
5 E 1440 1437 5.91 10.94 0.75 0.86
5 E 1440 1437 5.91 10.94 0.75 0.86
6 E 930 928 5.79 6.18 0.75 0.86
6 E 930 928 5.79 6.18 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7918.5 cm-1
Scaled (by 0.9975) Zero Point Vibrational Energy (zpe) 7898.7 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 BLYP/TZVP
ABC
5.14777 0.30436 0.30436

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.563
Br2 0.000 0.000 0.430
H3 0.000 1.041 -1.889
H4 0.901 -0.520 -1.889
H5 -0.901 -0.520 -1.889

Atom - Atom Distances (Å)
  C1 Br2 H3 H4 H5
C11.99311.09071.09071.0907
Br21.99312.54222.54222.5422
H31.09072.54221.80261.8026
H41.09072.54221.80261.8026
H51.09072.54221.80261.8026

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 107.411 Br2 C1 H4 107.411
Br2 C1 H5 107.411 H3 C1 H4 111.451
H3 C1 H5 111.451 H4 C1 H5 111.451
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.303      
2 Br -0.147      
3 H 0.150      
4 H 0.150      
5 H 0.150      


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 -1.986 1.986
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.176 0.000 0.000
y 0.000 -26.176 0.000
z 0.000 0.000 -22.254
Traceless
 xyz
x -1.961 0.000 0.000
y 0.000 -1.961 0.000
z 0.000 0.000 3.922
Polar
3z2-r27.844
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 3.409 0.000 0.000
y 0.000 3.409 0.000
z 0.000 0.000 6.065


<r2> (average value of r2) Å2
<r2> 50.622
(<r2>)1/2 7.115