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

using model chemistry: SVWN/aug-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 SVWN/aug-cc-pVTZ
 hartrees
Energy at 0K-2611.098363
Energy at 298.15K 
HF Energy-2611.098363
Nuclear repulsion energy89.774709
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 SVWN/aug-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 3011 2987 10.36 168.55 0.00 0.01
2 A1 1260 1250 6.85 0.27 0.00 0.00
3 A1 635 630 7.31 16.76 0.13 0.24
4 E 3122 3098 0.00 54.71 0.75 0.86
4 E 3122 3098 0.00 54.67 0.75 0.86
5 E 1396 1385 8.18 3.53 0.75 0.86
5 E 1396 1385 8.18 3.51 0.75 0.86
6 E 925 918 4.94 0.28 0.75 0.86
6 E 925 918 4.94 0.27 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7896.6 cm-1
Scaled (by 0.9921) Zero Point Vibrational Energy (zpe) 7834.2 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 SVWN/aug-cc-pVTZ
ABC
5.16505 0.32505 0.32505

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.505
Br2 0.000 0.000 0.416
H3 0.000 1.039 -1.845
H4 0.900 -0.519 -1.845
H5 -0.900 -0.519 -1.845

Atom - Atom Distances (Å)
  C1 Br2 H3 H4 H5
C11.92101.09321.09321.0932
Br21.92102.48832.48832.4883
H31.09322.48831.79961.7996
H41.09322.48831.79961.7996
H51.09322.48831.79961.7996

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 108.124 Br2 C1 H4 108.124
Br2 C1 H5 108.124 H3 C1 H4 110.784
H3 C1 H5 110.784 H4 C1 H5 110.784
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at SVWN/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.737      
2 Br 0.042      
3 H 0.232      
4 H 0.232      
5 H 0.232      


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 -1.821 1.821
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.949 0.000 0.000
y 0.000 -25.949 0.000
z 0.000 0.000 -22.410
Traceless
 xyz
x -1.770 0.000 0.000
y 0.000 -1.770 0.000
z 0.000 0.000 3.540
Polar
3z2-r27.080
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 4.985 0.000 0.000
y 0.000 4.985 0.000
z 0.000 0.000 6.800


<r2> (average value of r2) Å2
<r2> 48.568
(<r2>)1/2 6.969