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All results from a given calculation for CHBr3 (bromoform)

using model chemistry: mPW1PW91/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 mPW1PW91/aug-cc-pVDZ
 hartrees
Energy at 0K-7761.647804
Energy at 298.15K-7761.657590
Nuclear repulsion energy806.963992
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 mPW1PW91/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 3209 3075 7.03      
2 A1 548 525 0.40      
3 A1 228 219 0.00      
4 E 1157 1109 29.74      
4 E 1157 1109 29.76      
5 E 671 643 106.61      
5 E 671 643 106.52      
6 E 155 149 0.00      
6 E 155 149 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 3975.6 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 3809.8 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 mPW1PW91/aug-cc-pVDZ
ABC
0.04123 0.04123 0.02094

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVDZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.526
H2 0.000 0.000 1.616
Br3 0.000 1.844 -0.045
Br4 1.597 -0.922 -0.045
Br5 -1.597 -0.922 -0.045

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4 Br5
C11.08961.93031.93031.9303
H21.08962.48172.48172.4817
Br31.93032.48173.19353.1935
Br41.93032.48173.19353.1935
Br51.93032.48173.19353.1935

picture of bromoform state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 Br3 107.222 H2 C1 Br4 107.222
H2 C1 Br5 107.222 Br3 C1 Br4 111.624
Br3 C1 Br5 111.624 Br4 C1 Br5 111.624
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -1.140      
2 H 0.077      
3 Br 0.354      
4 Br 0.354      
5 Br 0.354      


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 0.894 0.894
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -60.524 0.000 0.000
y 0.000 -60.524 0.000
z 0.000 0.000 -59.500
Traceless
 xyz
x -0.512 0.000 0.000
y 0.000 -0.512 0.000
z 0.000 0.000 1.024
Polar
3z2-r22.049
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 12.821 0.000 0.000
y 0.000 12.822 -0.001
z 0.000 -0.001 8.510


<r2> (average value of r2) Å2
<r2> 399.033
(<r2>)1/2 19.976