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All results from a given calculation for HCCBr (bromoacetylene)

using model chemistry: TPSSh/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 1Σ
Energy calculated at TPSSh/6-311G*
 hartrees
Energy at 0K-2650.771714
Energy at 298.15K-2650.773908
HF Energy-2650.771714
Nuclear repulsion energy123.846214
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 TPSSh/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 3471 3343 75.71      
2 Σ 2163 2083 27.41      
3 Σ 605 582 1.69      
4 Π 586 564 50.19      
4 Π 586 564 50.19      
5 Π 272 262 3.17      
5 Π 272 262 3.17      

Unscaled Zero Point Vibrational Energy (zpe) 3976.4 cm-1
Scaled (by 0.9632) Zero Point Vibrational Energy (zpe) 3830.1 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 TPSSh/6-311G*
B
0.13329

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-311G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -2.314
C2 0.000 0.000 -1.109
Br3 0.000 0.000 0.683
H4 0.000 0.000 -3.378

Atom - Atom Distances (Å)
  C1 C2 Br3 H4
C11.20482.99691.0644
C21.20481.79212.2692
Br32.99691.79214.0613
H41.06442.26924.0613

picture of bromoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Br3 180.000 C2 C1 H4 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.205      
2 C -0.117      
3 Br 0.087      
4 H 0.235      


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 -0.230 0.230
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.614 0.000 0.000
y 0.000 2.614 0.000
z 0.000 0.000 8.992


<r2> (average value of r2) Å2
<r2> 84.512
(<r2>)1/2 9.193