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All results from a given calculation for HCCBr (bromoacetylene)

using model chemistry: TPSSh/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-2650.871594
Energy at 298.15K-2650.873965
HF Energy-2650.871594
Nuclear repulsion energy124.141143
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/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 Σ 3470 3349 96.24      
2 Σ 2160 2085 32.97      
3 Σ 607 586 1.55      
4 Π 642 620 44.71      
4 Π 642 620 44.71      
5 Π 312 301 6.81      
5 Π 312 301 6.81      

Unscaled Zero Point Vibrational Energy (zpe) 4072.8 cm-1
Scaled (by 0.9652) Zero Point Vibrational Energy (zpe) 3931.1 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/aug-cc-pVTZ
B
0.13393

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -2.308
C2 0.000 0.000 -1.106
Br3 0.000 0.000 0.682
H4 0.000 0.000 -3.371

Atom - Atom Distances (Å)
  C1 C2 Br3 H4
C11.20232.98981.0628
C21.20231.78752.2650
Br32.98981.78754.0526
H41.06282.26504.0526

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/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.785      
2 C 0.409      
3 Br 0.082      
4 H 0.294      


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 -0.217 0.217
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 4.859 0.000 0.000
y 0.000 4.859 0.000
z 0.000 0.000 10.031


<r2> (average value of r2) Å2
<r2> 84.388
(<r2>)1/2 9.186