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All results from a given calculation for HCCBr (bromoacetylene)

using model chemistry: B97D3/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 B97D3/aug-cc-pVTZ
 hartrees
Energy at 0K-2652.219035
Energy at 298.15K-2652.221315
HF Energy-2652.219035
Nuclear repulsion energy123.711598
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 B97D3/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 3429 3377 90.18      
2 Σ 2114 2082 37.95      
3 Σ 589 580 1.94      
4 Π 601 591 44.40      
4 Π 601 591 44.40      
5 Π 298 294 5.98      
5 Π 298 294 5.98      

Unscaled Zero Point Vibrational Energy (zpe) 3964.6 cm-1
Scaled (by 0.9847) Zero Point Vibrational Energy (zpe) 3903.9 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 B97D3/aug-cc-pVTZ
B
0.13298

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/aug-cc-pVTZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -2.317
C2 0.000 0.000 -1.109
Br3 0.000 0.000 0.684
H4 0.000 0.000 -3.382

Atom - Atom Distances (Å)
  C1 C2 Br3 H4
C11.20783.00091.0651
C21.20781.79312.2729
Br33.00091.79314.0660
H41.06512.27294.0660

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 B97D3/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.894      
2 C 0.370      
3 Br 0.185      
4 H 0.339      


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 -0.124 0.124
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.625 0.000 0.000
y 0.000 -30.625 0.000
z 0.000 0.000 -22.785
Traceless
 xyz
x -3.920 0.000 0.000
y 0.000 -3.920 0.000
z 0.000 0.000 7.841
Polar
3z2-r215.682
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 5.003 0.000 0.000
y 0.000 5.003 0.000
z 0.000 0.000 10.282


<r2> (average value of r2) Å2
<r2> 84.898
(<r2>)1/2 9.214