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All results from a given calculation for HCCBr (bromoacetylene)

using model chemistry: HF/Def2TZVPP

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 HF/Def2TZVPP
 hartrees
Energy at 0K-2648.676010
Energy at 298.15K 
HF Energy-2648.676010
Nuclear repulsion energy124.498104
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 HF/Def2TZVPP
Rotational Constants (cm-1) from geometry optimized at HF/Def2TZVPP
B
0.13491

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -2.294
C2 0.000 0.000 -1.115
Br3 0.000 0.000 0.680
H4 0.000 0.000 -3.348

Atom - Atom Distances (Å)
  C1 C2 Br3 H4
C11.17892.97391.0541
C21.17891.79502.2330
Br32.97391.79504.0280
H41.05412.23304.0280

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 HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.048      
2 C -0.361      
3 Br 0.118      
4 H 0.195      


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 -0.513 0.513
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.057 0.000 0.000
y 0.000 -31.057 0.000
z 0.000 0.000 -22.051
Traceless
 xyz
x -4.503 0.000 0.000
y 0.000 -4.503 0.000
z 0.000 0.000 9.007
Polar
3z2-r218.013
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 3.862 0.000 0.000
y 0.000 3.862 0.000
z 0.000 0.000 9.017


<r2> (average value of r2) Å2
<r2> 83.921
(<r2>)1/2 9.161