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All results from a given calculation for HCCBr (bromoacetylene)

using model chemistry: HF/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 HF/6-311G*
 hartrees
Energy at 0K-2648.612517
Energy at 298.15K-2648.615099
HF Energy-2648.612517
Nuclear repulsion energy124.210103
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/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 3633 3286 77.11      
2 Σ 2356 2131 12.48      
3 Σ 637 576 0.27      
4 Π 781 706 47.71      
4 Π 781 706 47.71      
5 Π 350 316 9.01      
5 Π 350 316 9.01      

Unscaled Zero Point Vibrational Energy (zpe) 4443.7 cm-1
Scaled (by 0.9044) Zero Point Vibrational Energy (zpe) 4018.9 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 HF/6-311G*
B
0.13429

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -2.299
C2 0.000 0.000 -1.117
Br3 0.000 0.000 0.681
H4 0.000 0.000 -3.355

Atom - Atom Distances (Å)
  C1 C2 Br3 H4
C11.18192.98041.0556
C21.18191.79852.2375
Br32.98041.79854.0360
H41.05562.23754.0360

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/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.203      
2 C -0.147      
3 Br 0.064      
4 H 0.286      


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 -0.540 0.540
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.140 0.000 0.000
y 0.000 -31.140 0.000
z 0.000 0.000 -21.516
Traceless
 xyz
x -4.812 0.000 0.000
y 0.000 -4.812 0.000
z 0.000 0.000 9.624
Polar
3z2-r219.247
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 2.559 0.000 0.000
y 0.000 2.559 0.000
z 0.000 0.000 8.391


<r2> (average value of r2) Å2
<r2> 84.149
(<r2>)1/2 9.173