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All results from a given calculation for HCCBr (bromoacetylene)

using model chemistry: BLYP/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 BLYP/6-311G*
 hartrees
Energy at 0K-2650.862935
Energy at 298.15K-2650.864947
HF Energy-2650.862935
Nuclear repulsion energy122.574116
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 BLYP/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 3389 3381 73.91      
2 Σ 2101 2096 27.24      
3 Σ 574 573 1.70      
4 Π 528 527 50.81      
4 Π 528 527 50.81      
5 Π 239 238 1.48      
5 Π 239 238 1.48      

Unscaled Zero Point Vibrational Energy (zpe) 3799.4 cm-1
Scaled (by 0.9975) Zero Point Vibrational Energy (zpe) 3789.9 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 BLYP/6-311G*
B
0.13062

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -2.336
C2 0.000 0.000 -1.124
Br3 0.000 0.000 0.690
H4 0.000 0.000 -3.405

Atom - Atom Distances (Å)
  C1 C2 Br3 H4
C11.21163.02601.0698
C21.21161.81452.2814
Br33.02601.81454.0959
H41.06982.28144.0959

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 BLYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.190      
2 C -0.136      
3 Br 0.092      
4 H 0.234      


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 -0.109 0.109
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.826 0.000 0.000
y 0.000 -30.826 0.000
z 0.000 0.000 -22.223
Traceless
 xyz
x -4.302 0.000 0.000
y 0.000 -4.302 0.000
z 0.000 0.000 8.603
Polar
3z2-r217.207
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 2.651 0.000 0.000
y 0.000 2.651 0.000
z 0.000 0.000 9.197


<r2> (average value of r2) Å2
<r2> 86.055
(<r2>)1/2 9.277