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All results from a given calculation for HCCBr (bromoacetylene)

using model chemistry: B97D3/6-31G(2df,p)

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 B97D3/6-31G(2df,p)
 hartrees
Energy at 0K-2649.854004
Energy at 298.15K-2649.856375
HF Energy-2649.854004
Nuclear repulsion energy124.942680
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 B97D3/6-31G(2df,p)
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 3474 3474 88.86      
2 Σ 2148 2148 23.78      
3 Σ 618 618 1.78      
4 Π 595 595 44.46      
4 Π 595 595 44.46      
5 Π 337 337 3.32      
5 Π 337 337 3.32      

Unscaled Zero Point Vibrational Energy (zpe) 4050.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4050.9 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 B97D3/6-31G(2df,p)
B
0.13546

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-31G(2df,p)

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -2.300
C2 0.000 0.000 -1.089
Br3 0.000 0.000 0.677
H4 0.000 0.000 -3.365

Atom - Atom Distances (Å)
  C1 C2 Br3 H4
C11.21042.97681.0651
C21.21041.76632.2755
Br32.97681.76634.0418
H41.06512.27554.0418

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 B97D3/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.502      
2 C 0.106      
3 Br 0.189      
4 H 0.206      


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 -0.206 0.206
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.734 0.000 0.000
y 0.000 -29.734 0.000
z 0.000 0.000 -22.221
Traceless
 xyz
x -3.757 0.000 0.000
y 0.000 -3.757 0.000
z 0.000 0.000 7.513
Polar
3z2-r215.026
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 3.621 0.000 0.000
y 0.000 3.621 0.000
z 0.000 0.000 9.216


<r2> (average value of r2) Å2
<r2> 83.225
(<r2>)1/2 9.123