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All results from a given calculation for HCCBr (bromoacetylene)

using model chemistry: PBEPBE/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 PBEPBE/6-311G**
 hartrees
Energy at 0K-2650.375243
Energy at 298.15K-2650.377414
HF Energy-2650.375243
Nuclear repulsion energy123.386139
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 PBEPBE/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 3416 3385 95.08      
2 Σ 2113 2094 30.73      
3 Σ 596 591 2.06      
4 Π 574 569 47.03      
4 Π 574 569 47.03      
5 Π 267 265 3.57      
5 Π 267 265 3.57      

Unscaled Zero Point Vibrational Energy (zpe) 3904.0 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 3868.5 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 PBEPBE/6-311G**
B
0.13226

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -2.324
C2 0.000 0.000 -1.111
Br3 0.000 0.000 0.686
H4 0.000 0.000 -3.394

Atom - Atom Distances (Å)
  C1 C2 Br3 H4
C11.21293.00951.0700
C21.21291.79662.2830
Br33.00951.79664.0795
H41.07002.28304.0795

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 PBEPBE/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.092      
2 C -0.125      
3 Br 0.101      
4 H 0.116      


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 -0.081 0.081
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.666 0.000 0.000
y 0.000 -30.666 0.000
z 0.000 0.000 -22.131
Traceless
 xyz
x -4.267 0.000 0.000
y 0.000 -4.267 0.000
z 0.000 0.000 8.535
Polar
3z2-r217.069
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 2.669 0.000 0.000
y 0.000 2.669 0.000
z 0.000 0.000 9.239


<r2> (average value of r2) Å2
<r2> 85.154
(<r2>)1/2 9.228