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All results from a given calculation for HCCBr (bromoacetylene)

using model chemistry: PBE1PBE/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 PBE1PBE/6-311G**
 hartrees
Energy at 0K-2650.460659
Energy at 298.15K-2650.463021
HF Energy-2650.460659
Nuclear repulsion energy124.234497
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 PBE1PBE/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 3496 3354 100.15      
2 Σ 2198 2109 25.80      
3 Σ 620 594 1.70      
4 Π 651 625 46.06      
4 Π 651 625 46.06      
5 Π 303 291 6.18      
5 Π 303 291 6.18      

Unscaled Zero Point Vibrational Energy (zpe) 4110.9 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 3944.0 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 PBE1PBE/6-311G**
B
0.13413

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-311G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -2.306
C2 0.000 0.000 -1.105
Br3 0.000 0.000 0.681
H4 0.000 0.000 -3.370

Atom - Atom Distances (Å)
  C1 C2 Br3 H4
C11.20122.98731.0639
C21.20121.78612.2650
Br32.98731.78614.0512
H41.06392.26504.0512

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 PBE1PBE/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.094      
2 C -0.123      
3 Br 0.094      
4 H 0.123      


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 -0.220 0.220
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.644 0.000 0.000
y 0.000 -30.644 0.000
z 0.000 0.000 -21.825
Traceless
 xyz
x -4.410 0.000 0.000
y 0.000 -4.410 0.000
z 0.000 0.000 8.819
Polar
3z2-r217.639
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 2.633 0.000 0.000
y 0.000 2.633 0.000
z 0.000 0.000 8.916


<r2> (average value of r2) Å2
<r2> 84.135
(<r2>)1/2 9.173