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All results from a given calculation for HCCBr (bromoacetylene)

using model chemistry: HSEh1PBE/TZVP

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 HSEh1PBE/TZVP
 hartrees
Energy at 0K-2650.491249
Energy at 298.15K-2650.493644
HF Energy-2650.491249
Nuclear repulsion energy124.145445
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 HSEh1PBE/TZVP
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 3493 3353 106.31      
2 Σ 2200 2112 30.49      
3 Σ 610 586 1.86      
4 Π 659 633 51.54      
4 Π 659 633 51.54      
5 Π 316 303 8.89      
5 Π 316 303 8.89      

Unscaled Zero Point Vibrational Energy (zpe) 4126.0 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 3961.4 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 HSEh1PBE/TZVP
B
0.13396

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/TZVP

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -2.307
C2 0.000 0.000 -1.107
Br3 0.000 0.000 0.682
H4 0.000 0.000 -3.371

Atom - Atom Distances (Å)
  C1 C2 Br3 H4
C11.20002.98861.0636
C21.20001.78872.2636
Br32.98861.78874.0523
H41.06362.26364.0523

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 HSEh1PBE/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.041      
2 C -0.261      
3 Br 0.035      
4 H 0.185      


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 -0.210 0.210
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.772 0.000 0.000
y 0.000 -30.772 0.000
z 0.000 0.000 -22.118
Traceless
 xyz
x -4.327 0.000 0.000
y 0.000 -4.327 0.000
z 0.000 0.000 8.654
Polar
3z2-r217.309
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 3.091 0.000 0.000
y 0.000 3.091 0.000
z 0.000 0.000 9.372


<r2> (average value of r2) Å2
<r2> 84.328
(<r2>)1/2 9.183