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All results from a given calculation for HCCBr (bromoacetylene)

using model chemistry: wB97X-D/SDD

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 wB97X-D/SDD
 hartrees
Energy at 0K-90.048754
Energy at 298.15K-90.051123
HF Energy-90.048754
Nuclear repulsion energy 
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 wB97X-D/SDD
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 3514 3514 82.96      
2 Σ 2190 2190 19.86      
3 Σ 562 562 0.75      
4 Π 702 702 64.03      
4 Π 702 702 64.03      
5 Π 307 307 13.04      
5 Π 307 307 13.04      

Unscaled Zero Point Vibrational Energy (zpe) 4141.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4141.4 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 wB97X-D/SDD
B
0.12864

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/SDD

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -2.353
C2 0.000 0.000 -1.137
Br3 0.000 0.000 0.696
H4 0.000 0.000 -3.419

Atom - Atom Distances (Å)
  C1 C2 Br3 H4
C11.21613.04871.0664
C21.21611.83262.2825
Br33.04871.83264.1151
H41.06642.28254.1151

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 wB97X-D/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.236      
2 C -0.183      
3 Br 0.144      
4 H 0.276      


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 -0.463 0.463
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.448 0.000 0.000
y 0.000 -27.448 0.000
z 0.000 0.000 -18.244
Traceless
 xyz
x -4.602 0.000 0.000
y 0.000 -4.602 0.000
z 0.000 0.000 9.204
Polar
3z2-r218.407
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 1.661 0.000 0.000
y 0.000 1.661 0.000
z 0.000 0.000 8.635


<r2> (average value of r2) Å2
<r2> 71.275
(<r2>)1/2 8.442