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All results from a given calculation for HCCBr (bromoacetylene)

using model chemistry: wB97X-D/CEP-31G

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/CEP-31G
 hartrees
Energy at 0K-25.148592
Energy at 298.15K-25.150874
HF Energy-25.148592
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/CEP-31G
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 3493 69.42      
2 Σ 2169 2169 14.92      
3 Σ 561 561 0.31      
4 Π 719 719 75.85      
4 Π 719 719 75.85      
5 Π 266 266 6.44      
5 Π 266 266 6.44      

Unscaled Zero Point Vibrational Energy (zpe) 4095.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4095.6 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/CEP-31G
B
0.12518

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/CEP-31G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -2.391
C2 0.000 0.000 -1.144
Br3 0.000 0.000 0.705
H4 0.000 0.000 -3.462

Atom - Atom Distances (Å)
  C1 C2 Br3 H4
C11.24693.09561.0713
C21.24691.84872.3182
Br33.09561.84874.1669
H41.07132.31824.1669

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/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.019      
2 C -0.637      
3 Br 0.230      
4 H 0.387      


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 -0.441 0.441
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.432 0.000 0.000
y 0.000 -27.432 0.000
z 0.000 0.000 -18.367
Traceless
 xyz
x -4.533 0.000 0.000
y 0.000 -4.533 0.000
z 0.000 0.000 9.065
Polar
3z2-r218.130
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 1.649 0.000 0.000
y 0.000 1.649 0.000
z 0.000 0.000 8.895


<r2> (average value of r2) Å2
<r2> 58.806
(<r2>)1/2 7.668