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All results from a given calculation for HCCBr (bromoacetylene)

using model chemistry: wB97X-D/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-2650.884209
Energy at 298.15K-2650.886574
HF Energy-2650.884209
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/aug-cc-pVDZ
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 3499 3349 94.84      
2 Σ 2219 2124 27.57      
3 Σ 620 594 1.38      
4 Π 620 593 46.09      
4 Π 620 593 46.09      
5 Π 316 303 8.22      
5 Π 316 303 8.22      

Unscaled Zero Point Vibrational Energy (zpe) 4104.9 cm-1
Scaled (by 0.9573) Zero Point Vibrational Energy (zpe) 3929.7 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/aug-cc-pVDZ
B
0.13260

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -2.319
C2 0.000 0.000 -1.111
Br3 0.000 0.000 0.685
H4 0.000 0.000 -3.390

Atom - Atom Distances (Å)
  C1 C2 Br3 H4
C11.20793.00441.0701
C21.20791.79652.2781
Br33.00441.79654.0746
H41.07012.27814.0746

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/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.583      
2 C -0.529      
3 Br 0.381      
4 H -0.435      


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 -0.301 0.301
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.891 0.000 0.000
y 0.000 -30.891 0.000
z 0.000 0.000 -22.108
Traceless
 xyz
x -4.391 0.000 0.000
y 0.000 -4.391 0.000
z 0.000 0.000 8.783
Polar
3z2-r217.566
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 4.690 0.000 0.000
y 0.000 4.690 0.000
z 0.000 0.000 9.840


<r2> (average value of r2) Å2
<r2> 85.068
(<r2>)1/2 9.223