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All results from a given calculation for HCCBr (bromoacetylene)

using model chemistry: wB97X-D/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 wB97X-D/TZVP
 hartrees
Energy at 0K-2650.928199
Energy at 298.15K-2650.930609
HF Energy-2650.928199
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/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 3486 3329 100.85      
2 Σ 2220 2120 24.27      
3 Σ 609 581 1.42      
4 Π 671 641 49.39      
4 Π 671 641 49.39      
5 Π 318 303 10.49      
5 Π 318 303 10.49      

Unscaled Zero Point Vibrational Energy (zpe) 4145.9 cm-1
Scaled (by 0.955) Zero Point Vibrational Energy (zpe) 3959.3 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/TZVP
B
0.13348

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -2.310
C2 0.000 0.000 -1.113
Br3 0.000 0.000 0.683
H4 0.000 0.000 -3.373

Atom - Atom Distances (Å)
  C1 C2 Br3 H4
C11.19702.99261.0635
C21.19701.79562.2605
Br32.99261.79564.0561
H41.06352.26054.0561

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/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.019      
2 C -0.256      
3 Br 0.042      
4 H 0.194      


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 -0.282 0.282
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.728 0.000 0.000
y 0.000 -30.728 0.000
z 0.000 0.000 -21.996
Traceless
 xyz
x -4.366 0.000 0.000
y 0.000 -4.366 0.000
z 0.000 0.000 8.733
Polar
3z2-r217.465
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 3.090 0.000 0.000
y 0.000 3.090 0.000
z 0.000 0.000 9.280


<r2> (average value of r2) Å2
<r2> 84.511
(<r2>)1/2 9.193