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All results from a given calculation for HCCBr (bromoacetylene)

using model chemistry: LSDA/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 LSDA/cc-pVDZ
 hartrees
Energy at 0K-2647.575389
Energy at 298.15K-2647.577667
HF Energy-2647.575389
Nuclear repulsion energy124.170990
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 LSDA/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 3421 3383 123.35      
2 Σ 2147 2123 30.69      
3 Σ 624 618 2.58      
4 Π 586 579 38.93      
4 Π 586 579 38.93      
5 Π 298 295 4.65      
5 Π 298 295 4.65      

Unscaled Zero Point Vibrational Energy (zpe) 3979.7 cm-1
Scaled (by 0.989) Zero Point Vibrational Energy (zpe) 3935.9 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 LSDA/cc-pVDZ
B
0.13380

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -2.314
C2 0.000 0.000 -1.095
Br3 0.000 0.000 0.681
H4 0.000 0.000 -3.395

Atom - Atom Distances (Å)
  C1 C2 Br3 H4
C11.21882.99481.0811
C21.21881.77602.2999
Br32.99481.77604.0759
H41.08112.29994.0759

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 LSDA/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.153      
2 C 0.063      
3 Br 0.049      
4 H 0.042      


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 -0.038 0.038
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.296 0.000 0.000
y 0.000 -30.296 0.000
z 0.000 0.000 -21.990
Traceless
 xyz
x -4.153 0.000 0.000
y 0.000 -4.153 0.000
z 0.000 0.000 8.306
Polar
3z2-r216.612
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 2.511 0.000 0.000
y 0.000 2.511 0.000
z 0.000 0.000 8.999


<r2> (average value of r2) Å2
<r2> 84.266
(<r2>)1/2 9.180