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All results from a given calculation for HCCBr (bromoacetylene)

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/aug-cc-pVDZ
 hartrees
Energy at 0K-2650.373933
Energy at 298.15K-2650.376095
HF Energy-2650.373933
Nuclear repulsion energy122.996202
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 PBEPBEultrafine/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 3419 3398 102.47      
2 Σ 2111 2098 39.39      
3 Σ 602 599 2.27      
4 Π 534 531 48.13      
4 Π 534 531 48.13      
5 Π 282 280 4.11      
5 Π 282 280 4.11      

Unscaled Zero Point Vibrational Energy (zpe) 3881.8 cm-1
Scaled (by 0.9939) Zero Point Vibrational Energy (zpe) 3858.1 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 PBEPBEultrafine/aug-cc-pVDZ
B
0.13135

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -2.334
C2 0.000 0.000 -1.110
Br3 0.000 0.000 0.688
H4 0.000 0.000 -3.410

Atom - Atom Distances (Å)
  C1 C2 Br3 H4
C11.22323.02151.0768
C21.22321.79832.3000
Br33.02151.79834.0983
H41.07682.30004.0983

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 PBEPBEultrafine/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.661      
2 C -0.498      
3 Br 0.375      
4 H -0.538      


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 -0.086 0.086
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.966 0.000 0.000
y 0.000 -30.966 0.000
z 0.000 0.000 -22.779
Traceless
 xyz
x -4.094 0.000 0.000
y 0.000 -4.094 0.000
z 0.000 0.000 8.187
Polar
3z2-r216.374
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 4.775 0.000 0.000
y 0.000 4.775 0.000
z 0.000 0.000 10.408


<r2> (average value of r2) Å2
<r2> 85.902
(<r2>)1/2 9.268