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All results from a given calculation for HCCBr (bromoacetylene)

using model chemistry: B3LYPultrafine/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 B3LYPultrafine/aug-cc-pVDZ
 hartrees
Energy at 0K-2650.886976
Energy at 298.15K-2650.889270
HF Energy-2650.886976
Nuclear repulsion energy123.118717
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 B3LYPultrafine/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 3484 3381 104.13      
2 Σ 2174 2110 32.64      
3 Σ 602 584 1.62      
4 Π 597 579 46.01      
4 Π 597 579 46.01      
5 Π 302 293 6.47      
5 Π 302 293 6.47      

Unscaled Zero Point Vibrational Energy (zpe) 4028.5 cm-1
Scaled (by 0.9704) Zero Point Vibrational Energy (zpe) 3909.3 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 B3LYPultrafine/aug-cc-pVDZ
B
0.13173

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/aug-cc-pVDZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -2.327
C2 0.000 0.000 -1.116
Br3 0.000 0.000 0.687
H4 0.000 0.000 -3.397

Atom - Atom Distances (Å)
  C1 C2 Br3 H4
C11.21183.01461.0696
C21.21181.80282.2814
Br33.01461.80284.0842
H41.06962.28144.0842

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 B3LYPultrafine/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.776      
2 C -0.572      
3 Br 0.400      
4 H -0.605      


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 -0.200 0.200
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.004 0.000 0.000
y 0.000 -31.004 0.000
z 0.000 0.000 -22.755
Traceless
 xyz
x -4.125 0.000 0.000
y 0.000 -4.125 0.000
z 0.000 0.000 8.249
Polar
3z2-r216.498
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 4.676 0.000 0.000
y 0.000 4.676 0.000
z 0.000 0.000 10.070


<r2> (average value of r2) Å2
<r2> 85.685
(<r2>)1/2 9.257