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All results from a given calculation for HCCBr (bromoacetylene)

using model chemistry: BLYP/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 BLYP/TZVP
 hartrees
Energy at 0K-2650.904323
Energy at 298.15K-2650.906516
HF Energy-2650.904323
Nuclear repulsion energy122.595325
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 BLYP/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 3408 3399 97.11      
2 Σ 2105 2100 34.10      
3 Σ 569 567 1.89      
4 Π 580 579 54.42      
4 Π 580 579 54.42      
5 Π 279 279 5.58      
5 Π 279 279 5.58      

Unscaled Zero Point Vibrational Energy (zpe) 3900.2 cm-1
Scaled (by 0.9975) Zero Point Vibrational Energy (zpe) 3890.4 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 BLYP/TZVP
B
0.13067

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -2.335
C2 0.000 0.000 -1.124
Br3 0.000 0.000 0.690
H4 0.000 0.000 -3.403

Atom - Atom Distances (Å)
  C1 C2 Br3 H4
C11.21113.02561.0675
C21.21111.81452.2786
Br33.02561.81454.0931
H41.06752.27864.0931

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 BLYP/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.028      
2 C -0.258      
3 Br 0.054      
4 H 0.175      


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 -0.064 0.064
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.014 0.000 0.000
y 0.000 -31.014 0.000
z 0.000 0.000 -22.750
Traceless
 xyz
x -4.132 0.000 0.000
y 0.000 -4.132 0.000
z 0.000 0.000 8.264
Polar
3z2-r216.529
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 3.187 0.000 0.000
y 0.000 3.187 0.000
z 0.000 0.000 9.775


<r2> (average value of r2) Å2
<r2> 86.212
(<r2>)1/2 9.285