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All results from a given calculation for HCCBr (bromoacetylene)

using model chemistry: B2PLYP=FULLultrafine/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 B2PLYP=FULLultrafine/TZVP
 hartrees
Energy at 0K-2650.453232
Energy at 298.15K 
HF Energy-2650.261794
Nuclear repulsion energy123.484808
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 B2PLYP=FULLultrafine/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 3501 3501 95.04      
2 Σ 2149 2149 23.38      
3 Σ 596 596 1.35      
4 Π 624 624 52.17      
4 Π 624 624 52.17      
5 Π 291 291 6.10      
5 Π 291 291 6.10      

Unscaled Zero Point Vibrational Energy (zpe) 4037.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4037.8 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 B2PLYP=FULLultrafine/TZVP
B
0.13255

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/TZVP

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -2.319
C2 0.000 0.000 -1.115
Br3 0.000 0.000 0.685
H4 0.000 0.000 -3.380

Atom - Atom Distances (Å)
  C1 C2 Br3 H4
C11.20483.00471.0607
C21.20481.80002.2655
Br33.00471.80004.0655
H41.06072.26554.0655

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