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All results from a given calculation for HCCBr (bromoacetylene)

using model chemistry: B2PLYP=FULLultrafine/STO-3G

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/STO-3G
 hartrees
Energy at 0K-2621.340117
Energy at 298.15K 
HF Energy-2621.283060
Nuclear repulsion energy122.611899
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/STO-3G
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 3714 3714 162.03      
2 Σ 2337 2337 2.02      
3 Σ 631 631 1.93      
4 Π 732 732 15.06      
4 Π 732 732 15.06      
5 Π 330 330 0.46      
5 Π 330 330 0.46      

Unscaled Zero Point Vibrational Energy (zpe) 4403.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4403.2 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/STO-3G
B
0.13074

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/STO-3G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -2.333
C2 0.000 0.000 -1.124
Br3 0.000 0.000 0.690
H4 0.000 0.000 -3.412

Atom - Atom Distances (Å)
  C1 C2 Br3 H4
C11.20933.02341.0786
C21.20931.81412.2879
Br33.02341.81414.1021
H41.07862.28794.1021

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