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All results from a given calculation for HCCBr (bromoacetylene)

using model chemistry: B2PLYP=FULL/6-311G**

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=FULL/6-311G**
 hartrees
Energy at 0K-2650.474576
Energy at 298.15K-2650.476836
HF Energy-2650.215672
Nuclear repulsion energy123.533100
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=FULL/6-311G**
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 3499 3499 90.42      
2 Σ 2140 2140 19.60      
3 Σ 605 605 1.26      
4 Π 623 623 45.36      
4 Π 623 623 45.36      
5 Π 277 277 4.09      
5 Π 277 277 4.09      

Unscaled Zero Point Vibrational Energy (zpe) 4022.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4022.0 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=FULL/6-311G**
B
0.13262

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-311G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -2.320
C2 0.000 0.000 -1.113
Br3 0.000 0.000 0.685
H4 0.000 0.000 -3.381

Atom - Atom Distances (Å)
  C1 C2 Br3 H4
C11.20693.00461.0617
C21.20691.79772.2686
Br33.00461.79774.0663
H41.06172.26864.0663

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