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All results from a given calculation for HCCBr (bromoacetylene)

using model chemistry: B2PLYP=FULL/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-2650.512686
Energy at 298.15K-2650.515079
HF Energy-2650.314580
Nuclear repulsion energy123.981218
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/cc-pVTZ
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 3497 3342 92.49      
2 Σ 2145 2050 22.11      
3 Σ 609 582 1.12      
4 Π 650 622 43.86      
4 Π 650 622 43.86      
5 Π 318 304 6.40      
5 Π 318 304 6.40      

Unscaled Zero Point Vibrational Energy (zpe) 4093.1 cm-1
Scaled (by 0.9558) Zero Point Vibrational Energy (zpe) 3912.2 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=FULL/cc-pVTZ
B
0.13357

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/cc-pVTZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -2.312
C2 0.000 0.000 -1.108
Br3 0.000 0.000 0.683
H4 0.000 0.000 -3.370

Atom - Atom Distances (Å)
  C1 C2 Br3 H4
C11.20342.99401.0584
C21.20341.79062.2619
Br32.99401.79064.0525
H41.05842.26194.0525

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