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All results from a given calculation for HCCBr (bromoacetylene)

using model chemistry: B2PLYP=FULLultrafine/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-2650.361244
Energy at 298.15K 
HF Energy-2650.219754
Nuclear repulsion energy122.981738
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/aug-cc-pVDZ
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 3496 3365 96.53      
2 Σ 2133 2053 26.67      
3 Σ 607 584 1.32      
4 Π 583 561 46.30      
4 Π 583 561 46.30      
5 Π 291 280 4.97      
5 Π 291 280 4.97      

Unscaled Zero Point Vibrational Energy (zpe) 3992.2 cm-1
Scaled (by 0.9623) Zero Point Vibrational Energy (zpe) 3841.7 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/aug-cc-pVDZ
B
0.13137

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

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 -1.114
Br3 0.000 0.000 0.688
H4 0.000 0.000 -3.402

Atom - Atom Distances (Å)
  C1 C2 Br3 H4
C11.21873.02051.0697
C21.21871.80182.2884
Br33.02051.80184.0902
H41.06972.28844.0902

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