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All results from a given calculation for HCCBr (bromoacetylene)

using model chemistry: MP3=FULL/6-311+G(3df,2p)

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 MP3=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-2649.549521
Energy at 298.15K-2649.551964
HF Energy-2648.630376
Nuclear repulsion energy124.290882
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 MP3=FULL/6-311+G(3df,2p)
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 3523 3523 90.89      
2 Σ 2222 2222 20.69      
3 Σ 624 624 0.75      
4 Π 686 686 41.81      
4 Π 686 686 41.81      
5 Π 322 322 7.69      
5 Π 322 322 7.69      

Unscaled Zero Point Vibrational Energy (zpe) 4192.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4192.2 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 MP3=FULL/6-311+G(3df,2p)
B
0.13430

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-311+G(3df,2p)

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -2.304
C2 0.000 0.000 -1.107
Br3 0.000 0.000 0.681
H4 0.000 0.000 -3.364

Atom - Atom Distances (Å)
  C1 C2 Br3 H4
C11.19682.98461.0599
C21.19681.78782.2567
Br32.98461.78784.0445
H41.05992.25674.0445

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