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All results from a given calculation for HCCBr (bromoacetylene)

using model chemistry: MP3/6-31+G**

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 MP3/6-31+G**
 hartrees
Energy at 0K-2646.524755
Energy at 298.15K-2646.527454
HF Energy-2646.144196
Nuclear repulsion energy123.599283
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 MP3/6-31+G**
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 3560 3313 85.58      
2 Σ 2240 2084 19.76      
3 Σ 611 568 1.10      
4 Π 689 641 51.10      
4 Π 689 641 51.10      
5 Π 457 425 11.10      
5 Π 457 425 11.10      

Unscaled Zero Point Vibrational Energy (zpe) 4350.9 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 4048.5 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 MP3/6-31+G**
B
0.13276

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31+G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -2.319
C2 0.000 0.000 -1.112
Br3 0.000 0.000 0.685
H4 0.000 0.000 -3.380

Atom - Atom Distances (Å)
  C1 C2 Br3 H4
C11.20693.00321.0615
C21.20691.79632.2684
Br33.00321.79634.0647
H41.06152.26844.0647

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