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All results from a given calculation for HCCBr (bromoacetylene)

using model chemistry: MP3=FULL/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 MP3=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-2649.051325
Energy at 298.15K-2649.053596
HF Energy-2648.622180
Nuclear repulsion energy122.833947
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/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 3514 3514 87.50      
2 Σ 2205 2205 22.04      
3 Σ 614 614 0.91      
4 Π 597 597 45.49      
4 Π 597 597 45.49      
5 Π 290 290 4.60      
5 Π 290 290 4.60      

Unscaled Zero Point Vibrational Energy (zpe) 4053.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4053.4 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/aug-cc-pVDZ
B
0.13109

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/aug-cc-pVDZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -2.334
C2 0.000 0.000 -1.117
Br3 0.000 0.000 0.689
H4 0.000 0.000 -3.406

Atom - Atom Distances (Å)
  C1 C2 Br3 H4
C11.21693.02261.0720
C21.21691.80572.2890
Br33.02261.80574.0947
H41.07202.28904.0947

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