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All results from a given calculation for HBBH (Diborane(2))

using model chemistry: MP3/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D*H 3ΣG
Energy calculated at MP3/TZVP
 hartrees
Energy at 0K-50.595325
Energy at 298.15K-50.595267
HF Energy-50.437514
Nuclear repulsion energy15.381821
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/TZVP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σg 2879 2692 0.00      
2 Σg 1279 1197 0.00      
3 Σu 2839 2655 23.37      
4 Πg 501 469 0.00      
4 Πg 501 469 0.00      
5 Πu 612 572 0.09      
5 Πu 612 572 0.09      

Unscaled Zero Point Vibrational Energy (zpe) 4611.5 cm-1
Scaled (by 0.9352) Zero Point Vibrational Energy (zpe) 4312.7 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 MP3/TZVP
B
0.84098

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/TZVP

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.755
B2 0.000 0.000 -0.755
H3 0.000 0.000 1.928
H4 0.000 0.000 -1.928

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.51011.17292.6830
B21.51012.68301.1729
H31.17292.68303.8559
H42.68301.17293.8559

picture of Diborane(2) state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 B2 H4 180.000 B2 B1 H3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability