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

using model chemistry: MP3=FULL/6-31G(2df,p)

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=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-50.610573
Energy at 298.15K-50.610820
HF Energy-50.426871
Nuclear repulsion energy15.452529
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/6-31G(2df,p)
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 2908 2908 0.00      
2 Σg 1289 1289 0.00      
3 Σu 2866 2866 11.40      
4 Πg 696 696 0.00      
4 Πg 696 696 0.00      
5 Πu 686 686 1.34      
5 Πu 686 686 1.34      

Unscaled Zero Point Vibrational Energy (zpe) 4913.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4913.6 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/6-31G(2df,p)
B
0.84916

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31G(2df,p)

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.751
B2 0.000 0.000 -0.751
H3 0.000 0.000 1.920
H4 0.000 0.000 -1.920

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.50211.16902.6712
B21.50212.67121.1690
H31.16902.67123.8402
H42.67121.16903.8402

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