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

using model chemistry: MP4/cc-pVDZ

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 MP4/cc-pVDZ
 hartrees
Energy at 0K-50.583947
Energy at 298.15K-50.583977
HF Energy-50.425449
Nuclear repulsion energy15.127637
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 MP4/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 Σg 2821 2728 0.00      
2 Σg 1250 1209 0.00      
3 Σu 2779 2687 0.00      
4 Πg 558 540 0.00      
4 Πg 558 540 0.00      
5 Πu 622 602 0.00      
5 Πu 622 602 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 4605.3 cm-1
Scaled (by 0.9669) Zero Point Vibrational Energy (zpe) 4452.9 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 MP4/cc-pVDZ
B
0.81324

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/cc-pVDZ

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.768
B2 0.000 0.000 -0.768
H3 0.000 0.000 1.959
H4 0.000 0.000 -1.959

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.53631.19092.7273
B21.53632.72731.1909
H31.19092.72733.9182
H42.72731.19093.9182

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