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

using model chemistry: CCSD(T)/aug-cc-pVQZ

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 CCSD(T)/aug-cc-pVQZ
 hartrees
Energy at 0K-50.641377
Energy at 298.15K-50.641427
HF Energy-50.441889
Nuclear repulsion energy15.366460
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 CCSD(T)/aug-cc-pVQZ
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 2820 2711 0.00      
2 Σg 1256 1208 0.00      
3 Σu 2781 2674 0.00      
4 Πg 578 556 0.00      
4 Πg 578 556 0.00      
5 Πu 615 592 0.00      
5 Πu 615 592 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 4621.8 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 4443.4 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 CCSD(T)/aug-cc-pVQZ
B
0.83973

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/aug-cc-pVQZ

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 1.930
H4 0.000 0.000 -1.930

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.51091.17462.6855
B21.51092.68551.1746
H31.17462.68553.8601
H42.68551.17463.8601

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