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

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

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-pVTZ
 hartrees
Energy at 0K-50.631309
Energy at 298.15K-50.631360
HF Energy-50.439131
Nuclear repulsion energy15.336203
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-pVTZ
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 2819 2734 0.00      
2 Σg 1255 1217 0.00      
3 Σu 2778 2695 0.00      
4 Πg 572 555 0.00      
4 Πg 572 555 0.00      
5 Πu 621 603 0.00      
5 Πu 621 603 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 4618.8 cm-1
Scaled (by 0.9699) Zero Point Vibrational Energy (zpe) 4479.8 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-pVTZ
B
0.83619

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

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.757
B2 0.000 0.000 -0.757
H3 0.000 0.000 1.933
H4 0.000 0.000 -1.933

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.51451.17612.6906
B21.51452.69061.1761
H31.17612.69063.8667
H42.69061.17613.8667

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