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

using model chemistry: CCSD(T)=FULL/aug-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 CCSD(T)=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-50.595651
Energy at 298.15K-50.595643
HF Energy-50.426770
Nuclear repulsion energy15.136979
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)=FULL/aug-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 2800 2719 0.00      
2 Σg 1238 1203 0.00      
3 Σu 2757 2678 0.00      
4 Πg 531 515 0.00      
4 Πg 531 515 0.00      
5 Πu 618 600 0.00      
5 Πu 618 600 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 4546.2 cm-1
Scaled (by 0.9712) Zero Point Vibrational Energy (zpe) 4415.3 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)=FULL/aug-cc-pVDZ
B
0.81385

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/aug-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 1.957
H4 0.000 0.000 -1.957

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.53641.18882.7252
B21.53642.72521.1888
H31.18882.72523.9140
H42.72521.18883.9140

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