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

using model chemistry: CCSD=FULL/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=FULL/aug-cc-pVTZ
 hartrees
Energy at 0K-50.657313
Energy at 298.15K-50.657523
HF Energy-50.439368
Nuclear repulsion energy15.477733
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=FULL/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 2885 2744 0.00      
2 Σg 1307 1243 0.00      
3 Σu 2814 2676 27.84      
4 Πg 624 594 0.00      
4 Πg 624 594 0.00      
5 Πu 716 681 0.00      
5 Πu 716 681 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 4843.2 cm-1
Scaled (by 0.951) Zero Point Vibrational Energy (zpe) 4605.9 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 CCSD=FULL/aug-cc-pVTZ
B
0.85217

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

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.750
B2 0.000 0.000 -0.750
H3 0.000 0.000 1.918
H4 0.000 0.000 -1.918

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.49911.16802.6671
B21.49912.66711.1680
H31.16802.66713.8350
H42.66711.16803.8350

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