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

using model chemistry: MP2=FULL/Def2TZVPP

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 MP2=FULL/Def2TZVPP
 hartrees
Energy at 0K-50.629107
Energy at 298.15K-50.629222
HF Energy-50.440082
Nuclear repulsion energy15.432605
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 MP2=FULL/Def2TZVPP
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 2879 2879 0.00      
2 Σg 1276 1276 0.00      
3 Σu 2837 2837 21.72      
4 Πg 615 615 0.00      
4 Πg 615 615 0.00      
5 Πu 636 636 0.08      
5 Πu 636 636 0.08      

Unscaled Zero Point Vibrational Energy (zpe) 4746.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4746.8 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 MP2=FULL/Def2TZVPP
B
0.84618

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/Def2TZVPP

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.753
B2 0.000 0.000 -0.753
H3 0.000 0.000 1.921
H4 0.000 0.000 -1.921

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.50601.16782.6738
B21.50602.67381.1678
H31.16782.67383.8416
H42.67381.16783.8416

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