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

using model chemistry: MP2/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 MP2/cc-pVDZ
 hartrees
Energy at 0K-50.552079
Energy at 298.15K-50.552149
HF Energy-50.425698
Nuclear repulsion energy15.180501
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/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 2856 2721 0.00      
2 Σg 1269 1209 0.00      
3 Σu 2814 2681 25.06      
4 Πg 579 552 0.00      
4 Πg 579 552 0.00      
5 Πu 632 602 0.84      
5 Πu 632 602 0.84      

Unscaled Zero Point Vibrational Energy (zpe) 4681.1 cm-1
Scaled (by 0.9525) Zero Point Vibrational Energy (zpe) 4458.8 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/cc-pVDZ
B
0.81885

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/cc-pVDZ

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.765
B2 0.000 0.000 -0.765
H3 0.000 0.000 1.953
H4 0.000 0.000 -1.953

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.53081.18752.7183
B21.53082.71831.1875
H31.18752.71833.9058
H42.71831.18753.9058

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