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All results from a given calculation for B2H4 (Diborane(4) D2d)

using model chemistry: MP3/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at MP3/cc-pVTZ
 hartrees
Energy at 0K-51.885755
Energy at 298.15K-51.888245
HF Energy-51.651775
Nuclear repulsion energy22.267572
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 MP3/cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 2610 2466 0.00      
2 A1 1239 1170 0.00      
3 A1 860 813 0.00      
4 B1 519 490 0.00      
5 B2 2590 2447 80.12      
6 B2 1178 1113 14.48      
7 E 2667 2519 90.06      
7 E 2667 2519 90.06      
8 E 1014 958 27.36      
8 E 1014 958 27.36      
9 E 430 406 6.81      
9 E 430 406 6.81      

Unscaled Zero Point Vibrational Energy (zpe) 8608.4 cm-1
Scaled (by 0.9447) Zero Point Vibrational Energy (zpe) 8132.4 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 MP3/cc-pVTZ
ABC
4.05573 0.65644 0.65644

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/cc-pVTZ

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.827
B2 0.000 0.000 -0.827
H3 0.000 1.015 1.456
H4 0.000 -1.015 1.456
H5 1.015 0.000 -1.456
H6 -1.015 0.000 -1.456

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.65371.19471.19472.49872.4987
B21.65372.49872.49871.19471.1947
H31.19472.49872.03083.24733.2473
H41.19472.49872.03083.24733.2473
H52.49871.19473.24733.24732.0308
H62.49871.19473.24733.24732.0308

picture of Diborane(4) D2d state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 B2 H5 121.795 B1 B2 H6 121.795
B2 B1 H3 121.795 B2 B1 H4 121.795
H3 B1 H4 116.410 H5 B2 H6 116.410
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability