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

using model chemistry: MP4=FULL/aug-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 MP4=FULL/aug-cc-pVTZ
 hartrees
Energy at 0K-51.931816
Energy at 298.15K-51.934289
HF Energy-51.651722
Nuclear repulsion energy22.393134
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 MP4=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 A1 870 843        
2 B1 543 526        
3 E 2656 2575        
4 E 2656 2575        
5 E 2601 2521        
6 E 2583 2503        
7 E 1227 1189        
7 E 1171 1135        
8 E 1005 974        
8 E 1005 974        
9 E 412 400        
9 E 412 400        

Unscaled Zero Point Vibrational Energy (zpe) 8570.8 cm-1
Scaled (by 0.9693) Zero Point Vibrational Energy (zpe) 8307.6 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 MP4=FULL/aug-cc-pVTZ
ABC
4.09007 0.66575 0.66575

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/aug-cc-pVTZ

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.820
B2 0.000 0.000 -0.820
H3 0.000 1.011 1.449
H4 0.000 -1.011 1.449
H5 1.011 0.000 -1.449
H6 -1.011 0.000 -1.449

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.63931.19111.19112.48412.4841
B21.63932.48412.48411.19111.1911
H31.19112.48412.02233.23213.2321
H41.19112.48412.02233.23213.2321
H52.48411.19113.23213.23212.0223
H62.48411.19113.23213.23212.0223

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 121.910 B1 B2 H6 121.910
B2 B1 H3 121.910 B2 B1 H4 121.910
H3 B1 H4 116.181 H5 B2 H6 116.181
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability