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

using model chemistry: QCISD(T)=FULL/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at QCISD(T)=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-51.856780
Energy at 298.15K-51.859212
HF Energy-51.637917
Nuclear repulsion energy21.985716
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 QCISD(T)=FULL/aug-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 A1 852 827        
2 B1 503 488        
3 E 2617 2539        
4 E 2617 2539        
5 E 2565 2488        
6 E 2545 2469        
7 E 1211 1175        
7 E 1147 1112        
8 E 992 962        
8 E 992 962        
9 E 413 400        
9 E 412 400        

Unscaled Zero Point Vibrational Energy (zpe) 8432.3 cm-1
Scaled (by 0.9701) Zero Point Vibrational Energy (zpe) 8180.2 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 QCISD(T)=FULL/aug-cc-pVDZ
ABC
3.95252 0.64072 0.64072

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/aug-cc-pVDZ

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.836
B2 0.000 0.000 -0.836
H3 0.000 1.029 1.476
H4 0.000 -1.029 1.476
H5 1.029 0.000 -1.476
H6 -1.029 0.000 -1.476

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.67221.21151.21152.53082.5308
B21.67222.53082.53081.21151.2115
H31.21152.53082.05723.29143.2914
H41.21152.53082.05723.29143.2914
H52.53081.21153.29143.29142.0572
H62.53081.21153.29143.29142.0572

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 121.896 B1 B2 H6 121.896
B2 B1 H3 121.896 B2 B1 H4 121.896
H3 B1 H4 116.208 H5 B2 H6 116.208
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability