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

using model chemistry: MP4=FULL/6-311G**

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/6-311G**
 hartrees
Energy at 0K-51.898935
Energy at 298.15K-51.901412
HF Energy-51.646247
Nuclear repulsion energy22.175344
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/6-311G**
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 1227 1179        
2 A1 856 823        
3 B1 519 499        
4 B2 1166 1121        
5 E 2637 2535        
6 E 2637 2535        
7 E 2582 2482        
7 E 2563 2464        
8 E 1008 970        
8 E 1008 970        
9 E 428 412        
9 E 427 411        

Unscaled Zero Point Vibrational Energy (zpe) 8528.1 cm-1
Scaled (by 0.9615) Zero Point Vibrational Energy (zpe) 8199.8 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 MP4=FULL/6-311G**
ABC
4.02624 0.65115 0.65115

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/6-311G**

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.830
B2 0.000 0.000 -0.830
H3 0.000 1.019 1.463
H4 0.000 -1.019 1.463
H5 1.019 0.000 -1.463
H6 -1.019 0.000 -1.463

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.65971.20001.20002.50952.5095
B21.65972.50952.50951.20001.2000
H31.20002.50952.03823.26243.2624
H41.20002.50952.03823.26243.2624
H52.50951.20003.26243.26242.0382
H62.50951.20003.26243.26242.0382

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 121.868 B1 B2 H6 121.868
B2 B1 H3 121.868 B2 B1 H4 121.868
H3 B1 H4 116.265 H5 B2 H6 116.265
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability