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

using model chemistry: CCSD/cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at CCSD/cc-pVQZ
 hartrees
Energy at 0K-51.903770
Energy at 298.15K-51.906247
HF Energy-51.655007
Nuclear repulsion energy22.288536
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 CCSD/cc-pVQZ
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 2591 2462 0.00      
2 A1 1233 1172 0.00      
3 A1 861 818 0.00      
4 B1 515 490 0.00      
5 B2 2570 2443 78.62      
6 B2 1170 1113 13.30      
7 E 2644 2513 92.01      
7 E 2644 2513 92.01      
8 E 1009 959 25.84      
8 E 1009 959 25.84      
9 E 428 407 6.94      
9 E 428 407 6.94      

Unscaled Zero Point Vibrational Energy (zpe) 8550.0 cm-1
Scaled (by 0.9505) Zero Point Vibrational Energy (zpe) 8126.8 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 CCSD/cc-pVQZ
ABC
4.04975 0.65901 0.65901

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

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.825
B2 0.000 0.000 -0.825
H3 0.000 1.016 1.455
H4 0.000 -1.016 1.455
H5 1.016 0.000 -1.455
H6 -1.016 0.000 -1.455

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.64911.19561.19562.49542.4954
B21.64912.49542.49541.19561.1956
H31.19562.49542.03233.24473.2447
H41.19562.49542.03233.24473.2447
H52.49541.19563.24473.24472.0323
H62.49541.19563.24473.24472.0323

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 121.800 B1 B2 H6 121.800
B2 B1 H3 121.800 B2 B1 H4 121.800
H3 B1 H4 116.400 H5 B2 H6 116.400
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability