return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: CCSD(T)/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 CCSD(T)/6-311G**
 hartrees
Energy at 0K-51.864120
Energy at 298.15K-51.866590
HF Energy-51.646225
Nuclear repulsion energy22.152231
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(T)/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 1224 1181        
2 A1 853 823        
3 B1 514 496        
4 B2 1163 1122        
5 E 2622 2529        
6 E 2622 2529        
7 E 2569 2479        
7 E 2550 2460        
8 E 1005 969        
8 E 1005 969        
9 E 428 413        
9 E 427 412        

Unscaled Zero Point Vibrational Energy (zpe) 8490.7 cm-1
Scaled (by 0.9647) Zero Point Vibrational Energy (zpe) 8190.9 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(T)/6-311G**
ABC
4.01850 0.64990 0.64990

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/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 1.020 1.465
H4 0.000 -1.020 1.465
H5 1.020 0.000 -1.465
H6 -1.020 0.000 -1.465

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.66091.20151.20152.51222.5122
B21.66092.51222.51221.20151.2015
H31.20152.51222.04023.26643.2664
H41.20152.51222.04023.26643.2664
H52.51221.20153.26643.26642.0402
H62.51221.20153.26643.26642.0402

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 121.895 B1 B2 H6 121.895
B2 B1 H3 121.895 B2 B1 H4 121.895
H3 B1 H4 116.210 H5 B2 H6 116.210
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability