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 B2H6 (Diborane)

using model chemistry: CCSD(T)=FULL/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at CCSD(T)=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-53.179671
Energy at 298.15K-53.185594
HF Energy-52.833365
Nuclear repulsion energy32.204957
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)=FULL/6-311+G(3df,2p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 2631 2631        
2 Ag 2199 2199        
3 Ag 1206 1206        
4 Ag 825 825        
5 Au 857 857        
6 B1g 2709 2709        
7 B1g 938 938        
8 B1u 2027 2027        
9 B1u 996 996        
10 B2g 1905 1905        
11 B2g 900 900        
12 B2u 2722 2722        
13 B2u 971 971        
14 B2u 369 369        
15 B3g 1058 1058        
16 B3u 2616 2616        
17 B3u 1758 1758        
18 B3u 1197 1197        

Unscaled Zero Point Vibrational Energy (zpe) 13940.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13940.6 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 CCSD(T)=FULL/6-311+G(3df,2p)
ABC
2.69022 0.61648 0.56618

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/6-311+G(3df,2p)

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.877 0.000 0.000
B2 -0.877 0.000 0.000
H3 0.000 0.000 0.976
H4 0.000 0.000 -0.976
H5 1.451 1.038 0.000
H6 1.451 -1.038 0.000
H7 -1.451 1.038 0.000
H8 -1.451 -1.038 0.000

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6 H7 H8
B11.75411.31191.31191.18661.18662.54932.5493
B21.75411.31191.31192.54932.54931.18661.1866
H31.31191.31191.95132.03372.03372.03372.0337
H41.31191.31191.95132.03372.03372.03372.0337
H51.18662.54932.03372.03372.07702.90233.5689
H61.18662.54932.03372.03372.07703.56892.9023
H72.54931.18662.03372.03372.90233.56892.0770
H82.54931.18662.03372.03373.56892.90232.0770

picture of Diborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 H3 B2 83.909 B1 H4 B2 83.909
H3 B1 H4 96.091 H3 B1 H5 108.871
H3 B1 H6 108.871 H3 B2 H4 96.091
H3 B2 H7 108.871 H3 B2 H8 108.871
H4 B1 H5 108.871 H4 B1 H6 108.871
H4 B2 H7 108.871 H4 B2 H8 108.871
H5 B1 H6 122.133 H7 B2 H8 122.133
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability