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 HBBH (Diborane(2))

using model chemistry: B2PLYP=FULL/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D*H 3ΣG
Energy calculated at B2PLYP=FULL/aug-cc-pVTZ
 hartrees
Energy at 0K-50.729091
Energy at 298.15K-50.729206
HF Energy-50.667138
Nuclear repulsion energy15.452049
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 B2PLYP=FULL/aug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σg 2866 2750 0.00      
2 Σg 1278 1226 0.00      
3 Σu 2819 2705 26.52      
4 Πg 603 578 0.00      
4 Πg 603 578 0.00      
5 Πu 644 618 0.09      
5 Πu 644 618 0.09      

Unscaled Zero Point Vibrational Energy (zpe) 4728.1 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 4536.1 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 B2PLYP=FULL/aug-cc-pVTZ
B
0.84887

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/aug-cc-pVTZ

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.751
B2 0.000 0.000 -0.751
H3 0.000 0.000 1.920
H4 0.000 0.000 -1.920

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.50281.16822.6710
B21.50282.67101.1682
H31.16822.67103.8393
H42.67101.16823.8393

picture of Diborane(2) state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 B2 H4 180.000 B2 B1 H3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability