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All results from a given calculation for HBBH (Diborane(2))

using model chemistry: ROHF/TZVP

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 ROHF/TZVP
 hartrees
Energy at 0K-50.434143
Energy at 298.15K-50.434312
HF Energy-50.434143
Nuclear repulsion energy15.475832
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 ROHF/TZVP
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 2923 2923 0.00      
2 Σg 1334 1334 0.00      
3 Σu 2884 2884 38.50      
4 Πg 623 623 0.00      
4 Πg 623 623 0.00      
5 Πu 674 674 0.31      
5 Πu 674 674 0.31      

Unscaled Zero Point Vibrational Energy (zpe) 4866.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4866.8 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 ROHF/TZVP
B
0.85229

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROHF/TZVP

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.749
B2 0.000 0.000 -0.749
H3 0.000 0.000 1.919
H4 0.000 0.000 -1.919

Atom - Atom Distances (Å)
  B1 B2 H3 H4
B11.49851.16932.6677
B21.49852.66771.1693
H31.16932.66773.8370
H42.66771.16933.8370

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
Charges from optimized geometry at ROHF/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.012      
2 B -0.012      
3 H 0.012      
4 H 0.012      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.304 0.000 0.000
y 0.000 -14.304 0.000
z 0.000 0.000 -12.837
Traceless
 xyz
x -0.733 0.000 0.000
y 0.000 -0.733 0.000
z 0.000 0.000 1.466
Polar
3z2-r22.933
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 21.604
(<r2>)1/2 4.648