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All results from a given calculation for HBHHBH (Diborane(4) C2V)

using model chemistry: B2PLYP/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B2PLYP/6-31G(2df,p)
 hartrees
Energy at 0K-51.965597
Energy at 298.15K-51.968524
HF Energy-51.892654
Nuclear repulsion energy24.864482
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/6-31G(2df,p)
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 2882 2752 0.28      
2 A1 2128 2033 15.43      
3 A1 1374 1312 1.89      
4 A1 1150 1098 1.92      
5 A1 753 719 0.94      
6 A2 1298 1239 0.00      
7 A2 665 635 0.00      
8 B1 2131 2035 58.17      
9 B1 818 781 2.40      
10 B2 2842 2714 25.94      
11 B2 1382 1320 198.14      
12 B2 554 529 33.82      

Unscaled Zero Point Vibrational Energy (zpe) 8988.4 cm-1
Scaled (by 0.955) Zero Point Vibrational Energy (zpe) 8584.0 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/6-31G(2df,p)
ABC
6.73540 0.84832 0.81836

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.731 -0.116
B2 0.000 -0.731 -0.116
H3 0.895 0.000 0.575
H4 -0.895 0.000 0.575
H5 0.000 1.894 0.002
H6 0.000 -1.894 0.002

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.46111.34611.34611.16972.6275
B21.46111.34611.34612.62751.1697
H31.34611.34611.79032.17202.1720
H41.34611.34611.79032.17202.1720
H51.16972.62752.17202.17203.7885
H62.62751.16972.17202.17203.7885

picture of Diborane(4) C2V state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 B2 H3 57.132 B1 B2 H4 57.132
B1 B2 H6 174.219 B1 H3 B2 65.735
B1 H4 B2 65.735 B2 B1 H3 57.132
B2 B1 H4 57.132 B2 B1 H5 174.219
H3 B1 H4 83.362 H3 B1 H5 119.226
H3 B2 H4 83.362 H3 B2 H6 119.226
H4 B1 H5 119.226 H4 B2 H6 119.226
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.174      
2 B -0.174      
3 H 0.107      
4 H 0.107      
5 H 0.067      
6 H 0.067      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.388 0.000 0.000
y 0.000 5.475 0.000
z 0.000 0.000 3.065


<r2> (average value of r2) Å2
<r2> 23.973
(<r2>)1/2 4.896