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

using model chemistry: M06-2X/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at M06-2X/3-21G*
 hartrees
Energy at 0K-51.704694
Energy at 298.15K-51.707132
HF Energy-51.704694
Nuclear repulsion energy22.367656
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 M06-2X/3-21G*
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 2680 2539 0.00      
2 A1 1232 1167 0.00      
3 A1 900 853 0.00      
4 B1 535 507 0.00      
5 B2 2660 2519 58.17      
6 B2 1177 1115 5.09      
7 E 2725 2581 59.03      
7 E 2725 2581 59.03      
8 E 998 945 29.93      
8 E 998 945 29.93      
9 E 402 381 0.77      
9 E 402 381 0.77      

Unscaled Zero Point Vibrational Energy (zpe) 8716.5 cm-1
Scaled (by 0.9472) Zero Point Vibrational Energy (zpe) 8256.3 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 M06-2X/3-21G*
ABC
4.05790 0.66646 0.66646

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/3-21G*

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.818
B2 0.000 0.000 -0.818
H3 0.000 1.015 1.451
H4 0.000 -1.015 1.451
H5 1.015 0.000 -1.451
H6 -1.015 0.000 -1.451

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.63601.19621.19622.48552.4855
B21.63602.48552.48551.19621.1962
H31.19622.48552.03033.23723.2372
H41.19622.48552.03033.23723.2372
H52.48551.19623.23723.23722.0303
H62.48551.19623.23723.23722.0303

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 121.934 B1 B2 H6 121.934
B2 B1 H3 121.934 B2 B1 H4 121.934
H3 B1 H4 116.132 H5 B2 H6 116.132
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.078      
2 B -0.078      
3 H 0.039      
4 H 0.039      
5 H 0.039      
6 H 0.039      


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 -14.773 0.000 0.000
y 0.000 -14.773 0.000
z 0.000 0.000 -16.353
Traceless
 xyz
x 0.790 0.000 0.000
y 0.000 0.790 0.000
z 0.000 0.000 -1.580
Polar
3z2-r2-3.160
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 3.011 0.000 0.000
y 0.000 3.011 0.000
z 0.000 0.000 4.928


<r2> (average value of r2) Å2
<r2> 28.788
(<r2>)1/2 5.365