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

using model chemistry: HF/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at HF/Def2TZVPP
 hartrees
Energy at 0K-51.652913
Energy at 298.15K-51.655497
HF Energy-51.652913
Nuclear repulsion energy22.165866
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 HF/Def2TZVPP
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 2655 2407 0.00      
2 A1 1309 1186 0.00      
3 A1 862 781 0.00      
4 B1 490 444 0.00      
5 B2 2631 2384 126.34      
6 B2 1251 1134 28.61      
7 E 2696 2443 141.99      
7 E 2696 2443 141.99      
8 E 1066 966 33.03      
8 E 1066 966 33.03      
9 E 486 441 11.99      
9 E 486 441 11.99      

Unscaled Zero Point Vibrational Energy (zpe) 8845.9 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 8017.9 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 HF/Def2TZVPP
ABC
4.05914 0.64620 0.64620

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.836
B2 0.000 0.000 -0.836
H3 0.000 1.015 1.463
H4 0.000 -1.015 1.463
H5 1.015 0.000 -1.463
H6 -1.015 0.000 -1.463

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.67151.19331.19332.51312.5131
B21.67152.51312.51311.19331.1933
H31.19332.51312.03003.25973.2597
H41.19332.51312.03003.25973.2597
H52.51311.19333.25973.25972.0300
H62.51311.19333.25973.25972.0300

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 121.729 B1 B2 H6 121.729
B2 B1 H3 121.729 B2 B1 H4 121.729
H3 B1 H4 116.542 H5 B2 H6 116.542
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B 0.052      
2 B 0.052      
3 H -0.026      
4 H -0.026      
5 H -0.026      
6 H -0.026      


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 -14.727 0.000 0.000
y 0.000 -14.727 0.000
z 0.000 0.000 -17.328
Traceless
 xyz
x 1.300 0.000 0.000
y 0.000 1.300 0.000
z 0.000 0.000 -2.601
Polar
3z2-r2-5.202
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 3.702 0.000 0.000
y 0.000 3.702 0.000
z 0.000 0.000 5.037


<r2> (average value of r2) Å2
<r2> 29.410
(<r2>)1/2 5.423