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

using model chemistry: LSDA/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at LSDA/6-311G**
 hartrees
Energy at 0K-51.676621
Energy at 298.15K-51.678743
HF Energy-51.676621
Nuclear repulsion energy22.544674
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 LSDA/6-311G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 2507 2476 0.00      
2 A1 1123 1109 0.00      
3 A1 882 871 0.00      
4 B1 621 613 0.00      
5 B2 2486 2455 19.34      
6 B2 1027 1015 6.00      
7 E 2557 2526 37.29      
7 E 2557 2526 37.29      
8 E 920 908 16.79      
8 E 920 908 16.79      
9 E 263 260 0.00      
9 E 263 260 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 8062.8 cm-1
Scaled (by 0.9877) Zero Point Vibrational Energy (zpe) 7963.6 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 LSDA/6-311G**
ABC
4.02924 0.68926 0.68926

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/6-311G**

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.796
B2 0.000 0.000 -0.796
H3 0.000 1.019 1.446
H4 0.000 -1.019 1.446
H5 1.019 0.000 -1.446
H6 -1.019 0.000 -1.446

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.59141.20841.20842.46202.4620
B21.59142.46202.46201.20841.2084
H31.20842.46202.03753.23043.2304
H41.20842.46202.03753.23043.2304
H52.46201.20843.23043.23042.0375
H62.46201.20843.23043.23042.0375

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 122.539 B1 B2 H6 122.539
B2 B1 H3 122.539 B2 B1 H4 122.539
H3 B1 H4 114.922 H5 B2 H6 114.922
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.112      
2 B -0.112      
3 H 0.056      
4 H 0.056      
5 H 0.056      
6 H 0.056      


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 -14.804 0.000 0.000
y 0.000 -14.804 0.000
z 0.000 0.000 -16.120
Traceless
 xyz
x 0.658 0.000 0.000
y 0.000 0.658 0.000
z 0.000 0.000 -1.316
Polar
3z2-r2-2.633
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 3.881 0.000 0.000
y 0.000 3.881 0.000
z 0.000 0.000 6.594


<r2> (average value of r2) Å2
<r2> 28.363
(<r2>)1/2 5.326