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

using model chemistry: HF/TZVP

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/TZVP
 hartrees
Energy at 0K-51.650721
Energy at 298.15K-51.653312
HF Energy-51.650721
Nuclear repulsion energy22.153571
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/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 A1 2659 2416 0.00      
2 A1 1308 1189 0.00      
3 A1 862 783 0.00      
4 B1 490 446 0.00      
5 B2 2634 2393 126.29      
6 B2 1250 1136 29.51      
7 E 2702 2455 142.45      
7 E 2702 2455 142.45      
8 E 1066 968 34.82      
8 E 1066 968 34.82      
9 E 488 443 11.31      
9 E 488 443 11.31      

Unscaled Zero Point Vibrational Energy (zpe) 8856.9 cm-1
Scaled (by 0.9086) Zero Point Vibrational Energy (zpe) 8047.4 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/TZVP
ABC
4.04846 0.64584 0.64584

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

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 1.016 1.463
H4 0.000 -1.016 1.463
H5 1.016 0.000 -1.463
H6 -1.016 0.000 -1.463

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.67191.19441.19442.51392.5139
B21.67192.51392.51391.19441.1944
H31.19442.51392.03263.26073.2607
H41.19442.51392.03263.26073.2607
H52.51391.19443.26073.26072.0326
H62.51391.19443.26073.26072.0326

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 121.691 B1 B2 H6 121.691
B2 B1 H3 121.691 B2 B1 H4 121.691
H3 B1 H4 116.619 H5 B2 H6 116.619
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B 0.109      
2 B 0.109      
3 H -0.054      
4 H -0.054      
5 H -0.054      
6 H -0.054      


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 -14.742 0.000 0.000
y 0.000 -14.742 0.000
z 0.000 0.000 -17.352
Traceless
 xyz
x 1.305 0.000 0.000
y 0.000 1.305 0.000
z 0.000 0.000 -2.610
Polar
3z2-r2-5.219
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 3.394 0.000 0.000
y 0.000 3.394 0.000
z 0.000 0.000 4.923


<r2> (average value of r2) Å2
<r2> 29.437
(<r2>)1/2 5.426