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

using model chemistry: B1B95/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at B1B95/aug-cc-pVTZ
 hartrees
Energy at 0K-52.001738
Energy at 298.15K-52.004125
HF Energy-52.001738
Nuclear repulsion energy22.446130
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 B1B95/aug-cc-pVTZ
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 2570 2463 0.00      
2 A1 1189 1140 0.00      
3 A1 872 836 0.00      
4 B1 573 549 0.00      
5 B2 2549 2444 59.87      
6 B2 1123 1077 1.74      
7 E 2616 2508 77.62      
7 E 2616 2508 77.62      
8 E 977 936 24.32      
8 E 977 936 24.32      
9 E 368 353 3.23      
9 E 368 353 3.23      

Unscaled Zero Point Vibrational Energy (zpe) 8399.8 cm-1
Scaled (by 0.9585) Zero Point Vibrational Energy (zpe) 8051.2 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 B1B95/aug-cc-pVTZ
ABC
4.07347 0.67365 0.67365

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/aug-cc-pVTZ

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.000 0.811
B2 0.000 0.000 -0.811
H3 0.000 1.013 1.448
H4 0.000 -1.013 1.448
H5 1.013 0.000 -1.448
H6 -1.013 0.000 -1.448

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.62291.19671.19672.47652.4765
B21.62292.47652.47651.19671.1967
H31.19672.47652.02643.23173.2317
H41.19672.47652.02643.23173.2317
H52.47651.19673.23173.23172.0264
H62.47651.19673.23173.23172.0264

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 122.152 B1 B2 H6 122.152
B2 B1 H3 122.152 B2 B1 H4 122.152
H3 B1 H4 115.697 H5 B2 H6 115.697
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -0.017      
2 B -0.017      
3 H 0.009      
4 H 0.009      
5 H 0.009      
6 H 0.009      


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 -14.624 0.000 0.000
y 0.000 -14.624 0.000
z 0.000 0.000 -16.510
Traceless
 xyz
x 0.943 0.000 0.000
y 0.000 0.943 0.000
z 0.000 0.000 -1.886
Polar
3z2-r2-3.773
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 4.215 0.000 0.000
y 0.000 4.215 0.000
z 0.000 0.000 6.128


<r2> (average value of r2) Å2
<r2> 28.608
(<r2>)1/2 5.349