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

using model chemistry: HSEh1PBE/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at HSEh1PBE/aug-cc-pVDZ
 hartrees
Energy at 0K-51.954037
Energy at 298.15K-51.956415
HF Energy-51.954037
Nuclear repulsion energy22.239595
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 HSEh1PBE/aug-cc-pVDZ
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 2566 2469 0.00      
2 A1 1177 1133 0.00      
3 A1 871 838 0.00      
4 B1 560 539 0.00      
5 B2 2543 2447 58.55      
6 B2 1106 1064 1.57      
7 E 2621 2522 75.45      
7 E 2621 2522 75.45      
8 E 975 938 22.20      
8 E 975 938 22.20      
9 E 370 356 3.13      
9 E 370 356 3.13      

Unscaled Zero Point Vibrational Energy (zpe) 8377.4 cm-1
Scaled (by 0.9622) Zero Point Vibrational Energy (zpe) 8060.7 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 HSEh1PBE/aug-cc-pVDZ
ABC
3.98500 0.66221 0.66221

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/aug-cc-pVDZ

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 1.024 1.460
H4 0.000 -1.024 1.460
H5 1.024 0.000 -1.460
H6 -1.024 0.000 -1.460

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.63661.20901.20902.49842.4984
B21.63662.49842.49841.20901.2090
H31.20902.49842.04883.26043.2604
H41.20902.49842.04883.26043.2604
H52.49841.20903.26043.26042.0488
H62.49841.20903.26043.26042.0488

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 122.081 B1 B2 H6 122.081
B2 B1 H3 122.081 B2 B1 H4 122.081
H3 B1 H4 115.837 H5 B2 H6 115.837
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -1.178      
2 B -1.178      
3 H 0.589      
4 H 0.589      
5 H 0.589      
6 H 0.589      


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 -14.741 0.000 0.000
y 0.000 -14.741 0.000
z 0.000 0.000 -16.595
Traceless
 xyz
x 0.927 0.000 0.000
y 0.000 0.927 0.000
z 0.000 0.000 -1.855
Polar
3z2-r2-3.710
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 4.275 0.000 0.000
y 0.000 4.275 0.000
z 0.000 0.000 6.154


<r2> (average value of r2) Å2
<r2> 29.017
(<r2>)1/2 5.387