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All results from a given calculation for HBHHBH (Diborane(4) C2V)

using model chemistry: PBEPBEultrafine/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBEultrafine/aug-cc-pVDZ
 hartrees
Energy at 0K-51.934525
Energy at 298.15K-51.937361
HF Energy-51.934525
Nuclear repulsion energy24.471263
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 PBEPBEultrafine/aug-cc-pVDZ
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 2773 2756 0.12      
2 A1 2048 2036 15.61      
3 A1 1330 1322 2.50      
4 A1 1071 1065 1.25      
5 A1 701 696 5.59      
6 A2 1226 1218 0.00      
7 A2 646 642 0.00      
8 B1 2063 2050 34.71      
9 B1 766 761 0.62      
10 B2 2731 2714 26.59      
11 B2 1284 1276 159.80      
12 B2 516 513 26.13      

Unscaled Zero Point Vibrational Energy (zpe) 8577.2 cm-1
Scaled (by 0.9939) Zero Point Vibrational Energy (zpe) 8524.9 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 PBEPBEultrafine/aug-cc-pVDZ
ABC
6.48468 0.82251 0.79431

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
B1 0.000 0.742 -0.120
B2 0.000 -0.742 -0.120
H3 0.908 0.000 0.588
H4 -0.908 0.000 0.588
H5 0.000 1.923 0.013
H6 0.000 -1.923 0.013

Atom - Atom Distances (Å)
  B1 B2 H3 H4 H5 H6
B11.48311.36991.36991.18872.6676
B21.48311.36991.36992.66761.1887
H31.36991.36991.81702.20292.2029
H41.36991.36991.81702.20292.2029
H51.18872.66762.20292.20293.8455
H62.66761.18872.20292.20293.8455

picture of Diborane(4) C2V state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
B1 B2 H3 57.227 B1 B2 H4 57.227
B1 B2 H6 173.567 B1 H3 B2 65.546
B1 H4 B2 65.546 B2 B1 H3 57.227
B2 B1 H4 57.227 B2 B1 H5 173.567
H3 B1 H4 83.086 H3 B1 H5 118.685
H3 B2 H4 83.086 H3 B2 H6 118.685
H4 B1 H5 118.685 H4 B2 H6 118.685
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 B -1.227      
2 B -1.227      
3 H 0.642      
4 H 0.642      
5 H 0.585      
6 H 0.585      


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 0.828 0.828
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.273 0.000 0.000
y 0.000 -14.281 0.000
z 0.000 0.000 -16.774
Traceless
 xyz
x 1.254 0.000 0.000
y 0.000 1.243 0.000
z 0.000 0.000 -2.497
Polar
3z2-r2-4.994
x2-y20.007
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.497 0.000 0.000
y 0.000 6.428 0.000
z 0.000 0.000 4.904


<r2> (average value of r2) Å2
<r2> 24.816
(<r2>)1/2 4.982