| Orbital Models
These Orbital models, designed by Dr. A.H. Norbury, of the Loughborough University of Technology, demonstrate the angular distribution of the s, p, d, and f orbitals. They may be used to illustrate a number of aspects of Molecular Orbital Theory and Crystal Field Theory. Being presented in three dimensions they are much easier to understand than two dimensional drawings. |
 |
| The models which are 27cm high, are moulded in tough polystyrene mounted
on stainless steel axes. Red is used for the positive lobes and yellow for
the negative lobes. The effect of point charges can be shown by small
white balls, mounted on the ends of the axes to illustrate octahedral
geometry, or on separate frames for tetrahedral geometry. Loose p orbitals
and sp hybrid orbitals are also supplied to slip onto the axes for
demonstrating the forms of various molecular orbitals.
The complete set consists of sixteen models of orbitals: one s, three p, five d, and seven f together with twenty-two sp hybrid orbitals (thirteen with large positive lobes and nine with negative) and twenty loose p orbitals. Also included are nine subsidiary frames to illustrate tetrahedral geometry and sixty small white balls for showing the effect of point charges. Smaller sets are also available and individual models may be purchased separately. |
Sets
| Catalogue Number | Sets | Price |
| Orb 1 | Complete set comprising 1 s, 3 p, 5 d and 7 f orbitals, 22 sp hybrid orbitals (13 large positive lobes and 9 with negatives), 20 loose p orbitals, 9 tetrahedral frames and 60 white balls for field point charges | £ 1249.86 |
| Orb 2 | Part set comprising all s, p and d orbitals, 10 sp hybrid orbitals (6 with large positive lobes and 4 with negative) 10 loose p orbitals, 6 tetrahedral frames and 30 white balls for field point charges | £ 624.12 |
| Orb 2 | Part set comprising 1s, 1 p and 3 d orbitals 10 sp hybrid orbitals (6 with large positive lobes and 4 with negative) 10 loose p orbitals, 6 tetrahedral frames and 30 white balls for field point charges. | £ 495.00 |
Individual Models
| Catalogue Number | Individual Model | Price | Catalogue Number | Individual Model | Price | |
| Orb 4 | s orbital | £ 20.50 | Orb 12 | dx2-y2 | £ 34.38 | |
| Orb 5 | px | £ 22.10 | Orb 13 | fz3 | £ 34.38 | |
| Orb 6 | py | £ 22.10 | Orb 14 | fy3 |
£ 34.38 | |
| Orb 7 | pz | £ 22.10 | Orb 15 | fx3 |
£ 34.38 | |
| Orb 8 | dz2 |
£ 24.40 | Orb 16 | fxyz | £ 51.90 | |
| Orb 9 | dxy | £ 30.10 | Orb 17 | fx(y2-z2) |
£ 51.90 | |
| Orb 10 | dyz | £ 30.10 | Orb 18 | fy(z2-x2) |
£ 51.90 | |
| Orb 11 | dzx | £ 30.10 | Orb 19 | fz(x2-y2) |
£ 51.90 | |
| Orb 20 | sp hybrid orbital with large positive lobe | £ 16.43 | ||||
| Orb 21 | sp hybrid orbital with large negative lobe | £ 16.43 | ||||
| Orb 22 | loose p orbital | £ 11.00 | ||||
| Orb 23 | Tetrahedral frame | £ 11.00 | ||||
| Orb 24 | White balls per dozen |
£ 3.27 |
||||
The above prices are ex works. Packing, postage/delivery charges extra at cost.
VAT extra at current rate. Subject to our Standard Conditions of Sale.