* Manufactured by Darling Model Kits, this custom kit was designed by T.W.Graham Solomons. * The kit consists of Darling's basic Molecular Vision kit with a few additional pieces, so that p orbitals could be shown in molecules like acetylene. * This customized kit also has pieces that allow linear geometry for the sigma bonds of alkynes while also having orthogonal connections at each atom for the associated p orbitals. * By attaching balls of the right colors it is possible to show the lobes of the p orbitals that make up the pi bonds in an alkyne. * Ball colors can be matched symmetrically to show in-phase orbital overlap, or antisymmetrically to show an antibonding state. * Use of colored balls with the appropriate framework geometry is a very nice feature of the Darling model set. * Pieces from Darling's inorganic model set and are used for octahedral geometry.T. W. Graham Solomons is the author of 'Molecular Visions Organic Model Kit with Molecular Modeling Handbook', published 1999 under ISBN 9780471362715 and ISBN 0471362719.
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