Classroom Demonstration Models
Buy Unit style molecular models for really BIG organic, inorganic, biomolecules and lattices.
Unit style molecular models are the world's most versatile. They can be used for organic/inorganic, VSEPR, point group or lattice structures. The Unit atoms are 45mm diameter & can make giant models that are visible at the back of large lecture halls.
Unit was designed for building crystal lattice unit cells (hence the name). The key feature is that any atom is configurable for 1, 2, 3, 4, 5, 6, 8, (12 on special order) coordinate geometries
Bonds come in 60 & 80mm lengths for covalent bonds with other lengths for unit cells & a flexible 90mm bond for double & triple bonds.
The Unit system is unique in that any atom can take on any geometry. Below are just a few of the ways the atoms & pegs can be combined..
Unit Peg Placements & Atom Geometries
Examples of Where Used
Angled (4/8) Pegs
Left: Tetrahedral with 4 angled (4/8 )
Centre: Tri-Bi with 3 radial, 2 polar
Right: Octahedral w/ 4 radial, 2 polar
Any Unit atom can be built for univalence by adding one of the 3 different pegs. Combinations of these 3 pegs can produce any molecular geometry from divalent to trigonal on up to octahedral.
Watch the video below to see how easy it is to make any molecular geometry from any Unit atom.
Trigonal/Trigonal Bipyramidal Atoms
Tetrahedral/Trigonal Pyramidal Atoms