HGS Polyhedron Molecular Model

HGS Polyhedron Molecular Model

Prominent features
The14, 20 and 26-hedron atomic nuclei are made of ABS resin. By using these polyhedra, various bond angles needed for the molecular models can be precisely represented and since the polyhedra have various symmetrical characters both molecular models and crystal models can be easily realized. Since both are light in weight and sufficiently strong. The Setting of the molecular models is precisely observed. As the bonds are made of strong flexible plastics, the models of even complicated molecules can be easily assembled. Also, the ABC regin feature makes possible the easy assembly of models of strained compounds and distorted crystals.

Another advantageous feature of these HGS models is the variety of atom-polyhedra available. In sets intended mainly for individual use, the polyhedra are in large sizes. They are also in different colors to indicate different shapes of polyhedron are contained in each set.
These are as follow:

A 14-hedron results from truncating the eight corners of a cube along the lines passing through the center of each edge as shown in Fig. 2A. This is the basic atom-polyhedron, and is called the sp3 type with 4 holes, or the d2sp3 type with 6 holes.
The 20-hedron shown in Fig. 2B is called the sp2 type, and is used as a component of the benzene ring. An sp2 type 20-hedron with holes also at the top and bottom is called the dsp3 type.
The 26-hedron is made by truncating all the corners of the 14-hedron. (Fig. 2)

The 32-hedron is made also by truncating all the corners of pentagonal dodecahedron and icosahedron. (Fig. 2)

The angles represented in these various polyhedra are shown in Fig. 3.

For connecting the bonds to atom-polyhedra, three modes are devised according to different combinations as shown in Fig. 4.

The connection between an atom and its o-bond is designed so as to rotate freely around the o-bond but with some tightness. This somewhat tight rotation around the bonds is useful for the observation of conformational changes.

The bond distances in assembled models can be precisely represented by the length / shown in Fig. 5, and can be measured by using the A unit scale provided.

Connection of "bond" to "atom" and the bond distances

--- Fig. 1 ---

Small sphere and polyhedra
(Atm Nos. H, C⁴, m¹⁴,

, etc.)

Large sphere and polyhedra
(Atm Nos. LH, LC⁴,

, etc.)

--- Fig. 2 ---

--- Fig. 3 ---

--- Fig. 4 ---

--- Fig. 5 ---

Note: Read figure in ATOM code as example below.

... No. of holes
... No. of sides (sometimes omitted)

HGS Molecular Structure Model

HGS HINOMOTO PLASTICS CO., LTD.
1-10-24, Meguro-Honcho, Meguro-ku, Tokyo, Japan
PHONE: +81-3-3714-7226 FAX: +81-3-3714-4657
E-MAIL(technical support): hgs@po.sphere.ne.jp
E-MAIL(order support): t_kaneko@maruzen.co.jp