Descrição
*Now includes a new student guide for Polyhedron Molecular Models to help students gain a deeper understanding of molecular structures!* A New Set of the Best Quality and the Best for Undergraduates (1) Hybrid sp3, sp2, and sp atoms are easily recognized. (2) P, S, Cl, and metal atoms are included. (3) The set has many carbon 28 sp3-C and 12 sp2-C atoms. So, it is possible to construct a variety of molecules as exemplified below. (4) Bond lengths are easily recognized by color. (5) Smooth conformational changes such as the cyclohexane ring-flip. (6) Formation of three-membered rings such as cyclopropane and epoxide. (7) Electronic orbital plates are useful for studying -molecular orbitals. For example, the Woodward-Hoffmann rule shown below can be demonstrated by using this set.
The use of 14, 20, and 26-sided polyhedrons as atomic nuclei makes these models unique. The various bond angles and distances needed for the models can be precisely represented, and the symmetrical characteristics of the structures can be observed. – Color-coded polyhedrons to indicate different elements – Flexible polyacetal connecting bonds permit easy assembly of complicated molecules and models of strained compounds and distorted crystals – Å scale provided with sets allows measurement of bond distances – Bond puller included for easy disassemble – Two types of orbital plates for p atomic orbitals and π molecular orbitals (some sets only)
MARUZEN – 2013
