Visit our "chemkits" website for more information, photos, demonstration videos and a free down loadable instruction booklet. This kit is similar to our Organic Chemistry kit for students, except that it has about three times as many parts and most of the tubing is pre cut for plug and play model assembly.The kits consist of durable metal clusters representing atoms and colored tubing representing the bonds. Using the tubing and clusters the atoms are interconnected to construct three dimensional framework models of molecules and ions. The scale is one inch per Angstrom. The metal clusters included allow for sp, sp2 and sp3 hybridized atoms providing the ability to build single, double and triple bonds.
Pi bonds is one of the strengths of these models because they accurately differentiate between sigma and pi bonds and the lack of rotation about that bond axis. They are ideal for explaining geometric isomers E and Z or cis and trans, stereoisomers R and S and conformational analysis of cyclic hydrocarbons, Lewis structures, molecular geometry and organometallic co-ordination complexes. There are enough pieces included to build numerous cyclic rings such as steroids and a multitude of tubing that are color coded for Carbon, Chlorine, Bromine, Iodine, Fluorine, Nitrogen, Oxygen and others.The kits are compact enough to carry easily. Assembled models are light weight and stay assembled. We have prepared lab exercises teachers could incorporate directly into their classes. 90 Tetrahedral 40 Black 50 Back/White. 54 Trigonal Bipyramidal 25 Red 20 Black/Red C-O. 30 Octagonal 15 Blue 20 Black/Blue C-N. 40 Angles 20 White 20 Black/Red C=O. 50 Pins 20 Black/Blue C=N. 80 C-C 20 Dark Green. 30 C=C 20 Light Green. The item "Organic Chemistry Framework Molecular Model Kit, Instructor's Set FREE SHIPPING" is in sale since Thursday, September 29, 2011. This item is in the category "Home & Garden\Kids & Teens at Home\School Supplies\Teaching Supplies". The seller is "chemkitsinc" and is located in Cedar Park, Texas. This item can be shipped worldwide.