Cochranes molecular models

An extensive model system offering 15 atomic bonding configurations in 12 colors of plastic atoms. The carbon atom is represented in nine configurations: linear, trigonal (in five angle variations), tetrahedral, octahedral, trigonal-bipyramidal. Models come in two sizes: Orbit and Minit. Spare atom centers and bonding tubes are available for all model kits.

Please see Technical Information Bulletin AL-183 for a listing of these items, available on our website at sigma-aldrich.com

Learn about molecular shape, stereochemistry, isomerism and bonding in organic and inorganic molecules and complex ions. This advanced set is most suitable for group work in schools, universities and research laboratories. Includes instruction/activity booklet. Supplied in a sturdy compartmented box. Includes 5 instruction/activity booklets.

Scale: 2 cm = 0.1 nanometer (1 A), Minit

ATOMS:

• 1-prong: Hydrogen, white (250), Nitrogen, blue (50), Oxygen, red (50), Fluorine, light green (50), Sulfur, yellow (20), Chlorine, green (90)
• 2-prong linear: Carbon, black (50), Nitrogen, blue (20)
• 2-prong 100°: Sulfur, yellow (50)
• 2-prong 110°: Oxygen, red (125)
• 3-prong 120°: Carbon, black (100), Nitrogen, blue (30)
• 4-prong tetrahedral: Carbon, black (200), Nitrogen, blue (50), Oxygen, red (50), Phosphorous, purple (25), Sulfur, yellow (25), Metal, silver (20)
• 6-prong octahedral: Carbon, black (20), Sulfur, yellow (10), Metal, silver (20)
• 5-prong trigonal bipyramid: Carbon, black (50), Nitrogen, blue (10), Oxygen, red (15), Phosphorous, purple (10)
• W pegs (50)

BONDS:

• Straw, green, 2.5 cm (960)
• Straw, green, 2 cm (240)
• Straw, green, 1.5 cm (320)
• Straw, red, 3 cm (96)
• Straw, red, 2 cm (96)
• Straw, mixed set/26 (5)
• St v flexible white, 5 cm (20)
• St v flexible white, 2.5 cm (30)