SET OF 8 BUCHI DREIDING MOLECULAR STEREO-MODEL BENZENE RINGS, STAINLESS STEEL, C $125.00 – Picture 0

SET OF 8 BUCHI DREIDING MOLECULAR STEREO-MODEL BENZENE RINGS, STAINLESS STEEL, C $125.00 – Picture 1

SET OF 8 BUCHI DREIDING MOLECULAR STEREO-MODEL BENZENE RINGS, STAINLESS STEEL, C $125.00 – Picture 2

SET OF 8 BUCHI DREIDING MOLECULAR STEREO-MODEL BENZENE RINGS, STAINLESS STEEL, C $125.00 – Picture 3

SET OF 8 BUCHI DREIDING MOLECULAR STEREO-MODEL BENZENE RINGS, STAINLESS STEEL, C $125.00 – Picture 4

SET OF 8 BUCHI DREIDING MOLECULAR STEREO-MODEL BENZENE RINGS, STAINLESS STEEL, C $125.00 – Picture 5

SET OF 8 BUCHI DREIDING MOLECULAR STEREO-MODEL BENZENE RINGS, STAINLESS STEEL, C $125.00 – Picture 6

SET OF 8 BUCHI DREIDING MOLECULAR STEREO-MODEL BENZENE RINGS, STAINLESS STEEL, C $125.00 – Picture 7

SET OF 8 BUCHI DREIDING MOLECULAR STEREO-MODEL BENZENE RINGS, STAINLESS STEEL, C $125.00 – Picture 8

SET OF 8 BUCHI DREIDING MOLECULAR STEREO-MODEL BENZENE RINGS, STAINLESS STEEL, C $125.00 – Picture 9

Set Of 8 Buchi Dreiding Molecular Stereo-model Benzene Rings, Stainless Steel

C $125.00

Toronto, Ontario, Canada
May 1st

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While these are analogue physical model, they still have great potential value in constructing physical objects to represent molecular structures to a considerable degree of accuracy. They also have, in the opinion of many, great aesthetic beauty. These rings ideally should be used to augment an existing collection of Dreiding pieces so as to allow for addition of substituents to the ring or rings. However, by themselves, these 8 rings could also function alone to represent the topology of a number of fused aromatic 6-membered rings. Examples include Benzene (1-ring), naphthalene (2 fused rings) anthracene (3 rings), and most generally, an 8-ring fragment of graphene (a single monatomic layer of fused phenyl rings, as originally extracted from graphite in 2004, for a Nobel prize some years later). These items are wonderful artefacts of an era of scientific research that is fast fading into the rear view mirror. In a sense then, they are irreplaceable, as they represent the highest manifestation of physical analogue models of molecular structures ever manufactured. As is often the case with collectibles, some people will continue to increasingly value their unique ability to allow one (e.g. a student, researcher or aesthete) to actually hold a physical model in one's hands and study it as a real physical object. While digitized simulations of molecules on computer screens have their uses, they lack the wonderfully tactile presence that only a finely crafted, rigid steel object can provide.

“These 8 benzene (or phenyl) rings are defect-free genuine original Dreiding stereo-models. Each was precision manufactured originally by Buchi AG in Switzerland from high tensile strength stainless steel. The basic design provides complementary alternating female tube and male rod inserts structured so as to click-lock together at the precise distances for the bonds being formed. This still allows for free rotation around the new bond when the overall molecular architecture itself allows for rotational freedom about that bond. Within each ring, the carbon-carbon aromatic bonds (1.39 Angstroms in real benzene) are each measured at 35 mm separation. These pieces were purchased in North America in the 1970's and 1980's. They have been little used, and have no visible wear. These items are no longer manufactured and hence are collectible items. While digital molecules on computer screens have their uses, they lack the tactile presence that a finely crafted, rigid steel object provides.”

Country/Region of Manufacture	Switzerland
Model	BENZENE
Brand	Buchi Brinkmann Dreiding Stereomodel\
MPN	8 of BUCHI-BRINKMANN CATALOG NO. 15 56 830-5