Synthesis noninteractive

Thus the first section to follow pertains to the synthesis of bulk materials including amorphous and mesoporous oxide supports (chapters 1 ), heteropolyacids (chapter 5), and colloidal metals (chapter 6). The second section covers the synthesis of heterogeneous materials, and has been divided into syntheses in nanoscale domains (chapters 7-10) and those based on two-dimensional metal complex-substrate interactions (chapters 11-14), or a clever way around noninteracting precursors via viscous drying (chapter 15). Effects of drying (chapter 16) and pretreatment (chapter 17) comprise the third section of the book. 

This synthesis, undertaken by Klempner, Frisch, and Frisch " " makes use of two noninteracting types of latexes. These are synthesized separately as linear polymers, mixed together, along with crosslinkers and catalysts, and co-coagulated. The material is then subjected to a simultaneous crosslinking step via heating. Table 5.4 delineates materials employed in the synthesis. " One latex usually was a polyurethane. 

The spectacularly high yield of the [2]catenane is a testament to the efficiency of the template-directed route to its synthesis. In acetonitrile, the [BBIPYXY] dication and BPP34C10 exist in a noninteractive state. However, the addition of BBB results in the formation of a highly coloured solution. The reason is as follows. Once the first m rmolecular Sn2 reaction has occurred to form the trication (Scheme 3), the mutual recognition (for example, by the emerging K—n stacking interactions) between the components ensures that the second intramolecular Sn2 reaction to afford the [2]catenane, proceeds rapidly via a favoured transition state to the cooperatively assembled molecule. The relatively fast rate of the final cyclisation step is illustrated by the fact that the 1 1 complex between the tricationic species and BPP34C10 has not been detected in the reaction mixture. 

A noninteractive approach has been built at the Sumitomo Chemical Company for the SYNSUP program in which 2500 reactions are coded. For this purpose several limiting instructions are necessary to prune the synthesis tree. The user may give several constraints on the number of steps... 

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