By M. Kaloustian
Within the final sector century there were in simple terms seminal contributions within the box of natural stereochemistry - either by way of Kurt Mislow and his coworkers - ones that experience clarified the fundamental strategies of stereotopicity and chirotopicity. now not withstanding a couple of different sporadic contributions by way of others, to this point there were no systematic makes an attempt to unify and increase the conceptual framework and terminology of natural stereochemistry. current phrases are often misused or abused, wanted phrases - redundant, complicated or arguable - are invented randomly, and but different wanted phrases haven't visible the sunshine of day. This three-part paintings provides the weather of an easy, uniform and entire language of the stereochemical underpinnings of natural chemistry. it really is crucial studying for commercial chemists, graduate scholars, college professors and commercial researchers within the box of natural Stereochemistry.
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The concept of junctivity described here is, in principle, extendable to self-assembly of 2D and 3D H-bonded networks. Summary We have defined junctive and disjunctive processes as those that involve the formation and breakdown of directed bonds. We have defined fundamental and topological junctive simplexes, and identified the fundamental types of junctive/disjunctive processes. For a given reacting site, site junctivity (ja) is defined as the number of directed bonds formed at that site and simplex junctivity (js) as the sum total of all the site ligogenicities within the simplex.
20) summarizes the interrelationships between junctive simplexes and processes derived from them. A junctive simplex is either fundamental (m,n,p; not subscripted) or topological (mt,nt/pt; subscript t means a topological simplex). Monoatomic simplexes are always fundamental and are not subscripted. Processes may involve junctive and/or disjunctive simplexes (subscripts j and d mean junctive and disjunctive components, respectively):19 junctive: (m,n)j, (m,n,p)j, (nw)j/ ("WPOj disjunctive: (nv"t)d/ (nwp)d Fundamental junctive/disjunctive processes (shown in square parentheses) are derived from fundamental simplexes, and are either simple or complex: simple: (m,n)j, (m,n,p)j, (m,n)d/ (nwpJd (only junctive or disjunctive components are found) complex: (m,n)j(m,n)d (both junctive and disjunctive components are present).
Examples of Composite Trimolecular, Tetramolecular and Pentamolecular Junctive Processes 18 VIII. 16 (p. 20) summarizes the interrelationships between junctive simplexes and processes derived from them. A junctive simplex is either fundamental (m,n,p; not subscripted) or topological (mt,nt/pt; subscript t means a topological simplex). Monoatomic simplexes are always fundamental and are not subscripted. Processes may involve junctive and/or disjunctive simplexes (subscripts j and d mean junctive and disjunctive components, respectively):19 junctive: (m,n)j, (m,n,p)j, (nw)j/ ("WPOj disjunctive: (nv"t)d/ (nwp)d Fundamental junctive/disjunctive processes (shown in square parentheses) are derived from fundamental simplexes, and are either simple or complex: simple: (m,n)j, (m,n,p)j, (m,n)d/ (nwpJd (only junctive or disjunctive components are found) complex: (m,n)j(m,n)d (both junctive and disjunctive components are present).