This review deals with the utility of cyclophosphazenes and carbophosphazenes as supports for the construction of multi-site coordination platforms. The rich nucleophilic substitution chemistry of the chlorocyclophosphazenes and the analogous carbocyclophosphazenes can be utilized to
replace chlorine atoms from these inorganic rings with coordinating side arms. This leads to the assembly of interesting compounds that have the capability to bind to multiple transition metal ions. Using this strategy several coordination ligands have been constructed. After a brief introduction
to such ligands, this review deals with pyridyloxy cyclophosphazenes and carbophosphazenes. These ligands, in addition to possessing multiple coordinating arms, are also considered to be structurally flexible systems. This is because the pyridyl substituents are connected to the inorganic
ring skeleton through flexible oxygen spacer atoms. The coordination chemistry of these pyridyloxy systems is discussed particularly in light of the work that has emanated from our laboratories in India.
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MULTI-SITE COORDINATION LIGANDS;
Document Type: Research Article
Tata Institute of Fundamental Research Centre for Interdisciplinary Sciences 21, Brindavan colony, Narsingi Hyderabad-500 075, India; Department of Chemistry Indian Institute of Technology Kanpur-208 016, India. [email protected]
Tata Institute of Fundamental Research Centre for Interdisciplinary Sciences 21, Brindavan colony, Narsingi Hyderabad-500 075, India
February 1, 2013
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International Journal for Chemistry and Official Membership Journal of the Swiss Chemical Society (SCS) and its Divisions
CHIMIA, a scientific journal for chemistry in the broadest sense, is published 10 times a year and covers the interests of a wide and diverse readership. Contributions from all fields of chemistry and related areas are considered for publication in the form of Review Articles and Notes. A characteristic feature of CHIMIA are the thematic issues, each devoted to an area of great current significance.
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