Accession Number : ADA185094

Title :   Soluble Metal Chelate Polymers of Coordination Numbers Six, Seven and Eight.

Descriptive Note : Technical rept.,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF CHEMISTRY

Personal Author(s) : Archer, Ronald D ; Wang, Bing ; Tramontano, Valentino J ; Lee, Annabel Y ; Ochaya, Ven O

PDF Url : ADA185094

Report Date : 01 Apr 1987

Pagination or Media Count : 6

Abstract : Metal coordination polymers possess certain properties (radiation sensitivity, catalytic activity, unique connectivities, etc.) which can provide advantages over their organic counterparts. However, careful design is necessary to avoid intractability, which has plagued metal chelate macromolecules in the past. Nonrigid coordination centers, bulky groups to prevent stacking, strongly coordinating solvents, oxo-metal centers, and nonlinear connections in octahedral systems are all being used to counter the insolubility of the more common four-coordinate systems. Circumventing the problems of low ligand solubility, inert metal centers which react too slowly to make good polymers, and libile metal centers which don't produce very linert species will be discussed in connection with new zirconium (IV) adhesives and radiation sensitive cobalt (III) and dioxouranium (VI) polymers, for which definitive connectivity and chain lengths have been well defined.

Descriptors :   *CHELATE COMPOUNDS, *POLYMERS, *INORGANIC POLYMERS, *ADHESIVES, *METAL COMPOUNDS, ORGANOMETALLIC COMPOUNDS, KETONES, METAL METAL BONDS, MOLECULE MOLECULE INTERACTIONS, LIGANDS, MACROMOLECULES, SOLUBILITY, ZIRCONIUM, COBALT, URANIUM

Subject Categories : Inorganic Chemistry
      Polymer Chemistry
      Adhesives, Seals and Binders

Distribution Statement : APPROVED FOR PUBLIC RELEASE