title: Extending the pore size of crystalline metal phosphonates toward the mesoporous regime by isoreticular synthesis.
abstract: Crystalline microporous cobalt and nickel bisphosphonates with a hexagonal array of one-dimensional channels 1.8 nm in diameter have been prepared hydrothermally and provide the first example of the use of isoreticular chemistry in the synthesis of phosphonate metal-organic frameworks. The materials contain both physisorbed and coordinating water molecules in the as-prepared form, but these can be removed to give permanent extra-large microporosity, with pore volumes of up to 0.68 cm(3) g(-1), and coordinatively unsaturated sites, with concentrations up to 4.25 mmol g(-1).
authors.affiliation: School of Chemistry, University of St Andrews, Purdie Building, North Haugh, St Andrews, Fife KY16 9ST, United Kingdom.
authors.forename: Michael T
authors.initials: MT
authors.lastname: Wharmby
authors.forename: John P S
authors.initials: JP
authors.lastname: Mowat
authors.forename: Stephen P
authors.initials: SP
authors.lastname: Thompson
authors.forename: Paul A
authors.initials: PA
authors.lastname: Wright