Optimised hydrothermal synthesis of multi-dimensional hybrid coordination polymers containing flexible organic ligands
authors Paz, FAA; Rocha, J; Klinowski, J; Trindade, T; Shi, FN; Mafra, L
nationality International
journal PROGRESS IN SOLID STATE CHEMISTRY
author keywords hydrothermal synthesis; metal-organic frameworks; coordination polymers; crystal engineering; transition metal centres; PMIDA
keywords CAMBRIDGE STRUCTURAL DATABASE; CRYSTAL-STRUCTURES; N-(PHOSPHONOMETHYL)IMINODIACETIC ACID; TRIMESIC ACID; FRAMEWORK; COMPLEXES; DESIGN; CHEMISTRY; SOLIDS; 4,4'-TRIMETHYLENEDIPYRIDINE
abstract In this paper, we summarise our recent research interest in the hydrothermal synthesis and structural characterisation of multi-dimensional coordination polymers. The use of N-(phosphonomethyl)iminodiacetic acid (also referred to as H(4)pmida) in the literature as a versatile chelating organic ligand is briefly reviewed. This molecule plays an important role in the formation of centrosymmetric dimeric [V2O2(pmida)(2)](4-) anionic units, which were first used by us as building blocks to construct novel coordination polymers. Starting with [V2O2(pmida)(2)](4-) in solution, we have isolated [M2V2O2(pmida)(2) (H2O)(10)] species (where M2+ = Mn2+, Co2+ or Cd2+) via the hydrothermal synthetic approach, which were then employed for the construction of [CdVO(pmida)(4,4'-bpy)(H2O)(2)]center dot(4,4'-bPY)(0.5)center dot(H2O), [CoVO(pmida)(4,4'-bpy)(H2O)(2)]center dot(4,4'-bpy)(0.5), [Co(H2O)(6)]CoV2O2(pmida)(2)(pyr)(H2O)(2)]center dot 2(H2O) and [Cd2V2O2(pmida)(2)(pyr)(2)(H2O)(4)]center dot 4(H2O) by the inclusion of bridging organic ligands in the reactive mixtures, such as pyrazine (pyr) and 4,4'-bipyridine (4,4'-bpy). These materials can contain channel systems, and exhibit magnetic behaviour, not only due to the V4+ centres but also to the transition metal centres which establish the links between neighbouring dimeric [V2O2(pmida)(2)](4-) anionic units. A closely related anionic moiety, [Ge-2(pmida)(2)(OH)(2)](2-), was engineered to allow the study of such crystalline hybrid materials using one- and two-dimensional high-resolution solid-state NMR. (C) 2005 Elsevier Ltd. All rights reserved.
publisher PERGAMON-ELSEVIER SCIENCE LTD
issn 0079-6786
year published 2005
volume 33
issue 2-4
beginning page 113
ending page 125
digital object identifier (doi) 10.1016/j.progsolidstchem.2005.11.033
web of science category Chemistry, Inorganic & Nuclear
subject category Chemistry
unique article identifier WOS:000238336900008
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journal impact factor 6.353
5 year journal impact factor 8.694
category normalized journal impact factor percentile 96.667
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