Showing papers in "Coordination Chemistry Reviews in 2000"

TL;DR: The main classes of fluorescent molecular sensors for cation recognition are presented: they differ by the nature of the cation-controlled photoinduced processes: photoinduced electron transfer, photoinduced charge transfer, excimer formation or disappearance as discussed by the authors.

TL;DR: In this paper, the development of efficient light conversion molecular devices (LCMDs) based on lanthanide complexes is reviewed, with emphasis on the work of our group, who have adopted a strategy based upon both theoretical and experimental (synthesis and methodological) investigations.

TL;DR: In this article, the authors present a review of the chemical systems able to act as luminescent chemosensors for this class of metal ions, since some of them are present in biological systems in trace amounts and, at the same time, they can represent an environmental concern when present in uncontrolled amounts.

TL;DR: The 1,2,4-triazole ligands have gained great attention as ligands to transition metals by the fact that they unite the coordination geometry of both pyrazoles and imidazoles, and in addition exhibit a strong and typical property of acting as bridging ligands between two metal centres.

TL;DR: Stable lanthanide complexes have been devised in which the emission intensity or lifetime is a sensitive function of pH, pO2 or halide concentration following excitation in the range 350-380 nm as discussed by the authors.

TL;DR: The evolution of research in luminescent signalling at Queen's University of Belfast is critically reviewed in the context of related work from the literature in this paper, where photoinduced electron transfer (PET) is found to be a robust design principle for such work.

TL;DR: In this article, the structures and magnetism of complex-based metal assemblies derived from [M(CN) 6 ] n − (M=Cr 3+, Mn 3+, Fe 3+ and Co 3+ ), Fe 2+ ; n =3, 4) and coordinatively unsaturated [M A (L) x ] m + (M A =Mn 2+, Ni 2+, Cu 2+ and Mn 3+, Fe 3+, and L=polyamine ligand, salen 2− derivatives) are reviewed.

TL;DR: The structural aspects of the complexes formed by thiosemicarbazones and semicarazones (TSCs) with the metallic elements of Groups 12, 13, 14 and 15 are surveyed up to 1998.

TL;DR: In this paper, a review article highlights advances made in anion coordination chemistry in 1997 and 1998 and highlights the role of anions in directing the self-assembly of complex molecular architectures.

TL;DR: An extensive survey of structural trans-effects in octahedral d-transition metal complexes is presented in this article, which allows the identification of general STE classes into which the majority of common STE ligands fit.

TL;DR: In this review, the efforts of the last 10 years in the development of nonheme iron catalysts are summarized and discussed.

TL;DR: In this article, the stereochemical properties of over 120 pyrazole-based chelating ligands, studied by single-crystal X-ray crystallography were analyzed.

TL;DR: In this paper, a review of recent developments in coordination chemistry as they relate to luminescence-based chemical sensing is presented, focusing on the chemical features that permit the sensors to function selectively, and mechanistic schemes that permit analyte recognition and binding events to be converted to luminecence responses.

TL;DR: In this paper, the authors present a review of metal interactions with nucleobases, focusing on the coordination chemistry of metal species with the heterocyclic parts of nucleobase.

TL;DR: A review of the recent literature concerning coordination chemistry and the reactivity patterns of metal-dinitrogen complexes is presented in this article, where the emphasis is on synthesis and reactivity pattern of recently discovered dinitrogen compounds.

TL;DR: A review of the literature on the metal ion complexes of carbohydrate type ligands with the emphasis on the past 20 years, discussing the equilibria and structure in aqueous solution together with the structures determined for the solid state complexes are collected for comparison as discussed by the authors.

TL;DR: In this article, a 5-coordinate excited state complex, or exciplex, is proposed to account for temperature dependent quenching data of bis-phenanthroline (dπ)6 transition metal compounds.

TL;DR: In this article, the authors proposed to use the PtX2(diimine) chromophores in dyads and triads with the goal of constructing a molecular photochemical device for lightto-chemical energy conversion.

TL;DR: In this paper, specific molecular sensors are classified according to the type of receptor-anion interaction, whether hydrogen bonding or metal-ligand interactions, for which the highest selectivity is observed when the receptor subunit specifically interacts with the R portion.

TL;DR: In this article, a review focusing primarily on the structural features of these metalloproteins and discusses synthetic efforts to develop small molecule models of the active sites of the enzymes is presented.

TL;DR: In this article, the preparation of catalysts for cationic nickel and palladium complexes with multidentate ligands has been studied and a review of the recent advances is presented.

TL;DR: The synthesis of mechanically interlocked molecules where templates orient the reactants to produce permanent structures as the result of new linkages has been studied in this article, with a focus on the components of chemical templates.

TL;DR: A review of the literature on the chemical reduction of nitrate in aqueous systems has found about a hundred articles dealing with nitrate removal from such systems, with the majority having been published over the last decade as discussed by the authors.

TL;DR: In this paper, the electrochemical and optical sensing of anionic guest species in organic and aqueous media using transition metal signalling units such as cobaltocenium, ferrocene and ruthenium (II) bipyridyl incorporated into various acyclic, macrocyclic and calix[4]arene ligand frameworks.

TL;DR: In this article, the authors surveyed the progress toward the synthesis and structural and spectroscopic characterization of model complexes of the galactose oxidase (GAO) active site and concluded with a description of more recent discoveries of catalytic reactivity by Cu(II)-phenoxyl radical species that replicate and provide insights into GAO function.

TL;DR: In this paper, the synthesis, structure, and properties of stable silylenes are described together with those of related divalent species of the other Group 14 elements, and some detailed descriptions are allotted to new aspects in the relationship between the DVSs and the corresponding double-bond species of heavier Group 14 element.

TL;DR: In this article, Europium complexes in the +3 oxidation state, with coordination numbers six, seven, eight, nine and ten, were studied by X-ray structural analyses and an attempt was made to correlate the results with the emission spectrum interpretation.

TL;DR: In this article, the authors present a systematic study of the water molecule, which possesses 43 critical points in the gradient vector field L ( r ), which is defined as minus the Laplacian of the electron density, ∇ 2 ρ, in the context of the theory of atoms in molecules.

TL;DR: In this paper, the role of the coordination bond in polyporphyrin architecture is discussed and a review of the role and role of coordination bonds in the construction of polymorphs is presented.

TL;DR: In this paper, a new type of silver(I) coordination complex derived from polycyclic aromatic compounds is reviewed, and the combination of the plasticity of the metal ion, coordinative versatility of the aromatic ligand, solvent effect and the nature of the counteranions for designing metal complexes with a wide range of infinite frameworks.