Coordination chemistiy

T. Chivers and R. W. Hilts, Coordination Chemistiy of Cyclic and Acyclic PNS and PNSe Ligands, Coord. Chem. Rev., 137, 201 (1994). 

A. Rejvan and M. Cais, Progress in Coordination Chemistiy. Elsevier, Amsterdom. 1968, p. 32. 

Beyond their ubiquitous role in organic synthesis, stabilized, semistabilized, or nonstabilized phosphonium ylides are fascinating ligands of transition metals. Their coordination chemistiy is dominated by C-coordination to the metal center they are known to act exclusively as carbon-centered ligands rather than as C=P ligands. 

J. Reedijk in Comprehensive Coordination Chemistiy (Eds. G. Wilkinson, R. D. Gillard, J. McCleverty), Pergamon Piess, Oxford, 1987. Vol. 2. 

The coordination chemistiy of the actinides in aqueous environments can be segregated along two lines, low valency (di-, tri- and tetravalent) and high valency (penta- and hexavalent). For actinide ions with a low valency, the coordination chemistry is dominated by ionic bonding. As a result, the coordination number and geometiy of these aqueous complexes is dictated by the steric bulk and electronic... 

The coordination chemistiy of the actinides, especially thorium and uranium, continues to be of great interest. Considered hard metal ions, An(III to VI) have the... 

Alkoxide and aryloxide ligands are excellent hgands for the actinides. As a result, these ligands have been studied extensively in the coordination chemistiy and reactivity of tri-, tetra-, penta-, and hexavalent actinides. The alkoxides and aryloxides can be synthesized by a variety of routes the two most popular routes include direct reaction of actinide halides with alkali metal salts of the alkoxide or aryloxide of interest and protonolysis of actinide amides by alcohols. 

Because of their optical and photophysical properties, metal complexes offer many advantages compared to other systems [74]. Reversibility and tunabiUty by incorporating different metal ion and ligand substituents make coordination chemistiy particularly attractive. 

Although manganese has a very rich coordination chemistiy - it coordinates to a great variety of ligands with several coordinating atoms (from mono-dentate to polydentate) - the manganese complexes with the greatest catalytic relevance in selective oxidation reactions are those with salen- and... 

For some years we and others have investigated the chemistry of crown thioethers such as 9S3 (1,4,7-trithiacyclononane) (Figure 3). This work has resulted in development of facile synthetic routes to these previously precious compounds, understanding of their unusual confonnational properties, and providing extensive infonnation on their coordination chemistiy. From this scientific infrastructure we turned our attention to how these... 

Figure 5 Structures of [GdL3(H20)3]2 (L = trifluoroacetate) (a) and [CeL3(phen)]2 (L = acetate) (b) (RE, black (large balls) O, gray N and F, black (small balls) C, white H, omitted). (Reproduced with permission from fom R. Wang and Z. Zheng, Rare Earth Complexes with Carboxyhc Acids, Polyaminopolycarboxylic Acids and Amino Acids in Chun-Hui Huang, Rare Earth Coordination Chemistiy Fundamentals and Apphcations. John Wiley Sons (Asia) Pte Ltd, 2010.)...

With only a few exceptions, the coordination chemistiy of rare earth elements in the oxidation state is basically the coordination chemistry of tetravalent cerium. 

He was the organizer of the Fourth International Symposium on the Activation of Dioxygen and Homogeneous Catalytic Oxidation (Balatonflired, Hungary, 1990), and co-organizer of the XXII International Conference on Coordination Chemistiy (Budapest, 1982). He is member of the Hungarian Chemical Society and Fellow of the Royal Society of Chemistiy. 

Recent advances on material s chemistiy have contributed to develop highly featured carbon nanostructures with unforeseen properties that offer unexpected opportunities in many fields. " The majority of these applications derives from the flexible coordination chemistiy of carbon atoms and their unique ability to bind other heteroatoms (either on the surface or inserted within the structural framework) or other carbon atoms, resulting in a wide spectrum of materials and allotropic forms, as shown in Fig. 1. The main carbon allotropes of interest in electrochemical applications and frequently used carbon electrodes are diamond, graphite, graphene and carbon nanotubes. A detailed review on carbon materials structure can be found in ref. 15,17 and 18, and below we summarize some important facts about their characteristics ... 

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