Coordination compounds overview

Photochemistry and Photophysics of Coordination Compounds Overview and General Concepts... 

Balzani V, Bergamini G, Campagna S, Puntoriero F. Photochemistry and photophysics of coordination compounds overview and general concepts. In Balzani V, Campagna S, eds. Photochemistry and Photophysics of Coordination Compounds I. Berlin Verlag 2007 1-36. 

Photocatalytic systems with light-sensitive coordination compounds and possibilities of their spectroscopic sensitization — an overview. H. HennigandD. Rehorek, Coord. Chem. Rev., 1985,61,1 (281). 

Although much of the chemistry of transition metals is associated with coordination compounds, there are some important aspects of their behavior that are related to other types of compounds. In this section, a brief overview of the chemistry of transition metals will be given with emphasis on the first-row metals. 

Coordination compounds have been produced by a variety of techniques for at least two centuries. Zeise s salt, K[Pt(C2H4)Cl3], dates from the early 1800s, and Werner s classic syntheses of cobalt complexes were described over a century ago. Synthetic techniques used to prepare coordination compounds range from simply mixing the reactants to employing nonaqueous solvent chemistry. In this section, a brief overview of some types of general synthetic procedures will be presented. In Chapter 21, a survey of the organometallic chemistry of transition metals will be presented, and additional preparative methods for complexes of that type will be described there. 

This overview covers some of the rules for naming simple inorganic compounds. There are additional rules, and some exceptions to these rules. The first part of this overview discusses the rules for deriving a name from a chemical formula. In many cases, the formula may be determined from the name by reversing this process. The second part examines situations in which additional information is needed to generate a formula from the name of a compound. The transition metals present some additional problems therefore, there is a section covering transition metal nomenclature and coordination compounds. 

This review will attempt to deal with the chemistry of the halogens appropriate to those compounds considered as coordination compounds. It will not include reference to astatine, which is covered by the general reviews listed above and for which little chemistry is known at all, and almost none as a coordinated ligand. Since the chemistry of the halides of individual elements is treated in the chapters for those elements, this section will be concerned with an overview of the general properties of the group. 

Due to some special structural and magnetic peculiarities, in particular, free-radical properties, the quinone ligands and their metal complexes are apart from the other kinds of coordination compounds [125a, 138a], as will be shown below. Here we present an overview of the main methods for the synthesis of complexes containing benzoquinone, semiquinone, and catecholate ligands, and peculiarities of the products. 

In this chapter, we have discussed the importance of the transition metals from the standpoint of the metals themselves and a few of their compounds. Because the chemistry of the transition metals is so closely linked to their tendency and ability to form coordination compounds, the next two chapters present an overview of that vast area of inorganic chemistry. Chapter 21 deals with the chemistry of organometallic compounds, many of which contain transition metals. Collectively, the last four chapters of this book show clearly the enormous importance of the transition metals and their chemical behavior. 

This chapter has presented an overview of several important aspects of the chemistry of coordination compounds. In addition to the elementary ideas related to bonding presented here, there is an extensive application of molecular orbital concepts to coordination chemistry. However, most aspects of the chemistry of coordination compounds treated in this book do not require this approach, so it is left to more advanced texts. The references at the end of this chapter should be consulted for more details on bonding in complexes. 

Rare earth /3-diketonate complexes usually are synthesized using the RE chloride and ammonium or sodium /S-diketonate in water or ethanol solvent. Rare earth chlorides are preferred over nitrate or acetates due to the lower coordination power of chloride anion. Binnemans, Mehrotra, Thompson , Joshi and Manas give an overview of the synthesis of rare earth ion complexes with /S-diketonate ligands including different RE +-(1,3-diketonate) coordination compounds. 

In this section, selected and representative vanadium coordination compounds will be introduced. The aim is to provide a first overview of those coordination modes which are related - or can be related - to the coordination of vanadium to biogenic ligands in its biologically relevant oxidation states +III, +IV and +V. Additional, and usually more complex, structures will be provided in those sections of Chapters 4 and 5, that are dedicated to model chemistry. For simplicity, the coordination compounds will be grouped according to the type of ligand functions dominating the coordination sphere ... 

Isomers are compounds with the same chemical formula but different properties. We discussed many aspects of isomerism in the context of organic compounds in Section 15.2 it may be helpful to review that section now. Figure 22.8 presents an overview of the most common types of isomerism that occur in coordination compounds. 

The goal of this chapter is to present an overview of reports in the scientific literature that involve the use of microwave heating in the preparation of inorganic and organometallic compounds. For practical purposes, no attanpt has been made to cover compounds of all elements. The scope has been limited to coordination compounds and organometallic complexes containing transition metals. The focus is on molecular compounds and not on materials that could be classified as nanoparticles, polymers, supported catalysts, metal-organic frameworks, or solid-state materials. 

This short and not exhaustive overview illustrates the actual level of the control of the structure - second-order NLO activity relationship in organometallic or coordination compounds and therefore their potentiality as second-order NLO chromophores. 

The first brief review on ° Zn SSNMR spectroscopy was written by Wu in 1998 [11]. Two overviews of Zn SSNMR later appeared in 2001 [12] and 2002 [13]. These reviews were mainly focused on the applications of Zn SSNMR spectroscopy to several inorganic materials and coordination compounds. EUis and Lipton later pubfished a review with particular attention being paid to the low-temperature SSNMR experimental methods designed for Zn and Mg [14]. In the book of The Chemistry of Organozinc Compounds, Zn NMR spectroscopy ofboth solution and sofids was briefly reviewed [15]. The research paper by Power and co-worker pubfished in 2010 provides a survey of Zn NMR parameters in sofids [16]. Very recently, Zn SSNMR spectroscopy of zinc-binding proteins was briefly summarized [17]. Here, we set out to provide a concise, but complete, overview of the literature relevant to Zn SSNMR spectroscopy up to early 2013. It is our hope that the article will encourage more people to choose Zn SSNMR spectroscopy as a tool for solving the problems encountered in their research. 

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