Cadmium coordination chemistry

R. H. Prince, Zinc and Cadmium Chap. 56.1, pp. 925-1045, in Comprehensive Coordination Chemistry, Vol. 5, Pergamon Press, Oxford, 1987. 

This survey of the coordination chemistry of cadmium and mercury is based on, and continues, the reviews given in the first edition of this series.1,2... 

This volume is concerned with fundamental developments in the coordination chemistry of the elements of Groups 9-12 since 1982. The individual chapters cover the coordination chemistry of cobalt, iridium, nickel, palladium, platinum, copper, silver and gold, zinc and cadmium, and mercury. Unfortunately, because of factors beyond the Editors control, the manuscript for the proposed chapter on rhodium was not available in time for publication. 

The coordination chemistry of zinc and cadmium in both the non-biological and biological areas has been the subject of intensive research every reference cannot be cited and selection has had to be severe. Priority is given mainly to work of the last 10 years but frequent references to reviews are provided in the text, both to those which are mainly comprehensive listings of papers and to those which deal critically with a particular topic leading back into earlier work. Wherever possible references have been chosen with the latter feature in mind, particularly where several reports on one topic have appeared at about the same time. 

This area of macrocyclic coordination chemistry is also the subject of much recent activity, partly because the zinc and cadmium complexes have interesting spectroscopic and photochemical properties. 

The kinetic and reactivity aspects of the coordination chemistry of, inter alia, zinc1469 and cadmium, have featured in the past in many full and comprehensive reviews9-11,16-226 which also include an account of these aspects of their bioinorganic chemistry here we shall survey some recent studies in this area.1468o-h... 

The cadmium(II) complex corresponding to 9 (M = Cd n = 2) was the first texaphyrin made [6], This aromatic expanded porphyrin was found to differ substantially from various porphyrin complexes and it was noted that its spectral and photophysical properties were such that it might prove useful as a PDT agent. However, it was also appreciated that the poor aqueous solubility and inherent toxicity of this particular metal complex would likely preclude its use in vivo [29-31], Nonetheless, the coordination chemistry of texaphyrins such as 9 was soon generalized to allow for the coordination of late first row transition metal (Mn(II), Co(II), Ni(II), Zn (II), Fe(III)) and trivalent lanthanide cations [26], This, in turn, opened up several possibilities for rational drag development. For instance, the Mn(II) texaphyrin complex was found to act as a peroxynitrite decomposition catalyst [32] and is being studied currently for possible use in treating amyotrophic lateral sclerosis. This work, which is outside the scope of this review, has recently been summarized by Crow [33],... 

Alloys Analytical Chemistry of the Transition Elements Cadmium OrganometaUic Chemistry Mercury Inorganic Coordination Chemistry Tin Inorganic Chemistry Zinc Inorganic Coordination Chemistry. 

Beryllium Magnesium Organometalhc Chemistry Cadmium Inorganic Coordination Chemistry Mercury Organometalhc Chemistry Zinc Organometalhc Chemistry. 

Aluminum Inorganic Chemistry Cadmium Inorganic Coordination Chemistry Chromium Biological Relevance Hard Soft Acids and Bases Lead Inorganic Chemistry Mercury Inorganic Coordination Chemistry Mercury Organometallic Chemistry Thallium Inorganic Chemistry. 

The same coordination geometry was also inferred from the analysis of the lowest energy LMCT bands (see Ligand-to-Metal Charge Transfer) in the far-UV absorption spectra of Zu7- and Cd7-MT, and those of corresponding tetrahedral halide complexes (see Cadmium Inorganic Coordination Chemistry see Zinc Inorganic Coordination Chemistry) Further support came from... 

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