Iron family metals

On the basis of their behaviour and of their applications, however, it may be useful to describe these metals subdividing them into two families iron family and platinum family. 

Metals of the iron family. These metals pertain to the 1st transition row. Iron (Fe, [Ar]3r/64.v2), name from the Anglo-Saxon iron, symbol from the Latin name ferrum (iron). The use of iron dates back to prehistoric times. 

What oxidation states are exhibited by the platinum metals— analogues of the iron family elements In what are they similar to iron, cobalt, and nickel ... 

What position is occupied by the iron family elements in the electrochemical series of the metals How do they react with water, acids, and alkalies Write the equations of the reactions of iron with dilute and concentrated hydrochloric, sulphuric, and nitric acid solutions in the cold and with heating. 

The discovery of a highly active family of catalysts based on iron, a metal that had no previous track record in this field, has highlighted the possibilities of further new catalyst discoveries. The search for new catalysts be restricted to metals that have a history of giving polymerization-active centers was no longer needed. The LTMs especially are likely to provide fertile ground for future development, and the greater functional group tolerance of the LTMs also offers the attractive prospect of polar co-monomer incorporation. A relatively small amount of functionality can dramatically transform the adhesion and wettability properties of polyolefins more heavily functionalized products offer the prospect of materials with totally new properties and performance parameters. It is clear that, for olefin polymerization catalysis, the process of catalyst discovery and development is far from over. 

This family includes alloys based on transition metals, such as nickel, iron, cobalt, and palladium. ... 

As a possible method of concentrating trace amounts of bioactive organic compounds occurring in the hydrosphere, adsorption properties of various compounds have been explored by employing hydrous metal oxides as the adsorbents. To date, a family of organophosphoms compounds and carbonic acids were adsorbed onto hydrous iron oxide, along with the adsoi ption of monosaccharides onto hydrous zirconium oxide. 

This strategy has been found to be more efficient than using Gaussian functions and has now been used to extend the NDDO-based family of methods to the remaining main group elements [22], the AMI parameterisation of second row elements [39] and the transition metals titanium and zirconium [40] as well as our work extending the PM3 method to iron [26, 32],... 

It has been shown that boratabenzenes can provide the framework for a new family of stable, 19-electron iron-sandwich complexes. For example, treatment of (C6Me6)FeCp with MeBBr2 leads to insertion to furnish the corresponding r 6-boratabenzene adduct (Scheme 18).33 The structures, EPR spectra, and reactivity of these boratabenzene complexes are very similar to their well-studied (arene)Fe(cyclopentadienyl) precursors. The unpaired electron resides in an antibonding orbital that is largely metal based. 

It has been suggested (Bozzi et ah, 1997 Grant et ah, 1998) that Dps and E. inocua ferritin represent examples of a family of ancestral dodecameric protein which had as function to trap, but not to mineralize, metal ions, and that the ability to oxidize and mineralize iron efficiently and to form fourfold interactions came later. The hollow-cored dodecameric motif exemplified by Dps and E. inocua ferritin has clearly been adapted to a number of functions, since in addition to DNA binding and iron storage, other family members include a novel pilin, a bromoperoxidase and several other proteins of unknown function (Grant et ah, 1998). 

---