IUPAC ligands

The coordinated ligand is called rj6-boratabenzene by Chemical Abstracts however, as ligands in sandwich-type complexes should be named as neutral entities according to the IUPAC rules, Tj6-bora-3,5-cyclo-hexadien-2-yl would be the correct name. For the sake of simplicity we prefer boratabenzene in the following. 

Divinyl sulfide, 25 630 Divinylsulfone method, for covalent ligand immobilization, 6 3961 Division of Chemical Nomenclature and Structure Representation (IUPAC),... 

Figure 1. Three-dimensional structure of cryptand [2.2.2] complex with metal M+. The IUPAC name for this ligand is 4,7,13,16,21,24-hexaoxa-l,10-diazabicyclo-[8.8.8] hexaxosane.

Some redox couples of organometallic complexes are used as potential references. In particular, the ferrocenium ion/ferrocene (Fc+/Fc) and bis(biphenyl)chromium(I)/ (0) (BCr+/BCr) couples have been recommended by IUPAC as the potential reference in each individual solvent (Section 6.1.3) [11]. Furthermore, these couples are often used as solvent-independent potential references for comparing the potentials in different solvents [21]. The oxidized and reduced forms of each couple have similar structures and large sizes. Moreover, the positive charge in the oxidized form is surrounded by bulky ligands. Thus, the potentials of these redox couples are expected to be fairly free of the effects of solvents and reactive impurities. However, these couples do have some problems. One problem is that in aqueous solutions Fc+ in water behaves somewhat differently to in other solvents [29] the solubility of BCr+BPhF is insufficient in aqueous solutions, although it increases somewhat at higher temperatures (>45°C) [22]. The other problem is that the potentials of these couples are influenced to some extent by solvent permittivity this was discussed in 8 of Chapter 2. The influence of solvent permittivity can be removed by... 

Docking studies are molecular modeling studies aiming at finding a proper fit between a ligand and its binding site (IUPAC). 

A heteroreceptor is a receptor regulating the synthesis and/or the release of mediators other than its own ligand (IUPAC). 

E. Hogfeldt, Stability Constants of Metal-Ion Complexes. Part A Inorganic Ligands , IUPAC Chemical Data Series, No. 21, Pergamon, Oxford, 1982. 

Unfortunately the name phosphorane according to IUPAC (and Chemical Abstracts) nomenclature is not restricted to phosphorus compounds with five covalent bonded ligands,... 

This chapter presents a concise overview of the present conventions in coordination nomenclature. Generally, the IUPAC rules and recommendations have been followed. For the cases where the IUPAC practices seemed to be out of date or incomplete, the author has drawn upon the vast expertise in nomenclature available at Chemical Abstracts Service. Sections 3.2.3 and 3.4 deal with ligand locant notation and the numbering of polynuclear complexes may be considered provisional. These concepts are still under active consideration in the various national and international nomenclature commissions and committees. The presentation is relatively brief, but it is hoped that the nomenclature principles are evident, especially when examples presented are closely... 

Formula IUPAC prefix Prefix used Ligand name Model compound References... 

The term iodane refers to hydrogen iodide (HI), a colorless non-flammable gas. According to IUPAC rules, compounds with nonstandard bonding number are shown by the lambda notation thus, H3I is called A3-iodane and H5I A5-iodane. The most common ArIL2 (L heteroatom ligands) with decet structure is named aryl-A3-iodane and ArIL4 with dodecet structure aryl-A5-iodane. 

L. G. Sillen, and A. E. Martell, Stability Constants of Metal Ion Complexes, Spec. Publ. Nos. 17 and 25. Chemical Society, London, 1964 and 1971 E. Hogfeldt, Stability Constants of Metal Ion Complexes, Part A, Inorganic Ligands, IUPAC Chem. Data Ser., No. 21. Pergamon, Oxford, 1982. Chem. Data Ser., No. 21. Perga-mon, Oxford, 1982. 

According to the latest IUPAC Convention the names of ligands surrounding the central metal atom are written in alphabetical order of preference irrespective of whether they are negative or neutral. For example, in the complex [Co(NH3)4 C1(N02)], the ligands are named in the order ammine, chloro and... 

Fig. 35 Molecule IUPAC names using nested sequence of integers and ligands...

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