Coordination compounds, inorganic nomenclature

Esters. Esters of inorganic acids are named as the salts for example, ( 113)2804, dimethyl sulfate. However, if it is desired to specify the constitution of the compound, the nomenclature for coordination compounds should be used. 

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 system is additive and was developed originally to name coordination compounds, although it can be used in other circumstances when appropriate. For a discussion, see the Nomenclature of Inorganic Chemistry, Chapter 10. The compound to be named is considered as a central atom together with its ligands, and the name is developed by assembling the individual names of the constituents. This system has also been applied to name oxoacids and the related anions. Coordination names for oxoanions are cited in the examples throughout the text, and they are presented in detail in Section 4.4.5 (p. 69). 

Coordination nomenclature. This is an additive system for inorganic coordination compounds which treats a compound as a combination of A central atom wiih associated ligands (see Section 1-10). 

Next, one should note that the same protocol that had been developed in the proposed nomenclature for "organic" compounds is readily applied to coordination compounds in inorganic chemistry namely, the monocyclic compound which I.U.P.A.C. calls dichloro[N,N-dimethyl-2,2 -thiobis(ethylamine) -S,N ]platinum (II) (Figure 20), may be named, without resorting to different prefixes for the number two (di- and bis-) and without the prime symbol, as ... 

Having introduced the most common prefix of IUPAC inorganic nomenclature, (p) in the previous example, another "typical" inorganic coordination compound, Fe2(CO)9, is presented as Figure 20. The names assigned to this compound are ... 

Fernelius, W. C. Nomenclature of Coordination Compounds from Advances In Chemistry Series, No. 8, 9-37, American Chemical Society (1953). International Union of Pure and Applied Chemistry Nomenclature of Inorganic Chemistry, J. Am. Chem. Soc82, 5523 (1960). 

ACS Symposium, 1951. As part of the program of the ACS meeting at the time of the lUPAC meeting in New York, a symposium on nomenclature was held. The nomenclature of coordination compounds was discussed in relation to general inorganic nomenclature (10). Rules 1-16 were presented and discussed at that time. A few items are worthy of mention ... 

So far, we have identified coordination compounds only by their chemical formulas, but names are also useful for many purposes. Some substances were named before their structures were known. Thus, K3[Fe(CN)g] was called potassium fer-ricyanide, and K4[Fe(CN)g] was potassium ferrocyanide [these are complexes of Fe (ferric) and Fe (ferrous) ions, respectively]. These older names are still used conversationally but systematic names are preferred to avoid ambiguity. The definitive source for the naming of inorganic compounds is Nomenclature of Inorganic Chemistry-IUPAC Recommendations 2005 (N. G. Connelly and T. Damhus, Sr., Eds. Royal Society of Chemistry, 2005). 

Nomenclature of Coordination Compounds and Its Relation to General Inorganic Nomenclature... 

The pattern of chemical combination represented by coordination compounds is one of common occurrence. The adoption of a basic plan of nomenclature for this fundamental pattern of chemical combination is desirable. The basic philosophy underlying the various schemes for the naming of coordination compounds is reviewed briefly. The causes of apparent contradictions are discussed. The practices for the nomenclature of coordination compounds suggested by the Commission on the Reform of Inorganic Chemical Nomenclature of the International Union of Chemistry (1940) previously were formulated into a set of rules (1948). These rules are now modified in the light of criticism and further study and are extended to cover situations not previously included. Examples are given to show how the practices prescribed by the rules may be extended. 

Comment. This rule is simply an attempt to adapt the best organic nomenclature practices to coordination compounds. Difficulty arises because those who have worked with optically active inorganic compounds almost invariably have used d- and l- to designate the sign of rotation of the coordinated group and large capitals D and L for the sign of rotation of the coordination entity. 

Additive nomenclature treats a compound or species as a combination of a central atom or central atoms with associated ligands. The particular additive system used for coordination compounds (see Chapter IR-9) is sometimes known as coordination nomenclature although it may be used for much wider classes of compounds, as demonstrated for inorganic acids (Chapter IR-8) and organometallic compounds (Chapter IR-10) and for a large number of simple molecules and ions named in Table IX. Another additive system is well suited for naming chains and rings (Section IR-7.4 see Example 6 below). 

Nomenclature of Coordination Compounds, T.E. Sloan, Vol. 1, Chapter 3, Comprehensive Coordination Chemistry, Pergamon Press, 1987 Inorganic Chemical Nomenclature, Principles and Practice, B.P. Block, W.H. Powell and W.C. Fernelius, American Chemical Society, Washington, DC, 1990 Chemical Nomenclature, KJ. Thurlow, Kluwer Academic Pub., 1998. 

Stan s some one hundred articles dealt with the synthesis, structure, stereochemistry, and biological properties of coordination compounds, including the anticancer activity of platinum complexes optical rotatory dispersion circular dichroism the Pfeiffer Effect in metal complexes inorganic nomenclature and the application of computer techniques to chemical and information problems. A prominent educator, he edited three books on inorganic and coordination chemistry. 

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