Nomenclature, for coordination

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. 

Complex ions combine with cations or anions to form coordination complexes. These complex ions usually consist of a transition metal ion attached to ligands. You should be familiar with the basic nomenclature for coordination complexes. 

Any scheme of nomenclature for coordination compounds should offer a broad general pattern capable of wide extension. These rules provide suitable names for compounds to which this pattern of nomenclature has not been applied previously. 

Along with the theory of coordination, Werner proposed5 a system of nomenclature for coordination entities which not only reproduced their compositions but also indicated many of their structures. Werner s system was completely additive in that the names of the ligands were cited, followed by the name of the central atom (modified by the ending ate if the complex was an anion). Wemer also used structural descriptors and locants. The additive nomenclature system was capable of expansion and adaptation to new compounds and even to other fields of chemistry. 

The last four examples that we have provided illustrate that while a good start has been made toward a rational nomenclature for coordination compound stereochemistry, many challenges still remain. 

This is an additive nomenclature, and just as organic chemists have developed substitutive nomenclature in parallel with the methodology of substitutive chemistry, inorganic chemists have developed a nomenclature for coordination compormds that arises from the formal assembly of a... 

A Macromolecular Division of lUPAC was created in 1967, and it created a permanent Commission on Macromolecular Nomenclature, parallel to the other nomenclature commissions. The Commission over the years has issued recommendations on basic definitions, stereochemical definitions and notations, stmcture-based nomenclature for regular single-strand organic polymers and regular single-strand and quasisingle-strand inorganic and coordination polymers, source-based nomenclature for copolymers, and abbreviations for polymers. AH of these are coUected in a compendium referred to as the lUPAC Purple Book (99). 

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. 

Nomenclature for regular single-strand and quasi-single-strand inorganic and coordination polymers (Provisional), Pwre Chem. 53, 2283-2302 (1981). Superseded by Ref 17. 

Coordination nomenclature for oxoadds, oxoanions and related compounds... 

IUPAC, Nomenclature for Regular Single-Strand and Quasi-Single-Strand Inorganic and Coordination Polymers ,... 

The conversion from a connection table to other unambiguous representations is substantially more difficult. The connection table is the least structured representation and incorporates no concepts of chemical significance beyond the list of atoms, bonds, and connections. A complex set of rules must be applied in order to derive nomenclature and linear notation representations. To translate from these more structured representations to a connection table requires primarily the interpretation of symbols and syntax. The opposite conversion, from the connection table to linear notation, nomenclature, or coordinate representation first requires the detailed analysis of the connection table to identify appropriate substructural units. The complex ordering rules of the nomenclature or notation system or the esthetic rules for graphic display are then applied to derive the desired representation. 

Hydrolysis and condensation reactions of silanes may be considered in the broad category of nucleophilic substitutions at silicon. The common nomenclature for these reactions is SN.V-Si, where A represents the kinetic order or molecularity, Si indicates that silicon is the reaction center, and SN indicates that the reaction is a nucleophilic substitution. Nucleophilic reactions at silicon have been reviewed thoroughly and have been the subject of fundamental studies by several laboratories over the last three decades [33]. The literature is not as voluminous as the literature on the corresponding reactions at carbon. A general mechanistic view of these reactions has, however, emerged. There are many parallels to carbon-centered reaction mechanisms. One distinction from carbon-centered reactions is clearly apparent. Silicon is able to form relatively stable higher coordinated (pentavalent) intermediates carbon is not [33]. 

According to the most recent IUPAC nomenclature, the R/S nomenclature may also be used with trigonal pyramidal TPY-3 structures. For TPY-3 structures, the vacant coordination site may be considered to be occupied by a lone pair of electrons or a phantom atom and given lowest priority. In Figure 5.4, we illustrate the use of this nomenclature for ethylmethyphenyltelluronium ion.18... 

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 ... 

The resistance formulation is also useful for numerical solution of complicated three-dimensional shapes. The volume elements for the three common coordinate systems are shown in Fig. 3-11, and internal nodal resistances for each system are given in Table 3-3. The nomenclature for the (m, rt, k) subscripts is given at the top of the table, and the plus or minus sign on the resistance subscripts designates the resistance in a positive or negative direction from the central node (m, n, k). The elemental volume AV is also indicated for each... 

The correlation of the primitive cos and sin forms with established nomenclature for medium-sized rings is summarized in table 2. In practice the procedure is to start from atomic coordinates and to generate puckering displacements, which are converted to puckering amplitudes and phases, and finally decomposed into a linear sum of primitive contributions ... 

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