Organotin Carboxylate and Sulfonate Clusters

Vadapalli Chandrasekhar, Puja Singh, and Kandasamy Gopal Department of Chemistry, Indian Institute of Technology, Kanpur, India 

Organotin carboxylates and sulfonates form an important class among the family of organotin compounds.These compounds possess rich structural diversity. A range of structures from simple mononuclear compounds to complex polynuclear cages and clusters are formed. The structural diversity of these compounds emanates from several features. These include  

The theme of this chapter revolves around clusters of organotin carboxylates and sulfonates. For the sake of completion other structural types are mentioned briefly. 

Among organotin carboxylates, clusters and cages are formed mainly in di- and monoorganotin compounds. Among triorganotin carboxylates, the predominant structures are chain and discrete structures, although some macrocycles are also known.  

Triorganotin carboxylates, R3Sn02CR, formed generally in the reactions of RsSnOH or (R3Sn)20 with a carboxylic acid R C02H, usually possess two main types of structures (a) chain structures (b) discrete structures. 

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Organotin Carboxylate and Sulfonate Clusters 101 Table 2.4.2 Representative examples of trinuclear diorganostannoxane macrocycles... 

Advances in techniques include sophisticated NMR methods, both in solution and the solid-state, and computational methods, and these, coupled with X-ray diffraction and other established methods, have been applied to the study of a wide variety of structures. Topics covered in the book include Sn(II) clusters, tin Zintl ions, Sn(II) heterobimetallic compounds, RsSn+ cations, stannylenes (R2Sn ), stannenes (R2Sn=SnR2 and R2Sn=CR2), stannynes (RSn=SnR), organotin oxide, carboxylate and sulfonate clusters, dendrimers and macrocycles, organotin polymers, Sh-tt interactions, unusual bondings and structures, and compounds with non-linear optical properties. 

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