Valency and Molecular Structure, Fourth Edition provides a comprehensive historical background and experimental foundations of theories and methods relating to valency and molecular structures. In this edition, the chapter on Bohr theory has been removed while some sections, such as structures of crystalline solids, have been expanded. Details of structures have also been revised and extended using the best available values for bond lengths and bond angles. Recent developments are mostly noted in the chapter on complex compounds, while a new chapter has been added to serve as an introduction to the spectroscopy of complex compounds. Other topics include the experimental foundation of the quantum theory; molecular-orbital method; ionic, hydrogen, and metallic bonds; structures of some simple inorganic compounds; and electronic spectra of transition-metal complexes. This publication is a useful reference for undergraduate students majoring in chemistry and other affiliated science subjects.

The first modernized overview of chemical valency and bonding theory, based on current computational technology.

The elaboration of linguistic theories depends on the existence of adequate descriptions of particular languages; otherwise theories will be poorly grounded on empirical data. This book starts from theoretical points of wide acceptance among linguists and goes on to present a descriptive metalanguage, able to express the facts of verb valency, which constitute one of the core areas in linguistic description. Most of the data come from an extensive survey under way of the valency of Portuguese verbs; but the present work’s relevance goes well beyond that, and incorporates a proposal applicable to other European languages, illustrated by the wealth of English examples included in the exposition. Among the topics discussed are the syntactic component of constructions (following here a proposal recently published in Culicover and Jackendoff’s Simpler Syntax); delimitation and definition of semantic roles; the role of linking rules and their relation to prototypes; and the connection between linguistic expressions and cognitive units such as frames and schemata. The result is a notational system flexible and robust enough to describe all aspects of verb valency.

In recent years, research on valency has led to important insights into the nature of language. Some of these findings are published in this volume for the first time with up-to-date accounts of language description and new reflections on language, above all for English and German. The volume also presents examples of contrastive analysis, which are of use for all those who deal professionally with these two languages. Furthermore, the articles in the psycholinguistic and computational linguistics section demonstrate the applicability and value of valency theory for these approaches and shed light on a fruitful cooperation between theoretical and descriptive linguistics and applied disciplines. The papers cover the following aspects of valency analysis: (i) theoretical aspects of the valency approach in relation to related theories of complementation (dependency syntax, FrameNet, case roles), (ii) descriptive aspects of valency and complementation, (iii) valency as a concept for the description of cognitive processes in syntactic processing, (iv) contrastive aspects of valency, above all for English and German, and (v) possible computational applications of the valency concept in fields such as automatic syntactic recognition or language processing. The volume combines papers of representatives from different linguistic schools on the topic of complementation. One of the aims is to show how concepts developed for the analysis of one language, in the case of valency often German, can be applied to other languages such as English.

Dr Palmer examines the chronological stages to the development of the concept of valency up to 1930.