Record Nr.

UNINA9910146238003321

Titolo

Molecular clusters of the main group elements / / Matthias Driess, Heinrich Nöth, (eds.)

Pubbl/distr/stampa


Weinheim, [Germany] : , : Wiley-VCH Verlag GmbH & Co. KGaA, , 2004
©2004

ISBN

1-280-56087-8

9786610560875

3-527-61437-0

3-527-60244-5

Descrizione fisica

1 online resource (462 p.)

Disciplina

539.6

541

Soggetti

Microclusters

Chemical elements

Electronic books.

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Note generali

Description based upon print version of record.

Nota di bibliografia

Includes bibliographical references at the end of each chapters and index.

Nota di contenuto

Molecular Clusters of the Main Group Elements; Contents; Preface; List of Contributors; 1 Theory and Concepts in Main-Group Cluster Chemistry; 1.1 Introduction; 1.1.1 Three-center Bonding in Boranes: Lipscomb's Equations of Balance; 1.1.2 Polyhedral Skeletal Electron Pair Theory: The Wade-Mingos Rules; 1.1.3 Aromaticity in Three-dimensional Clusters; 1.1.3.1 From Polygonal Aromatics to Deltahedral Boranes; 1.1.3.2 Interstitial Polygonal Aromatic-Deltahedral Borane Relationships; 1.1.3.3 Aromaticity Evaluations of Three-dimensional Structures: Nucleus-Independent Chemical Shift (NICS)

1.1.3.4 Spherical Aromaticity1.1.4 Bare Ionic Post-transition Metal Clusters: The Zintl Phases; 1.1.5 Clusters of the Heavier Group 13 Metals; 1.1.5.1 Apparently Hypoelectronic Deltahedra in Bare Clusters of Indium and Thallium: Polyhedra with Flattened Vertices; 1.1.5.2 Organometallic Deltahedral Clusters of the Heavier Group 13 Metals and More Complicated Structures Derived from Deltahedra; 1.1.5.3

Giant Aluminum Clusters with Shell Structures Consisting of Nested Polyhedra: Pieces of Icosahedral Quasicrystals; 1.1.6 Conclusion and Outlook; References; 2.1 Homonuclear Boron Clusters

2.1.1 Introduction2.1.2 General Principles and Systematic Naming; 2.1.2.1 Structures and Bonding; 2.1.3 Synthetic Methods; 2.1.3.1 Diborane Pyrolysis; 2.1.3.2 The Anionic Route; 2.1.3.3 Platinum-catalyzed Dehydrocoupling; 2.1.3.4 Cluster Expansion and Cluster Contraction Reactions; 2.1.4 Chemistry of Selected Polyboranes; 2.1.4.1 Chemistry of Triborane B(3)H(7); 2.1.4.2 Chemistry of Tetraboranes; 2.1.4.2.1 arachno-Tetraborane(10); 2.1.4.2.2 Derivatives of nido-Tetraborane(8), B(4)H(8), and closo-Tetraborane(6), B(4)H(6); 2.1.4.3 Chemistry of Pentaborane(9); 2.1.4.4 Chemistry of Decaborane(14)

2.1.5 Chemistry of Selected nido- and closo-Polyborane Anions2.1.5.1 Chemistry of closo-B(6)H(6)(2-); 2.1.5.2 Chemistry of the Nonahydro-closo-nonaborate(2-); 2.1.5.3 Reaction of Decahydro-closo-decaborate(2-); 2.1.5.4 Chemistry of the nido-Decaborate B(10)H(13)(-); 2.1.5.5 Chemistry of Undecahydro-closo-undecaborate B(11)H(11)(2-); 2.1.5.6 Chemistry of the Dodecahydro-closo-dodecaborate; 2.1.5.6.1 Protonation and Alkylation of B(12)H(12)(2-); 2.1.5.6.2 Halogeno-, Hydroxo-, Alkoxo- and Amine closo-dodecaborates; 2.1.5.7 Chemistry of B(20)H(18)(2-) Anions

2.1.6 Substituted Neutral Polyboranes of Type B(y)X(y)2.1.6.1 Overview; 2.1.6.2 Structures; 2.1.6.3 Synthesis; 2.1.6.4 Reactions; References; 2.2 Boron Clusters in Medical Applications; 2.2.1 Introduction; 2.2.2 Dicarba-closo-dodecaborane, C(2)B(10)H(12), and Derivatives; 2.2.2.1 Preparation and Reactions of C(2)B(10) Cage Compounds; 2.2.2.2 Design and Classification of BNCT Reagents Containing C(2)B(10) Cages; 2.2.2.3 Amino Acids; 2.2.2.4 Nucleic Acid Precursors; 2.2.2.5 DNA Binders; 2.2.2.6 Porphyrins; 2.2.2.7 Combination of C(2)B(10) and Gadolinium-containing Species

2.2.3 Derivatives of the nido-carborane C(2)B(9)H(12)(2-)

Sommario/riassunto

With more than 20 contributions from leading research groups, this book provides essential information for chemists and materials scientists working with molecular clusters. It treats both homonuclear and heteronuclear clusters, including:the theory and concepts in main-group cluster chemistry, * novel boranes and heteroboranes, * silicon/germanium/tin clusters, * alkali metal suboxides, * clusters in alloys with mercury, * chalkogen clusters* and numerous other compound classes. The whole is illustrated by examples of the great potential for technical appli

Record Nr.

UNINA9910709681103321

Autore

Colman Steven M.

Titolo

Weathering rinds on andesitic and basaltic stones as a Quaternary age indicator, western United States / / by Steven M. Colman and Kenneth L. Pierce

Pubbl/distr/stampa


Washington : , : United States Department of the Interior, Geological Survey, , 1981

Descrizione fisica

1 online resource (iv, 56 pages) : illustrations, map

Collana

Geological Survey professional paper ; ; 1210

Soggetti

Geology, Stratigraphic - Quaternary

Weathering - West (U.S.)

Andesite - West (U.S.)

Basalt - West (U.S.)

Andesite

Basalt

Geology, Stratigraphic

Quaternary Geologic Period

Weathering

United States, West