The present volume describes organoberyllium compounds containing at least one berylli um-carbon bond, except the beryllium carbides and cyanides. It covers the literature com pletely to the end of 1986 and includes most of the references up to mid-1987. This Gmelin volume is different from all other volumes of the series on organometallic compounds in that it is dedicated to an area of research which has virtually come to a complete standstill. Organoberyllium chemistry has never been a very popular field, and only few workers have contributed to its slow growth, as is seen by the relatively small number of publications in the field. This very modest development became stagnant in the early 1970's and was followed by a rapid decline. This exceptional fate of a branch of organometallic chemistry is only partly due to the very limited number of potential application~ of beryllium and its compounds. The compounds of this element are, in principle, at least as interesting and intriguing to scientists as those of other metals in the Periodic Table. No doubt the main reason for the apparent ban of all experimental organoberyllium chemistry is to be found in the established, and alleged, hazardous properties of beryllium compounds. Although similar hazards have been established for other organometallics where active research is still in process, e. g. , mercury and lead, these observations were absolutely lethaI for organoberyllium research.

The present volume continues the description of the chemical reactions of eiemental tungsten started with "Tungsten" Suppl. Vol. A 7. It covers the reactions with the metallic elements from zinc to actinoids. The treatment includes phase diagrams, bulk reactions, and surface processes which again are of outstanding importance in most systems. The raader is referred to the introductory remarks on pp. X/XI. Frankfurt am Main Ernst Koch November 1987 Introductory Remarks Abbreviations In order not to overload the text, the following abbreviations are sometimes used without definitions in the present volume, in addition to the abbreviations usual in the Gmelin Handbook. a. c. alternating current AE Auger electron Auger electron spectroscopy(ic) or spectrum AES bcc body-centered cubic CPD contact potential difference counts per second cps d. c. direct current DTA differential thermoanalysis Fermi Ievel EF EI electron impact ELS electron energy loss spectroscopy or spectrum EMF, emf electromotive force fcc face-centered cubic FE field emission field electron (emission) microscope(ic) FEM FES field emission spectroscopy FIM field ion microscope(ic) F-N Fowler-Nordheim hcp hexagonal close-packed 6 L Langmuir=1·10- Torr·s LEED low energy electron diffraction monolayer ML PES photoelectron spectroscopy PSD photon-stimulated desorption RHEED reflection high energy electron diffraction room temperature RT SI secondary ion SIMS secondary ion mass spectrometry TDS thermal desorption spectroscopy(ic) or spectrum TE thermionic emission total energy distribution TED UHV ultra-high vacuum UPS ultra-violet photoelectron spectroscopy(ic) or spectrum XPS X-ray photoelectron spectroscopy(ic) or spectrum Gmelin Handbock WSuppl. Vol.

The present volume contains all compounds in which at least one indium-carbon bonding interaction can be assumed. The compilation starts with the simplest compound of trivalent indium, In(CHh, and ends with studies about the interaction of indium with carbon monoxide 3 in an argon matrix. Literature coverage is intended to be complete to spring 1991 with various examples up to September 1991. The arrangement is closely related to that of the organogallium volume and documents the similarities between the two elements. Following the indium triorganyls and their adducts with Lewis bases in Section 1, the broad field of compounds of the general type R ln- n 3 n (n = 1, 2) is treated in sections 2 to 9; X represents a ligand bonded with a non-carbon atom to the indium atom. The arrangement of the various ligands follows the order group 17, 16, 15, etc. elements, with few compounds having direct indium-transition metal bonds. Ionic species, predominantly [R lnX -n]-compounds (n = 1 to 4), close the series of trivalent n 4 organoindium compounds and are collected in Section 11. Compounds of formally low valent indium (In", Ini, and Ino), with one R 1nlnR species having an In-In bond, form Section 12; 2 2 an extended chapter therein is dedicated to the young area of Cp*ln compounds in which i formalln is coordinated in an T] 5 manner.