The Chemistry of Astatine

  title={The Chemistry of Astatine},
  author={A. Aten},
  journal={Advances in Inorganic Chemistry and Radiochemistry},
  • A. Aten
  • Published 1964
  • Chemistry
  • Advances in Inorganic Chemistry and Radiochemistry
Publisher Summary This chapter highlights the chemical study of astatine. Astatine, as the heaviest member of the family of halogens, forms a number of compounds in which the element has different valencies and which does not readily interchange. This means that a fairly large amount of chemical information will eventually become available. A very large number of astatine isotopes are now known. Their half-lives and decay energies, both for α emission and for electron capture are of great… Expand
Astatine: Its Organonuclear Chemistry and Biomedical Applications
Publisher Summary Astatine, the fifth and heaviest member of the Periodic Table Group VIIB (the halogens), is the earth's rarest naturally occurring element. Many aspects of the nuclear physics, andExpand
Chemical Behavior and Compounds of Astatine
In spite of its limited availability and the many difficulties connected with the experimental handling of astatine there is a continuous interest in the chemistry of the element since its discoveryExpand
Analytical Chemistry of Astatine
Astatine (At), element 85, has no stable isotopes. Its longest-lived isotope, 210At, has a half-life of only 8.3 h and a specific activity of 1.8 Ci/µg. Consequently, studies of At chemistry haveExpand
Reactivity and Selectivity of the Astatine Interhalogen Compounds AtCI and AtBr Towards Simple Aromatic Substrates
Abstract The reacthrity of the astatine interhalogen CompoundsAtCl and " ' AtBr towards aromatic substrates such as benzene, halobenzenes C,HjX(X= F, Cl, Br), toluene, phenoland aniline has beenExpand
General Properties of Astatine
Only a very limited amount of direct evidence is available concerning the properties of astatine because it occurs naturally in trace amounts. In view of this, most of the data for astatine have beenExpand
The mechanism of the reaction of elementary astatine with organic solvents
The mechanism of the reaction of elementary astatine with benzene, toluene and monochlorobenzene were studied by means of radiogaschromatography. The reaction proceeds in two steps with benzene andExpand
Production, Isolation, and Purification of Astatine Isotopes
When astatine is needed for chemical or medical research, it is most conveniently produced by the bombardment of bismuth with accelerated helium ions. This reaction yields At isotopes with half-livesExpand
Recent Advances in the Organic Chemistry of Astatine
1 Introduction 2 Physical and Chemical Properties of Astatine 3 Synthesis and Identification of Organic Astatine Compounds 4 Physicochemical Properties of Organic Astatine Compounds 5Expand
Syntheses of astato compounds by melt method
m-Astatobenzoic acid (2) methyl m-astatobenzoate (3), and m-astatohippuric acid (4) were synthesized by the melt method. Reaction of methyl m-bromobenzoate with astatide at 200°C gave methylExpand
Relativistic Effects and the Chemistry of the Heaviest Main-Group Elements.
This chapter reviews possible experimental aspects of relativistic effects in heavier Main Group elements and their compounds. Attention is focused on the sixth, sev- enth and eighth Period elements,Expand


Chemical Properties of Astatine. I
This work is a report on studies of the chemistry of astatine on a tracer scale, using the various methods of tracer chemistry. A general discussion of preparation of materials and analytical methodsExpand
Solvent distribution studies of the chemistry of astatine
Abstract Certain aspects of the chemistry of the positive oxidation states of astatine have been investigated by solvent distribution studies. The existence of a chlorocomplex, probably AtCl2−, hasExpand
Some Observations on the Chemical Behavior of Iodine at Low Concentrations
An investigation has been made of the chemical forms assumed by I131 initially in the form of iodide ion at low concentration (the order of 10−7 M) when it is oxidized under various conditions.Expand
The induction of tumors in the rat by astatine-211.
Exposure of rats to sublethal amounts of At/sup 211/ results in the early appearance of large numbers of mammary tumors, many of them malignant, and in the production of an altered functional stateExpand
Technetium and Astatine Chemistry
The chemistry of technetium and astatine is reviewed relative to crystal structure, oxidation states, and analytical behavior. (C.J.G.)
Relative nuclidic masses
Abstract The accompanying mass table gives a omplete and consistent list of nuclidicasses, and also a few derived quantities.
Dipyridine complexes of astatine salts