Structural chemistry arsenates

The structural chemistry of some metal dithiocarbamates, i.e. systematics, coordination modes, crystal packing, and supramolecular self-assembly patterns of nickel, zinc, cadmium, mercury,363 organotin,364 and tellurium,365 366 complexes has been thoroughly analyzed and discussed in detail. Supramolecular self-assembly frequently occurs in non-transition heavier soft metal dithiocarbamates. Thus, lead(II),367 bismuth(III)368 zinc,369 cadmium,370 and (organo)mercury371 dithiocarbamates are associated through M- S secondary bonds, to form either dimeric supermolecules or chain-like supramolecular arrays. The arsenic(III)372 and antimony(III)373 dithiocarbamates are... 

Arsenic Inorganic Chemistry Borides Solid-state Chemistry Carbides Transition Metal Solid-state Chemistry Chalcogenides Solid-state Chemistry Electronic Structure of Solids Mixed Valence Compounds Phosphoras Inorganic Chemistry Thin Film Synthesis of Solids Zintl Compounds. 

Structural chemistry of organic compounds containing arsenic, antimony and bismuth... 

The oxygen chemistry of pentavalent antimony was formerly very perplexing, and many compounds-some anhydrous, some hydrated-were described as ortho-, meta-, and pyro-antimonates and were assigned formulae analogous to those of phosphates. As a result of the study of the structures of many of these crystalline compounds it is found that their structural chemistry is very simple and quite different from that of phosphates, arsenates, and vanadates, being based not on tetrahedral but on octahedral coordination of Sb by oxygen. Many of the old formulae require revision. The compounds in question fall into two main groups ... 

Felbeck, G.T., Jr. 1965. Structural chemistry of soil humic substances. Adv. Agron. 17 327-368. Ferguson, J.F., and J. Gavis. 1972. A review of the arsenic cycle in natural waters. Water Res. 

B5.1 Structural chemistry of transition metal complexes with arsenic-arsenic bonds... 

Besides immediate practical applications in fields such as drug design, molecular surfaces contribute to the transformation of modernizing the conceptual arsenal of chemistry, long dominated by line drawings of chemical bonds of structural formulas. Molecular surfaces have led to a true appreciation of the three-dimensional aspects of molecules, important in all branches of chemistry. Precise methods for the analysis of the shapes of these surfaces are available using the topological shape codes and provide tools for the numerical evaluation of such elusive but important properties as measures of molecular similarity and shape complementarity. 

There are many common features to the structural chemistry of rare earth compounds formed by the tetrahedral oxoanions RXO4, where X is a pentavalent element (P, As, V, Cr). Nevertheless, considerably less structural and other information is available for the rare earth arsenates than for the phosphates and vanadates. 

Dechnicke K, Shihada A-F (1976) Structural and Bonding Aspects in Phosphorus Chemistry-Inorganic Derivates of Oxohalogeno Phosphoric Acids. 28 51-82 Denning RG (1992) Electronic Structure and Bonding in Actinyl Ions. 79 215-276 Dhubhghaill OMN, Sadler PJ (1991) The Structure and Reactivity of Arsenic Compounds. 

Fendorf S, Eich MJ, Grossl P, Sparks DL (1997) Arsenate and chromate retention mechanisms on goethite. 1. Surface structure. Environ Sci Technol 31 315—320 Francesconi KA, Kuehnelt D (2002) Arsenic compounds in the environment. In Environmental chemistry of arsenic. In Frankenberger WT Jr (ed) Marcel Dekker, New York, Chapter 3, pp 51-94... 

As well as sulfur, macrocycles containing other large donors such as tertiary phosphorus or arsenic atoms are also known, although the metal-ion chemistry of such ligands has been somewhat less explored. In part, this reflects the synthetic difficulties often encountered in the preparation of ligands containing these heteroatoms structures (49) (Horner, Walach Kunz, 1978), (50) (Kauffmann Ennen, 1981), and (51) (Mealli etal., 1985) provide three representative examples of such macrocycles. 

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