Cadmium xanthate

There exists a variety of Lewis base adducts of cadmium xanthates containing different donor atoms and ligands of varying denticity. The bis(pyridine)... 

S2 Cd distance of 2.765(1) A (i.e., a separation shorter that the chelate Cd S4 distance underlying the strength of the bridge). Completing the approximately octahedral coordination geometry about the cadmium atom is the S6 atom of the thione ligand Cd S6 2.641(2) A. The remaining cadmium xanthate adducts contain bidentate Lewis bases. 

By contrast to the zinc and cadmium xanthates, for which organoelement xanthate structures are not known, there exists a rich structural chemistry of organomercury xanthates. 

Single source precursor Cadmium xanthates, ammonia 5.60-3.71 [207]... 

Block, M. and Part, P. (1986). Increased availability of cadmium to perfused rainbow trout (Salmo gairdneri, Rich) gills in the presence of the complexing agents diethyl dithiocarbamate, ethyl xanthate and isopropyl xanthate, Aquat. Toxicol., 8, 295-302. 

Insoluble starch xanthate (ISX) releases magnesium and takes up heavy metals. There are also a number of proprietary chemicals developed by various companies (e.g. Environmental Technology of Sanford, Florida) for removal of complexed copper, silver (from photographic process wastes), arsenic, nickel, lead, mercury, zinc, cadmium, barium, and other heavy metals. 

Preparation of an ultrasonic slurry of the sample is occasionally used, as for example in the determination of cobalt, nickel and copper [200], selenium [39] and arsenic and antimony [40]. Extraction of leaves with a chloroform solution of xanthate completely extracted cadmium [41,103]. X-ray fluorescence spectroscopy is a nondestructive method of analysing plant materials if they can be converted into a suitable form for presentation to the instrument. 

Reddy and Reddy [54] used differential pulse anodic stripping voltammetry on chloroform extracts of the xanthate to determine cadmium in soil. 

A general lack of effectiveness has been noted for several MCAs in the suppression of GI-uptake of cadmium in mice. In this study the MCAs, the metal-binding capacity was 2-6.8 mM g 1, ranged from DTPA immobilized via amide bond formation to finely divided aminopropyl-silica, xanthates of polyvinylalcohol and various polysaccharides, and a dextran bearing ethylthiol moieties produced by action of ethylenesulphide on dextran209. ... 

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