Copper molybdate

About 50% of copper in food is absorbed, usually under equitibrium conditions, and stored in the tiver and muscles. Excretion is mainly via the bile, and only a few percent of the absorbed amount is found in urine. The excretion of copper from the human body is influenced by molybdenum. A low molybdenum concentration in the diet causes a low excretion of copper, and a high intake results in a considerable increase in copper excretion (68). This copper—molybdenum relationship appears to correlate with copper deficiency symptoms in cattle. It has been suggested that, at the pH of the intestine, copper and molybdate ions react to form biologically unavailable copper molybdate (69). 

The copper molybdate substructure of 16, (Cu(bpy)(Mo205) 4+, is a onedimensional chain of binuclear molybdate subunits bridged by Cu(bpy) 2+ moieties. These chains are connected in turn by the propylenediphosphonate ligands. As shown... 

Class and compound Overall Cu(II) component Copper molybdate Phosphomolybdate... 

CueMOsO is (s) 3CU2O 5M0O3 (s) Copper Molybdate CueMogOis (s) 3CU2O 5M0O3 (s)... 

The ability of zinc ions to block copper absorption, possibly by formation of- intestinal metallothionein that strongly binds copper, has led to its use in pharmacological doses in the management of Wilson s disease/ Similarly molybdate ion can form insoluble copper-molybdate complexes in the intestine that limit copper absorption. The detrimental effects of organic phosphate (phytic acid) in limiting zinc absorption are aggravated by excess dietary calcium, probably by formation of a highly insoluble Ca-Zn-phytate complex. The subject of these and other interactions has been reviewed, ... 

Basic Copper Molybdate The space group Pna2t has been assigned to CU3M02O9 after Pnam was rejected on the grounds that it led to improbably short metal-metal distances.S1 However, it has been pointed out (D. H. Templeton, private communication) that the published positional parameters correspond very closely to symmetry Pnam no parameter has to be shifted more than 10 standard deviations and only one by more than 5 standard deviations to make the correspondence exact. 

CuMo04 COPPER MOLYBDATE 620 EuCI3 EUROPIUM CHLORIDE 664... 

P-07 - The structure of a copper molybdate and its relation to other natural and synthetic porous materials based on transition metal polyhedra... 

A new non-stoichiometric copper molybdate of ideal composition (NH40H)3/2(CuMo04)2 was synthesized hydro thermally and its crystal structure was solved from powder data. The material shows the hexagonal parameters a=6.0775(3) and c=21.601(1) A in the space group R-3m, The green powder exhibits the same building units observed in the mineral Volborthite and the layered structure of other materials based on transition metal polyhedra. 

Salter (1869) lists this, giving two formulations. In the first he says that A clear malachite green colour, when dried, is produced fi-om molybdate of soda and potash-chrome-alum, or from the molybdate and alum with ammonia Second, There is likewise obtainable a copper molybdate, by adding neutral molybdate of soda in excess to sulphate of copper. The precipitate is a very pale green colour. It is otherwise obscure and was probably unused by artists. 

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