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nike factory-Selective isolation of gold facilitated

Title: nike factory-Selective isolation of gold facilitated
URL: http://zapatosmbtbaratos.1minutesite.es
Description: Selective isolation of gold facilitated ( cyclodextrin)2}n chain superstructure formed during the rapid co precipitation of cyclodextrin and KAuBr4 in water. This phase change is selective for this gold salt, even in the presence of other square planar palladium and platinum complexes. From single crystal X ray analyses of six inclusion complexes between , and cyclodextrins with KAuBr4 and KAuCl4, we hypothesize that a perfect match in molecular recognition between cyclodextrin and [AuBr4] leads to a near axial orientation of the ion with respect to the cyclodextrin channel, which facilitates a highly specific second sphere coordination involving [AuBr4] and [K(OH2)6]+ and drives the co precipitation of the 1:2 adduct. This discovery heralds a green host guest procedure for gold recovery from gold bearing raw materials making use of cyclodextrin an inexpensive and environmentally benign carbohydrate. As the selected area includes several crystals with different orientations