共查询到20条相似文献,搜索用时 93 毫秒
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Dietmar Breithaupt 《Nachrichten aus der Chemie》2001,49(2):191-192
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Klaus Kümmerer 《Nachrichten aus der Chemie》2004,52(1):55-55
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Carsten Wieczorrek 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(9):1082-1084
The novel compound bis(1,4,7,10‐tetraoxacyclododecane)cadmium(II) decaiodide, [Cd(C8H16O4)2]I10, contains the [Cd(12‐crown‐4)2]2+ complex cation, triiodide ions and iodine molecules. Two triiodide ions and two iodine molecules form isolated twisted I102? rings. The geometry of the complex cation is as expected, e.g.d(Cd—O) = 2.366 (4) and 2.394 (4) Å. 相似文献
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Uwe Karst 《Nachrichten aus der Chemie》2002,50(4):433-433
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Doris Kunz 《Chemie in Unserer Zeit》2009,43(4):224-230
Click‐Chemistry is a concept in organic synthesis that uses a limited amount of very reliable reactions on a broad variety of substrates. This leads within a few steps to molecules of high diversity which is important to accelerate drug‐discovery. Besides favourable thermodynamic requirements, the criteria for a click‐reaction include also simple reaction conditions and a quick and easy (almost unnecessary) workup. The most successful of these click‐reactions is the copper catalysed 1, 3‐dipolar cycloaddition of azides and alkynes, which in the meantime is used in most diverse areas of chemistry. The mechanistic ideas of this reaction is looked at in more detail. 相似文献