کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1303236 | 974753 | 2008 | 4 صفحه PDF | دانلود رایگان |
Novel nickel(II) hexaaza macrocyclic complexes, [Ni(LR,R)](ClO4)2 (1) and [Ni(LS,S)](ClO4)2 (2), containing chiral pendant groups have been synthesized by an efficient one-pot template condensation and characterized (LR,R/S,S = 1,8-di((R/S)-α-methylbenzyl)-1,3,6,8,10,13-hexaazacyclotetradecane). The crystal structures of 1 and 2 were determined by single-crystal X-ray analysis. Each complex has a square-planar coordination environment for the nickel(II) ion, and is either an R or an S enantiomorph depending on the pendant groups. The circular dichroism spectrum of 1 showed a negative, positive and negative peak at 345, 440, and 492 nm, respectively, and that of 2 exhibited an enantiomeric pattern.
Novel hexaaza macrocyclic nickel(II) complexes, 1 and 2, containing chiral α-methylbenzyl groups have been synthesized by an efficient one-pot template condensation and characterized. The observation of the Cotton effect and the X-ray crystal structure clearly provided evidence for the chirality of 1 and 2.Figure optionsDownload as PowerPoint slide
Journal: Inorganic Chemistry Communications - Volume 11, Issue 7, July 2008, Pages 745–748