کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1307021 | 975115 | 2009 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Two different 1D-chains in the structures of the copper(I) coordination polymers based on bidentate Schiff-base building units and thiocyanate anions as bridging ligands Two different 1D-chains in the structures of the copper(I) coordination polymers based on bidentate Schiff-base building units and thiocyanate anions as bridging ligands](/preview/png/1307021.png)
The reaction of the bidentate Schiff-base ligands (3,4,5-MeO-ba)2en (L1) and (4-Me-ba)2en (L2) with Cu(SCN) in CH3CN yielded two copper(I) coordination polymers [Cu(L1)(SCN)]n (1) and [Cu(L2)(SCN)]n (2), which have been characterized by elemental analyses, IR- and 1H NMR-spectroscopy, and X-ray crystallography. The non-centrosymmetric structures of both Cu(I) complexes consist of an one-dimensional polymeric chain in which copper(I) ions are bridged by two thiocyanate groups bonding in an end-to-end fashion. The Cu(I)⋯Cu(I) separation is 5.604 Å in 1 and 5.706 Å in 2.
From the direct reaction of (3,4,5-MeO-ba)2en (L1) and (4-Me-ba)2en (L2) with CuNCS in acetonitrile solution the neutral 1D copper(I) coordination polymers Cu(L1)(SCN)]n (1) and [Cu(L2)(SCN)]n (2) were prepared and characterized by elemental analyses and H NMR and IR spectroscopy. The crystal structures of 1 and 2 have been determined by X-ray diffraction and revealed the copper atoms are bridged alternately by end–end (EE) thiocyanato ligand.Figure optionsDownload as PowerPoint slide
Journal: Inorganica Chimica Acta - Volume 362, Issue 13, 15 October 2009, Pages 4837–4842