کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1309032 | 1499211 | 2008 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: An unprecedented mononuclear double helicate with a square planar metal ion An unprecedented mononuclear double helicate with a square planar metal ion](/preview/png/1309032.png)
Reactions of the 1:2 condensate (L) of benzil dihydrazone and 1-methyl-2-imidazole carboxaldehyde with Cd(ClO4)2 · xH2O and CdI2 yield [CdL2](ClO4)2 (1) and LCdI2 (2), respectively. The yellow ligand L, and its yellow complexes 1 and 2 are characterized by NMR and single crystal X-ray diffraction. Though L contains four N-donor centers, 1 is found to be a four-coordinate double helicate with a square planar Cd(II)N4 core and 2 a spiral coordination polymer with tetrahedral Cd(II)N2I2 moieties. The bidentate nature of L and the occurrence of the square planar coordination of Cd(II) is explained by DFT calculations.
The accompanied homoleptic mononuclear double helicate contains a square planar Cd(II)N4 core.Figure optionsDownload as PowerPoint slide
Journal: Inorganica Chimica Acta - Volume 361, Issues 9–10, 27 June 2008, Pages 2967–2972