کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1302439 | 974692 | 2008 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: New planar polynitrile dianion and its first coordination polymer with unexpected short M⋯M contacts (tcno2− = [(NC)2CC(O)C(CN)2]2−) New planar polynitrile dianion and its first coordination polymer with unexpected short M⋯M contacts (tcno2− = [(NC)2CC(O)C(CN)2]2−)](/preview/png/1302439.png)
A new planar polynitrile dianion ([tcno]2− = [(NC)2CC(O)C(CN)2]2−) has been synthesized as its potassium salt, K2[tcno] (1). The crystallization of 1 by the slow evaporation of an aqueous solution at room temperature gave two types of colourless crystals having two different shapes [1-A: fine plates and 1-B: needles] for which the crystal structure determinations showed similar geometries for the polynitrile anion in both the structures. The combination of this novel dianion with Cu(II) led to the coordination complex [Cu(tcno)2(H2O)2] (2), which constitutes the first coordination complex of this dianion. The structure of 2 can be described as a coordination polymer in which the organic dianion acts as a μ3-bridging ligand. Despite the fact that the Cu⋯Cu bridges have a large number of atoms, the Cu⋯Cu distance observed through this ligand is relatively short (Cu⋯Cu 3.644 Å) compared to those reported for several polynitrile metal complexes (>6 Å).
A new planar polynitrile dianion ([tcno]2− = [(NC)2CC(O)C(CN)2]2−) has been synthesized and characterized. Its combination with Cu(II) metal ion led to the coordination complex [Cu(tcno)2(H2O)2], which was characterized as the first example in which this anion acts as a ligand. The monodimensional structure in which the organic dianion acts as a μ3-bridging ligand showed very short Cu⋯Cu contacts (3.644 Å) compared to those reported for several polynitrile metal complexes (>6 Å).Figure optionsDownload as PowerPoint slide
Journal: Inorganic Chemistry Communications - Volume 11, Issue 8, August 2008, Pages 921–924