Crystallographic Evidence of Nitrate- Interactions Involving the Electron-Deficient 1,3,5-Triazine Ring
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- 作者：Palanisamy Uma Maheswari ; Barbara Modec ; Andrej Pevec ; Bojan Kozlev
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- 刊名：Inorganic Chemistry
- 出版年：2006
- 出版时间：August 21, 2006
- 年：2006
- 卷：45
- 期：17
- 页码：6637 - 6645
- 全文大小：231K
- 年卷期：v.45,no.17(August 21, 2006)
- ISSN：1520-510X
文摘
The reaction of Zn(NO3)2·6H2O or Cu(NO3)2·3H2O with the star-shaped ligand 2,4,6-tris(di-2-picolylamino)[1,3,5]triazine (dipicatriz) in acetonitrile results in the formation of the mono- or trinuclear coordination compounds [Zn(dipicatriz)(NO3)2] (1), [Zn3(dipicatriz)(NO3)6](CH3CN)3 (2), and [Cu3(dipicatriz)(NO3)2(H2O)6](NO3)4 (3), dependingon the metal-to-ligand ratios used during the crystallization process. Their crystal structures exhibit uniquesupramolecular interactions. Compounds 1 and 2 show anion-
interactions between coordinated nitrate ions andthe s-triazine ring. Compound 3 exhibits remarkable interactions between two noncoordinated nitrate anions andthe two faces of the electron-deficient heteroaromatic ring, corroborating earlier theoretical investigations in thisarea. New theoretical investigations have been carried out on nitrate- interactions, taking into account the particularposition of the anion toward the aromatic ring observed in the crystal structures.
interactions between coordinated nitrate ions andthe s-triazine ring. Compound 3 exhibits remarkable interactions between two noncoordinated nitrate anions andthe two faces of the electron-deficient heteroaromatic ring, corroborating earlier theoretical investigations in thisarea. New theoretical investigations have been carried out on nitrate- interactions, taking into account the particularposition of the anion toward the aromatic ring observed in the crystal structures.