Ag(I) Complexes Containing N-Phenyl-N′-cyano-formamidine: Syntheses, Structures, and Ligand Conformations

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• 作者：Liang-Mao Chiang ; Chun-Wei Yeh ; Zhi-Kai Chan ; Kai-Ming Wang ; Yi-Chen Chou ; Jhy-Der Chen ; Ju-Chun Wang ; J. Y. Lai
• 刊名：Crystal Growth & Design
• 出版年：2008
• 出版时间：February 2008
• 年：2008
• 卷：8
• 期：2
• 页码：470 - 477
• 全文大小：1315K
• 年卷期：v.8,no.2(February 2008)
• ISSN：1528-7505

文摘

The reactions of the unsymmetrical ligand N-phenyl-N′-cyano-formamidine (L) with AgX (X = NO₃⁻, SO₃CF₃⁻, and BF₄⁻) afforded the complexes [AgL₃NO₃] (1), [AgLSO₃CF₃]_∞ (2) and [AgLBF₄]_∞ (3), whereas the reactions of L with AgClO₄ in tetrahydrofuran at room temperature and at refluxing temperature afforded two supramolecular isomers of [AgLClO₄]_∞, (4) and (5), respectively. These complexes were characterized by X-ray crystallography, which confirmed that complexes 2−5 are coordination polymers. Complex 1 is a triangular planar molecule with three L’s coordinating to the Ag(I) metal center through the cyano nitrogen atoms. While the cations of complexes 2−4 form one-dimensional zigzag chains, those of 5 show helical chains that are interlinked through η³ π-donor behavior of the unsymmetrical ligand L to form two-dimensional polymeric sheets. The L ligands in complex 1 adopt the syn conformation, and those in 2–5 adopt the anti conformation.