School of Chemistry, University of St. Andrews, St Andrews, Fife KY16 9ST, UK.
Molecules. 2012 Nov 8;17(11):13307-29. doi: 10.3390/molecules171113307.
Six silver(I) coordination complexes have been prepared and structurally characterised. Mixed chalcogen-donor acenaphthene ligands L1-L3 [Acenap(EPh)(E'Ph)] (Acenap = acenaphthene-5,6-diyl; E/E' = S, Se, Te) were independently treated with silver(I) salts (AgBF₄/AgOTf). In order to keep the number of variables to a minimum, all reactions were carried out using a 1:1 ratio of Ag/L and run in dichloromethane. The nature of the donor atoms, the coordinating ability of the respective counter-anion and the type of solvent used in recrystallisation, all affect the structural architecture of the final silver(I) complex, generating monomeric, silver(I) complexes {[AgBF₄(L)₂] (1 L = L1; 2 L = L2; 3 L = L3), [AgOTf(L)₃] (4 L = L1; 5 L = L3), [AgBF₄(L)₃] (2a L = L1; 3a L = L3)} and a 1D polymeric chain {AgOTf(L3) 6}. The organic acenaphthene ligands L1-L3 adopt a number of ligation modes (bis-monodentate μ₂-η²-bridging, quasi-chelating combining monodentate and η⁶-E(phenyl)-Ag(I) and classical monodentate coordination) with the central silver atom at the centre of a tetrahedral or trigonal planar coordination geometry in each case. The importance of weak interactions in the formation of metal-organic structures is also highlighted by the number of short non-covalent contacts present within each complex.
已制备并结构表征了六个银（I）配合物。混合硫属元素供体苊配体 L1-L3 [Acenap(EPh)(E'Ph)]（Acenap = 苊-5,6-二基；E/E' = S、Se、Te）分别与银（I）盐（AgBF₄/AgOTf）反应。为了将变量数保持在最低限度，所有反应均使用 Ag/L 的 1:1 比例在二氯甲烷中进行。供体原子的性质、相应抗衡阴离子的配位能力以及重结晶中使用的溶剂类型，都会影响最终银（I）配合物的结构架构，生成单核、银（I）配合物{[AgBF₄(L)₂]（1 L = L1；2 L = L2；3 L = L3），[AgOTf(L)₃]（4 L = L1；5 L = L3），[AgBF₄(L)₃]（2a L = L1；3a L = L3）}和一维聚合物链{AgOTf(L3) 6}。有机苊配体 L1-L3 采用多种键合模式（双-单齿 μ₂-η²-桥联、准螯合结合单齿和 η⁶-E(phenyl)-Ag(I)和经典单齿配位），中心银原子位于四面体或三角平面配位几何结构的中心，在每种情况下。弱相互作用在金属-有机结构形成中的重要性也通过每个配合物中存在的大量短非共价接触得到强调。
