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首页> 外文期刊>Crystal growth & design >Staging Bonding between Group 12 Metal Ions and Neutral Selenium Donors: Intermolecular Interactions of Mixed N,Se Donor Ligands and Anions
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Staging Bonding between Group 12 Metal Ions and Neutral Selenium Donors: Intermolecular Interactions of Mixed N,Se Donor Ligands and Anions

机译:第12组金属离子与中性硒供体之间的分阶段键合:混合的N,Se供体配体和阴离子的分子间相互作用

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摘要

The versatile pyridyl synthons of mixed N,Se donor ligands bis(pyridin-2-ylmethyl)selane (L) and 1,2-bis(pyridin-2-ylmethyl)diselane (L*) served the dual roles of metal chelating anchors and mediators of supramolecular associations in a crystallographic approach to documenting uncommon bonding between divalent Group 12 metal ions and neutral selenium functionalities. Five new molecular species with diverse ligand configurations and conformations were structurally characterized. Two macrocyclic polymorphs of [ZnLCl2] have intermolecular Se-Cl interactions rather than the desired intramolecular Zn-Se binding. Rare examples of Cd(II)-selenoether bonding are provided by tricoordinate L in dinuclear [CdLCl(mu-Cl)](2) and mononuclear [CdL(mu-NO3)(2)]. Unique intramolecular Zn-selenoether and Cd-diselenide bonds are reported for [ZnL(mu-NO3)(2)] and [CdL*(mu-NO3)(2)], respectively. In addition, a cocrystal of [CdL(mu-NO3)(2)] and [CdL*(mu-NO3)(2)] is structurally characterized. The intermolecular pyridyl pi-interactions observed in these diverse structures are highlighted.
机译:混合的N,Se供体配体双(吡啶-2-基甲基)硒烷(L)和1,2-双(吡啶-2-基甲基)二硒烷(L *)的多用途吡啶基合成子起着金属螯合锚和晶体学方法中超分子缔合体的介体,用于记录二价12族金属离子与中性硒官能团之间的罕见键合。在结构上表征了五个具有不同配体构型和构象的新分子物种。 [ZnLCl2]的两个大环多晶型物具有分子间Se-Cl相互作用,而不是所需的分子内Zn-Se结合。三配位L在双核[CdLCl(mu-Cl)](2)和单核[CdL(mu-NO3)(2)]中提供了Cd(II)-硒醚键的稀有例子。分别报告了[ZnL(mu-NO3)(2)]和[CdL *(mu-NO3)(2)]的独特的分子内Zn-硒醚键和Cd-二硒键。另外,[CdL(mu-NO3)(2)]和[CdL *(mu-NO3)(2)]的共晶体在结构上被表征。这些不同的结构中观察到的分子间吡啶基pi相互作用突出显示。

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