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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- 作者：Malia S. Hain ; Yoko Fukuda ; Carolina Rojas Ram铆rez ; Benjamin Y. Winer ; Stephanie E. Winslow ; Robert D. Pike ; Deborah C. Bebout
- 刊名：Crystal Growth & Design
- 出版年：2014
- 出版时间：December 3, 2014
- 年：2014
- 卷：14
- 期：12
- 页码：6497-6507
- 全文大小：455K
- ISSN：1528-7505
文摘
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鈥揅l interactions rather than the desired intramolecular Zn鈥揝e binding. Rare examples of Cd(II)-selenoether bonding are provided by tricoordinate L in dinuclear [CdLCl(渭-Cl)]2 and mononuclear [CdL(渭-NO3)2]. Unique intramolecular Zn-selenoether and Cd-diselenide bonds are reported for [ZnL(渭-NO3)2] and [CdL*(渭-NO3)2], respectively. In addition, a cocrystal of [CdL(渭-NO3)2] and [CdL*(渭-NO3)2] is structurally characterized. The intermolecular pyridyl 蟺-interactions observed in these diverse structures are highlighted.