Hampered Subcomponent Self‐Assembly Leads to an Aminal Ligand: Reactivity with Silver(I) and Copper(II). Issue 1 (6th December 2016)

• Record Type: Journal Article
• Authors: Tessarolo, Jacopo; Venzo, Alfonso; Bottaro, Gregorio; Armelao, Lidia; Rancan, Marzio
• Is Part Of: European journal of inorganic chemistry. Issue 1(2017)
• Page Start: 30
• Page End: 34
• Publication Date: 2016-12-06
• Subjects: Self‐assembly -- N ligands -- Aminals -- Copper -- Silver; Chemistry, Inorganic -- Periodicals; Organometallic chemistry -- Periodicals; Bioinorganic chemistry -- Periodicals; Solid state chemistry -- Periodicals; 546
• DOI: 10.1002/ejic.201601121
• Languages: English
• ISSNs: 1434-1948

Abstract

Abstract : Insight into the ineffectiveness of a subcomponent self‐assembly procedure between 4‐aminopyridine (4‐apy) and pyridine‐2‐carbaldehyde (2‐pyA) led to a new aminal ligand (L). The combination of L with Ag I gave a 2D luminescent network, in which the silver ions have a distorted triangular‐pyramidal coordination geometry. The aminal is stable in acetonitrile and DMSO but decomposes in alcohol solvents. Moreover, we found that Cu II also induced the decomposition of L, which led to Cu(pic)2, {[Cu(4‐apy)4 ](ClO4 )2 }, and an unprecedented {[Cu4 (pic)4 (OH)2 (H2 O)6 ](ClO4 )2 } tetramer based on Cu II ions and picolinic acid (Hpic) generated in situ. The decomposition pathway of L was clarified by a combination of single‐crystal XRD analysis, NMR spectroscopy, and ESI‐MS. Abstract : The ineffectiveness of a subcomponent self‐assembly procedure leads to a new aminal ligand (L). The combination of L with Ag I gives a 2D network; Cu II induces decomposition and oxidation of L, which leads to an unprecedented [Cu4 (pic)4 (OH)2 (H2 O)6 ](ClO4 )2 (Hpic = picolinic acid) tetramer.