WebJan 27, 2012 · Generation of soluble sources of peroxide dianion (O 2 2–) is a challenge in dioxygen chemistry.The oxidizing nature of this anion renders its stabilization in organic media difficult. This Report describes the chemically reversible reduction of oxygen (O 2) to cryptand-encapsulated O 2 2–.The dianion is stabilized by strong hydrogen bonds to N … WebComplexation behavior of a previously described heteroditopic cryptand L1 and a newly synthesized cryptand L2 toward transition metal ions is described. The cryptands readily accept a transition metal ion like Cu(II) or Ni(II) at the N4 end of the cavity forming mononuclear cryptates. The Cu(II)-cryptate of L1 further accepts a water molecule to …
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WebNov 21, 2024 · Binding hydrophilic anions such as sulfate in water is a significant academic challenge, in particular for neutral receptors. To achieve this, typically a large molecular … WebAntonella Dalla Cort, Paolo De Bernardin, Gianpiero Forte and Francesco Yafteh Mihan (DOI: 10.1039/b926222a) give an overview on the use of metal-salophen-based receptors for anions in which the anion is bound … sonicexpressblinds.com
Anion recognition by dimetallic cryptates - ScienceDirect
WebSep 17, 2010 · The design of supramolecular hosts for anions began with simple diaza bicycles, named katapinands, and has evolved over the last 40 years to a number of … WebApr 10, 2015 · This shows that, like already known for the heavier homologues, the presence of 18-crown-6 (1,4,7,10,13,16-hexaoxacyclooctadecane) is no precondition for the stabilization of the silicide cluster anion in solid state and the absence of the alkali metal ligand even allows for the crystallization in the higher symmetric monoclinic space group … WebAug 1, 2024 · Both the inner voids (cavity and cleft) are accessible to various guests such as metal ions, anions and, neutral molecules. The pyrrole ring offers hydrogen bond donor NH groups and its... small honeywell space heater