The reaction of squaric acid (H2SQ) with three pyridine-appended boronic acid derivatives (BA), viz. 4-pyridinylboronic acid (1BA), 3-pyridinylboronic acid (2BA), and (4-(pyridin-4-yl)phenyl)boronic acid (3BA), leads to the formation of supramolecular zwitterions of the general formula [SQ(BAH)2]·xH2O generated by proton transfer from the squaric acid to the pyridine sites. The zwitterion [SQ(1BAH)2]·2H2O can further react with the neutral molecule bipyridine (bpy) leading thus to a ternary system of the general formula [SQ(1BAH)2]·bpy.

Supramolecular zwitterions based on a novel boronic acid-squarate dianion synthon

Fornasari L.;D'Agostino S.;Braga D.
2019

Abstract

The reaction of squaric acid (H2SQ) with three pyridine-appended boronic acid derivatives (BA), viz. 4-pyridinylboronic acid (1BA), 3-pyridinylboronic acid (2BA), and (4-(pyridin-4-yl)phenyl)boronic acid (3BA), leads to the formation of supramolecular zwitterions of the general formula [SQ(BAH)2]·xH2O generated by proton transfer from the squaric acid to the pyridine sites. The zwitterion [SQ(1BAH)2]·2H2O can further react with the neutral molecule bipyridine (bpy) leading thus to a ternary system of the general formula [SQ(1BAH)2]·bpy.
2019
Fornasari L.; D'Agostino S.; Braga D.
File in questo prodotto:
Eventuali allegati, non sono esposti

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/718704
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? 1
social impact