Boroxine rings

Figure 45 Boronic acids (69 and 70) with multiple boronic acid functionalities that form boroxine ring systems on thermolysis through the elimination of water. (Adapted from ref. 93.)...

Boroxine ring-containing polymers have found extensive use in the development of polymeric electrolyte materials used in ion-selective transport membranes. Matsumi and Ohno cover this area in Chapter 6 of this book. 

Electron diffraction experiments provide valuable information about structures in the gas phase. Consequently, this method of structural determination is important for inorganic ring systems that are volatile liquids or gases at room temperature. For example, the essentially planar structures of borazine (3.1, E = NH) and the isoelectronic boroxin ring (3.1, E = 0), ° the monomeric structure of the radical [CFgCNSSN] (3.2), and the all-cw arrangement of the... 

To the trigonal (R3c = D j) NaBOj type with (boroxine) rings belong a-... 

Boroxins have properties and reactivities similar to orthoborate esters. The six-membered boroxin ring structure (2)... 

Zhou F, MacFarlane D, Forsyth M (2003) Boroxine ring compounds as dissociation enhancers in gel polyelectrolytes. Electrochim Acta 48(12) 1749—1758... 

COF-1 Condensation reactions, boroxine ring formation 711 0.8 0.34 Crystalline... 

---