para-Chlorotetrafluorophenyl-boranes – syntheses and structures of a series of mono- and bidentate Lewis acids

Abstract

Mono- and bidentate tri-coordinated boron compounds bearing the yet unexplored para-chlorotetrafluorophenyl substituent have been synthesized and structurally investigated. The acidity of tris(para-chlorotetraphenyl)-borane (7) was shown to exceed that of the...

Definition of the Halogen Bond (IUPAC Recommendations 2013): A Revisit

“…the halogen derivative in systems containing boron such as hexachloroborazine (B 3 ­Cl 6 ­N 3 ), (naphth­alene-1,8-di­yl)­bis­(di­chloro­borane) (C 10 ­H 6 ­B 2 ­Cl 4 ), 1-carba-2,­3,4,5,­6,7,­8,9,­10,11,­12-undeca­chloro­dode­caborate (CHB 11 ­Cl 11 ), and 2,3,­4,5,6-penta­chloro-7,8,9,­10,11,12-hexa­iodo­aza-closo-dode­caborane (HB 11 ­Cl 5 ­I 6 ­N);…”

A new biphenol-dipicolylamine based ligand and its dinuclear Zn2+ complex as fluorescent sensors for ibuprofen and ketoprofen in aqueous solution

“…In water, anion recognition is an even more tough goal, due the hydration of both receptor and substrate, that hampers their mutual interaction. [15][16][17][18] Both free ligands [19][20][21][22][23][24][25][26][27][28][29][30][31][32] and metal complexes [33][34][35][36][37][38][39][40][41] can be employed as receptors for anions. The use of free ligands implies the formation of noncovalent interactions, such as hydrogen bonds or π-stacking, whereas the metal centers of complexes can act as binding sites for the carboxylate moieties of anionic guests, 42 also offering the receptor a structural organization ( preorganization).…”