FIRST EXAMPLE OF A STABLE 1,1-BIDENTATE LEWIS-ACID BASED ON BORON ANDZIRCONIUM - SYNTHESIS, REACTIVITY, X-RAY-ANALYSIS AND NMR-STUDIES

[1-(1,3,2-dioxaborinane-2-yl)hexyl]zirconium(IV)2, fully characterized by X-ray, H-1-H-1 double-quantum-filtered COSY and C-13-H-1 heteronuc lear chemical shift correlation NMR studies, IR and elemental analysis , reacts selectively with electrophilic reagents, N-bromo-and N-chloro succinimide and bromine to give alpha-haloboronic esters; it also poly merizes styrene without the aid of a co-catalyst.