New polycyclic borazine species†
Abstract
The new polycyclic borazines B2{1,2-N2C6H4}2{B2(NMe2)2}2, B2{1,8-N2naph}2{B2(NMe2)2}2 and B2(NPh)4{B2(NMe2)2}2 have been prepared from diborate(4) anions and two equivalents of B2Cl2(NMe2)2 and have been structurally characterised. Aspects of their structure and bonding are discussed and comparison made with corresponding polycyclic aromatic