Boron-Nitrogen Cage Structures. 1,2,4,5-Tetraaza-3,6-diborine Dimers

Contributions to the Chemistry of Boron, LXXV The Crystal and Molecular Structure of a Tetraazadiborine: 3,6-Bis(dimethylamino)-1,2,4,5-tetramethyl-1,2,4,5,3,6-tetraazadiborine

“…Its most remarkable properties are i) a redox reaction leading to triazadiborolidines and tetraazaborines 3 -4 ii) their tendency to dimerize depending on the number and size of substituents 2 > 6 . Thus hexamethyltetraazadiborine is monomeric 2 ' 4 while tC4H9B(NH-NH)2BtC4H9 is dimeric 6 .…”

“…Its most remarkable properties are i) a redox reaction leading to triazadiborolidines and tetraazaborines 3 -4 ii) their tendency to dimerize depending on the number and size of substituents 2 > 6 . Thus hexamethyltetraazadiborine is monomeric 2 ' 4 while tC4H9B(NH-NH)2BtC4H9 is dimeric 6 . The crystal structure of this dimer 7 shows that each monomeric unit adopts a boat conformation and the latter are joined together via coordinative BN bonds to give a polycyclic molecule with S4 symmetry.…”