Studies on Macromolecules Derived from Polypyrazolylboron and Related Boron-Nitrogen Species

摘要

Studies on the synthesis, characterization, and chemical behavior of pyrazaboles,semi-pyrazaboles, poly(1-pyrazolyl)borates, boroxins, diboroxanes, and borazines have been performed. Several pathways for the synthesis and chemical modification of pyrazaboles, which are characterized by the general framework and contain a central B2N4 heterocycle, have been developed. Besides normal pyrazaboles triply bridged derivatives with repeating and semi-pyrazaboles have been prepared and characterized, including a series of X-ray crystal structure determinations. Various polynuclear materials containing boron units (M=metal) and poly(1-pyrazolyl)borates have also been studied. Some corresponding derivatives of azoles other than pyrazole have been investigated highlighted by the preparation and characterization of a novel porphine analogue containing a B4N12 heterocycle.