Azaborane usually refers a

borane Trihydridoboron, also known as borane or borine, is an unstable and highly reactive molecule with the chemical formula . The preparation of borane carbonyl, BH3(CO), played an important role in exploring the chemistry of boranes, as it indicated ...

cluster may refer to: Science and technology Astronomy * Cluster (spacecraft), constellation of four European Space Agency spacecraft * Asteroid cluster, a small asteroid family * Cluster II (spacecraft), a European Space Agency mission to study th ...

where BH vertices are replaced by N or NR (R = H, organic substituent). Like many of the related

boranes Boranes is the name given to compounds with the formula BxHy and related anions. Many such boranes are known. Most common are those with 1 to 12 boron atoms. Although they have few practical applications, the boranes exhibit structures and bon ...

, these clusters are

polyhedra In geometry, a polyhedron (plural polyhedra or polyhedrons; ) is a three-dimensional shape with flat polygonal faces, straight edges and sharp corners or vertices. A convex polyhedron is the convex hull of finitely many points, not all on t ...

and can be classified as ''closo-'', ''nido-'', ''arachno-'', etc. Within the context of

Wade's rules In chemistry the polyhedral skeletal electron pair theory (PSEPT) provides electron counting rules useful for predicting the structures of clusters such as borane and carborane clusters. The electron counting rules were originally formulated by ...

, NR is a 4-electron vertex, and N is a 3-electron vertex. Prominent examples are the charge-neutral ''nido''-NB₁₀H₁₃ (i.e. (NH)(BH)₁₀) and ''closo''-NB₁₁H₁₂ (i.e. (NH)(BH)₁₁).{{cite journal, author=P. Paetzold, title=New Perspectives in Boron-Nitrogen Chemistry-I, year=1991, pages=345–350, volume=63, journal=Pure Appl. Chem., issue=3, doi=10.1351/pac199163030345, s2cid=53659373, url=https://www.iupac.org/publications/pac/pdf/1991/pdf/6303x0345.pdf Azaboranes can also refer to simpler compounds including

iminoborane Iminoboranes comprise a group of organoboron compounds with the formula RB=NR'. They are electronically related to acetylenes but are usually more reactive due to the polarity. Structure and bonding The parent iminoborane, HB=NH, is produce ...

s (formula = RN=NR') and

borazine Borazine, also known as borazole, is a non-polar inorganic compound with the chemical formula B3H6N3. In this cyclic compound, the three BH units and three NH units alternate. The compound is isoelectronic and isostructural with benzene. For th ...

References

Boron–nitrogen compounds Cluster chemistry Boranes

See also

References