Azaborane usually refers a borane cluster where BH vertices are replaced by N or NR (R stands typically for H or organic substituent). Like many of the related boranes, these clusters are polyhedra and can be classified as closo-, nido-, arachno-, etc..
Within the context of Wade's rules, 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).[2]
Azaboranes can also refer to simpler compounds including iminoboranes (RB=NR', where R and R' stand typically for H or organic substituent) and borazines.
See also[edit]
References[edit]
- ^ Lenka Schneider; Ulli Englert; Peter Paetzold (1994). "Die Kristallstruktur von Aza‐closo‐decaboran NB9H10". Z. Anorg. Allg. Chem. 620 (7): 1191–1193. doi:10.1002/zaac.19946200711.
- ^ P. Paetzold (1991). "New Perspectives in Boron-Nitrogen Chemistry-I" (PDF). Pure Appl. Chem. 63 (3): 345–350. doi:10.1351/pac199163030345. S2CID 53659373.
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
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