User:Stone/boron chemistry

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Boron chemistry

Contents 1 Inorganic 1.1 Covalent 1.2 Ionic 2 Organic 2.1 Carboborane 2.2 Organoborane

[edit] Inorganic

[edit] Covalent

Boron trichloride as a member of this group of substance gives a good example. The B-Cl bond is polarized but not ionic like in aluminium trichloride, which form polymeric solid, the boron halides are molecular.. The halogene and the Diborane is B(OCH₃)₃

The other big group are boron hydrogen compounds which have similarity to the hydrocarbons. These boranes form clusters.

Closo-boranes (closed), from which only the anions are known, form closed polyeders. B₆H_62- octaeder, B₇H_72- trigonal bipyramide, B₈H_82- dodecaeder and B₁₂H_122- icosaeder are examples for these kind of molecules.

Nido-boranes B_nH_n+4 (nidus=nest) are form like a basket or nest.

Arachno-boranes (arachne=spider) form spider like structures

Hypho-boranes B_nH_n+8 (hypho=net) form net like structures

[edit] Ionic

The B³⁺ is not known, where as the B^- ₁₂

[edit] Organic

[edit] Carboborane

These compounds are closely related to the

[edit] Organoborane