Boron phosphide

The reaction of the hydrides of both the Groups nib and Vb elements is also used notably in the production of boron phosphide at 950-1000°C as follows ... 

Solid state neutron detector of boron phosphide which is arefractory semiconductor with a wideband gap.l" ... 

Borondiiodophosphide, phosphine, phosphorus trioxide and trimercury tetraphosphide all ignite in contact with chlorine at ambient temperature. Trimagnesium diphosphide and trimanganese diphosphide ignite in warm chlorine [1], while ethylphosphine explodes with chlorine [2], Unheated boron phosphide incandesces in chlorine. 

Boron (finely divided forms) reacts violently with cone, acid and may attain incandescence. The vapour of phosphorus, heated in nitric acid in presence of air, may ignite. Boron phosphide ignites with the cone, acid [1], Silicon crystallised from its eutectic with aluminium reacts violently with cone, acid [2], arsenic may react violently with the fuming acid, and finely divided carbon similarly with cone, acid [3], Use of cone, acid to clean a stainless steel hose contaminated with phosphorus led to an explosion [4],... 

Boron phosphide ignites in molten nitrates mixtures of the nitrate with copper(II) phosphide explode on heating, and that with copper monophosphide explodes on impact. 

Lee J, Fujishima A, Honda K, Kumashiro Y (1985) Photoelectrochemicl behaviour of p-type boron phosphide photoelectrode in acidic solution. Bull Chem Soc Jpn 58 2634-2637... 

Sodium nitrate Boron phosphide See Nitric acid Non-metals See related NON-METALS... 

Boron phosphide occurs in two forms, one of which, cubic BP, has a diamondlike structure analogous to cubic boron nitride (see above). The other variety, Bi2PL8, has a partially disordered crystal structure that contains icosahedral Bi2 units, as found in many metal borides (Section 5-3). Cubic BP is extremely inert, resisting attack by boiling concentrated acids or bases, is not oxidized in air below... 

Cubic boron phosphide is a III-V semiconductor with a large band gap. It is stable to 2500 °C at high pressure but decomposes at 1100 °C under vacuum with elimination of volatile white phosphorus, and formation of gray B12P2, which can be recrystallized from molten iron or aluminum to give black crystals. X-ray studies indicate thatthis material contains Bi2 icosahedra linked by P2 moieties. The related boron... 

The chemistry of boron-phosphorus compouuds has been reviewed. Numerous boron-phosphorus derivatives have been reported, but relatively few boron-arsenic or boron-antimony compounds have been described. Boron-phosphorus compounds are similar in many ways to boron nitrogen derivatives, but the teudeucy to share boudiug electrons in covalent tetrahedral compounds is much more evident with phosphorus thau with uitrogeu. lu fact, most boron phosphorus chemistry iuvolves tetrahedral borou. They are typically either phosphiue-boraue complexes, such as R3P BR j, or phosphinoboranes (R2PBR2) , cyclic or polymeric derivatives of the hypothetical H3P BH3. The chemistry of these compounds and that of boron phosphate and thiophosphate is described below. Boron phosphides are discussed in Section 2.6. 

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