Arsenides, antimonides and bismuthides

Metal arsenides, antimonides and bismuthides can be prepared by direct combination of the metal and group 15 element. Like the phosphides, classification is not simple, and structure types vary. Our coverage here is, therefore, selective 

Arsenides and antimonides containing the [Asy] and [Sby] ions can be prepared by, for example, reactions 15.57 and 15.58. These Zintl ions are structurally related to [P7] (15.18) and their bonding can be described in terms of localized 2-centre 2-electron interactions. 

Heteroatomic Zintl ions incorporating group 15 elements are present in the compounds [K(crypt-222)]2[Pb2Sb2], [K(crypt-222)]2[GaBi3], [K(ciypt-222)]2[InBi3] and 

The syntheses of cationic bismuth clusters were described in Section 9.12. The [Bis] ion may also be obtained by oxidation of Bi using GaCls in benzene, or using AsFs. Although [Bis], [Big] and [Bi9] have been known for many years, no well-characterized example of a homopolyatomic antimony cation was reported until 2004. 

The P-P bond distances of 215 pm are shorter than a typical single bond (220 pm) but longer than a double bond (see Section 19.6). Cyclic [P4] is a 67r-aromatic system, and the bonding is explored in the exercise below. 

Three of the occupied MOs of P4l are shown helow. The Cg orhitals are the highest lying occupied MOs. Assume that the p4-ring is oriented in the jr -plane. 

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Arsenides, antimonides and bismuthides. A number of salt-like related binary compounds formed with these semi-metals pertain to the following structure types NaCl, NiAs, ZnS, Na3As, FeS2, etc. 

No, the editor didn t know what this name meant either.) It means salts of the triva-lent anions of Group V, restricted in [1] to arsenides, antimonides and bismuthides and prepared by reaction of sodium pnictides with anhydrous halides of transition and lanthanide metals. This violently exothermic reaction may initiate as low as 25°C. Avoidance of hydrated halides is cautioned since these are likely to react uncontrollably on mixing. Another paper includes a similar reaction of phosphides, initiated by grinding [2], Nitrides are reported made from the thermally initiated reaction of sodium azide with metal halides, a very large sealed ampoule is counselled to contain the nitrogen [3],... 

Chapter 14 Nitrides, phosphides, arsenides, antimonides and bismuthides 401... 

Phosphides, Arsenides, Antimonides and Bismuthides of Alkali Metals from the Elements... 

Other organogermanitjm arsenides, antimonides and bismuthides are listed at the bottom of Table 7I and in Chapter 6.1.1. 

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