Magnus’s green salt

In the complex [Co(NH3)6]Cl3, the cation is [Co(NH3)6]3+, and it is named first. The coordinated ammonia molecules are named as ammine, with the number of them being indicated by the prefix hexa. Therefore, the name for the compound is hexaamminecobalt(III) chloride. There are no spaces in the name of the cation. [Co(NH3)5C1]C12 has five NH3 molecules and one CN coordinated to Co3+. Following the rules just listed leads to the name pentaamminechlorocobalt(III) chloride. Potassium hexacyanoferrate(III) is K3[Fe(CN)6j. Reinecke s salt, NH4[Cr(NCS)4(NH3)2], would be named as ammonium diamminetetrathiocyanatochro mate (III). In Magnus s green salt, [Pt(NH3)4][PtCl4], both cation and anion are complexes. The name of the complex is tetraammineplatinum(II) tetrachloroplatinate(II). The compound [Co(en)3](N03)3 is named as tris(ethylenediamine)cobalt(III) nitrate. 

Other square planar Pt(II) complexes able to form infinite unidirectional chains in the solid state are known, in particular the Magnus s green salt [Pt(NH3)4][PtCl4],u but also Pt(I) complexes such as [Pt(bipy)2](N03) 2FI20 (obtained by electrochemical reduction of [Pt(bipy)2](NC>3)2 H20) have recently shown linear chain crystals (Pt-Pt = 3.56 A).12... 

Rundle and others (7, 105, 217) have suggested that the interaction between the metal atoms in these compounds is bonding, and that it is largely responsible for the uptake of the structure. So far as the analogues of Magnus s green salt are concerned, it has been shown that the structure... 

NUCLEARREACTORS - REACTOR TYPES] (Vol 17) Magnus s green salt [1382046-7]... 

Magnus s green salt — see Platinum, tetraammine-, tetrachloroplatinate... 

Magnus s green salt, the first platinum ammine, was discovered in 1828.)... 

Tetrammineplatinum(II) chloride may be prepared by heating any one of the following with excess aqueous ammonia until a colorless solution results platinum(II) chloride tetrammineplatinum(II) tetrachloroplatinate(II) (Magnus s green salt), [Pt(NH3)4][PtCl4] diamminedi-chloroplatinum, [Pt(NH3)2Cl2] or a solution of tetra-chloroplatinic(II) acid. The present method involves the preparation of pure tetrammineplatinum(II) tetrachloro-platinate(II) and its subsequent reaction with aqueous ammonia. 

One of the most investigated species is Magnus s Green Salt [Pt(NH3)4][PtCl4] (6.26), which has been known since 1828 [70]. This intractable material has attracted much attention, as X-ray analysis showed that it possesses a structure (Fig. 6.14) that contains stacked square-planar [Pt(NH3)4] cations and [PtCU] anions in the solid state. This creates a linear chain of Pt atoms that have separations of 3.23-3.25 A and leads to the generation of a band structure. The material has been shown to possess appreciable electrical conductivity (ca. 10" -10 S cm ) [71]. 

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