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{{chembox |
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|verifiedrevid = 407163538 |
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| ImageFile = Magnus'-green-salt-component-ions-2D.png |
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|ImageFile = Magnus'-green-salt-component-ions-2D.png |
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| ImageSize = 250px |
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|ImageSize = 250px |
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| ImageFile1 = Magnus'-green-salt-from-xtal-1957-CM-3D-balls-horizontal.png |
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|ImageFile1 = Magnus'-green-salt-from-xtal-1957-CM-3D-balls-horizontal.png |
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| ImageSize1 = 250px |
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|ImageSize1 = 250px |
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| IUPACName = Tetraammineplatinum(II) tetrachloroplatinate(II) |
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|IUPACName = Tetraammineplatinum(II) tetrachloroplatinate(II) |
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| Section1 = {{Chembox Identifiers |
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|Section1={{Chembox Identifiers |
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| CASNo = 13820-46-7 |
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|CASNo = 13820-46-7 |
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| PubChem = 24880821 |
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|PubChem = 16213091 |
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| SMILES = |
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|ChemSpiderID = 141440 |
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|EINECS = 237-501-0 |
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| Section2 = {{Chembox Properties |
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|StdInChI=1S/4ClH.4H2N.2Pt/h4*1H;4*1H2;;/q;;;;4*-1;2*+2/p-4 |
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| Formula = H<sub>12</sub>Cl<sub>4</sub>N<sub>4</sub>Pt<sub>2</sub> |
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|StdInChIKey = VDZZIFNGBFCNGW-UHFFFAOYSA-J |
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| MolarMass = 600.09 |
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|SMILES = ()().Cl(Cl)(Cl)Cl |
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| Appearance = green solid |
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| Density = 3.7 |
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| MeltingPt = 320 |
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| BoilingPt = |
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| Solubility = |
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| Section3 = {{Chembox Hazards |
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| MainHazards = |
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| FlashPt = |
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| Autoignition = |
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|Section2={{Chembox Properties |
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'''Magnus' green salt''' is the ] with the ] . This species has been of interest in ] and ] because of its one-dimensional structure. It contains a linear chain of alternating <sup>2−</sup> anions and <sup>2+</sup> cations, in which the platinum atoms are separated by 3.25 Å.<ref>{{cite journal | author = Atoji, M.; Richardson, J. W.; Rundle, R. E. | title = On the Crystal Structures of the Magnus Salts, Pt(NH<sub>3</sub>)<sub>4</sub>PtCl<sub>4</sub> | journal = ] | year = 1957 | volume = 79 | pages = 3017–3020 | doi = 10.1021/ja01569a009}}</ref> It is a semi-conductor. The compound may be prepared by mixing aqueous solutions of <sup>2+</sup> and <sup>2−</sup>, to obtain a deep green precipitate.{{Citation needed|date=July 2009}} |
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|Formula = |
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|MolarMass = 600.09 g/mol |
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|Appearance = green solid |
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|Density = 3.7 g/cm<sup>3</sup> |
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|MeltingPtC = 320 |
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'''Magnus's green salt''' is the ] with the ] . This salt is named after ], who, in the early 1830s, first reported the compound. The compound is a ], consisting of a chain of platinum atoms. It is dark green, which is unusual for platinum compounds. |
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==Derivatives== |
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==Structure== |
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This species has attracted interest in ] and ] because of its one-dimensional structure. It contains a chain of alternating <sup>2−</sup> anions and <sup>2+</sup> cations, in which the platinum atoms are separated by 3.25 Å.<ref>{{cite journal |last1=Atoji |first1=Masao |last2=Richardson |first2=James W. |last3=Rundle |first3=R. E. |title=Pt(NH<sub>3</sub>)<sub>4</sub>PtCl<sub>4</sub><sup>1</sup> |journal=Journal of the American Chemical Society |date=June 1957 |volume=79 |issue=12 |pages=3017–3020 |doi=10.1021/ja01569a009 }}</ref> It is a ]. |
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In recent years, it has been possible to generate soluble polymers by replacing the ammonia with ethylhexylamine.<ref>{{cite journal | author = Caseri, W. | title = Derivatives of Magnus' green salt; from intractable materials to solution-processed transistors | journal = ] | year = 2004 | volume = 48 | pages = 91–100 | doi = 10.1595/147106704X1504}}</ref><ref>{{cite journal | author = Bremi, J.; Caseri, W. and Smith, P. | title = A new compound derived from Magnus' green salt: solid state structure and evidence for platinum chains in solution | journal = ] | year = 2001 | volume = 11 | pages = 2593–2596 | doi = 10.1039/b104675f}}</ref> |
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==Preparation== |
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The compound may be prepared by combining aqueous solutions of <sup>2+</sup> and <sup>2−</sup>, which gives a deep green solid precipitate.<ref>{{cite book |doi=10.1002/9780470132333.ch80 |chapter=Tetrammineplatinum(II) Chloride: (Tetrammineplatinous Chloride) |title=Inorganic Syntheses |year=2007 |last1=Keller |first1=R. N. |last2=Moeller |first2=Therald |last3=Quagliano |first3=J. V. |pages=250–253 |isbn=978-0-470-13233-3 }}</ref> Under some conditions, this reaction affords a pink ] of Magnus's green salt. In this so-called "Magnus's pink salt", the square planar Pt complexes are not stacked.<ref>{{cite journal |last1=Lucier |first1=Bryan E. G. |last2=Johnston |first2=Karen E. |last3=Xu |first3=Wenqian |last4=Hanson |first4=Jonathan C. |last5=Senanayake |first5=Sanjaya D. |last6=Yao |first6=Siyu |last7=Bourassa |first7=Megan W. |last8=Srebro |first8=Monika |last9=Autschbach |first9=Jochen |last10=Schurko |first10=Robert W. |title=Unravelling the Structure of Magnus' Pink Salt |journal=Journal of the American Chemical Society |date=29 January 2014 |volume=136 |issue=4 |pages=1333–1351 |doi=10.1021/ja4076277 |pmid=24437378 |url=http://dro.dur.ac.uk/26010/1/26010.pdf }}</ref> |
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==Related compounds== |
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Magnus's green salt has the same ] as ] ("Peyrone chloride") and ].<ref>{{cite journal |last1=Wilson |first1=Justin J. |last2=Lippard |first2=Stephen J. |title=Synthetic Methods for the Preparation of Platinum Anticancer Complexes |journal=Chemical Reviews |date=23 April 2014 |volume=114 |issue=8 |pages=4470–4495 |doi=10.1021/cr4004314 |pmid=24283498 |pmc=3999256 }}</ref> These cis and trans compounds are molecules, whereas Magnus's green salt is a polymer. This difference is manifested by the solubility of the molecular complexes in water, whereas Magnus's green salt is insoluble. |
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Soluble analogues of Magnus's green salt can be prepared by replacing the ammonia with ethylhexylamine.<ref>{{cite journal |last1=Caseri |first1=Walter |title=Derivatives of Magnus' Green Salt |journal=Platinum Metals Review |date=1 July 2004 |volume=48 |issue=3 |pages=91–100 |doi=10.1595/147106704X1504 |doi-access=free }}</ref><ref>{{cite journal |last1=Bremi |first1=Juliane |last2=Caseri |first2=Walter |last3=Smith |first3=Paul |title=A new compound derived from Magnus' green salt: solid state structure and evidence for platinum chains in solution |journal=Journal of Materials Chemistry |date=2001 |volume=11 |issue=10 |pages=2593–2596 |id={{INIST|14086852}} |doi=10.1039/b104675f |s2cid=95456246 }}</ref> |
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The corresponding palladium compound () is known as "] salt". |
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==History== |
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==History== |
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Magnus's green salt was one of the first examples of a ]. |
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This salt was discovered by ] in the early 1830s. It was one of the first examples of a metal complex of ]. Ammonia species are very common now; they were, after all, the basis of ]'s discoveries. Magnus' green salt has the same ] as ] ("Peyrone chloride") and ''trans''-PtCl<sub>2</sub>(NH<sub>3</sub>)<sub>2</sub>. These cis and trans compounds are molecules, whereas Magnus' green salt is a polymer. |
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==References== |
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==References== |
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{{Platinum compounds}} |
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{{DEFAULTSORT:Magnus' Green Salt}} |
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{{DEFAULTSORT:Magnus's green salt}} |
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