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1,1'-Bis(diphenylphosphino)ferrocene complexes of platinum(II) and platinum(I): crystal and molecular structure of [(L-L)Pt(µ-H)(µ-CO)Pt(L-L)][BF4]•0.5H2O, where L-L = Fe(η5-C5H4PPh2)2

Bandini, Anna Laura and Banditelli, Guido and Cinellu, Maria Agostina and Sanna, Gavino and Minghetti, Giovanni and Demartin, Francesco and Manassero, Mario (1989) 1,1'-Bis(diphenylphosphino)ferrocene complexes of platinum(II) and platinum(I): crystal and molecular structure of [(L-L)Pt(µ-H)(µ-CO)Pt(L-L)][BF4]•0.5H2O, where L-L = Fe(η5-C5H4PPh2)2. Inorganic Chemistry, Vol. 28 (3), p. 404-410. eISSN 1520-510X. Article.

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DOI: 10.1021/ic00302a007

Abstract

A series of platinum(II) derivatives with 1,1'-bis(dipheny1phosphino)ferrocene (L-L) were synthesized and characterized in solution mainly by 1H and 31P(1{H} NMR spectroscopy. The series includes, besides the known Pt(L-L)CI2 (1), the mononuclear species Pt(L-L)(pz)2 (2, pzH = pyrazole), Pt(L-L)(3,5-Me2pz) (3, 3,5-Me2pzH = 3,5-dimethylpyrazole), [Pt(L-L)(3,5-Me2pzH)2 [BF4]2 (4), and [Pt(L-L)(H2O)2][BF4]2•χH2O (5) as well as the dinuclear species [(L-L)Pt(µ-OH)2Pt(L-L)][BF4]2 (6) and [Pt2(L-L)2H3][BF4] (7). Reaction of the hydrido complex 7 with CO (room temperature, 1 atm) gave [(L-L)Pt(µ-H)(µ-CO)Pt(L-L)][BF4] (8), formally a platinum(I) derivative. The molecular structure of [(L-L)Pt(µ-H)(µ-CO)Pt(L-L)] [BF4]•0.5H2O (8a) was determined by X-ray analysis: the complex crystallizes in the triclinic space group PĪ with a = 12.411 (4) Å, b = 15.930 (5) Å, c = 16.922 (7) Å, α = 100.64 (3)°, β = 98.74 (3)°, γ = 104.34 (3)°, Z = 2, and V = 3166 (4) Å3. The structure was refined to a conventional R factor of 0.025. In the dinuclear cation, the platinum atoms have cis-square-planar coordination, which shows a significant distortion toward tetrahedral geometry with P–Pt–P angles of 103.68 (6) and 103.64 (6)°. The Pt–Pt distance is 2.790 Å.

Item Type:Article
ID Code:3698
Status:Published
Refereed:Yes
Uncontrolled Keywords:Transition metal complexes, platinum(II) derivatives, synthetic organic chemistr
Subjects:Area 03 - Scienze chimiche > CHIM/03 Chimica generale e inorganica
Area 03 - Scienze chimiche > CHIM/01 Chimica analitica
Divisions:001 Università di Sassari > 01 Dipartimenti > Chimica
Publisher:American Chemical Society
eISSN:1520-510X
Deposited On:09 Apr 2010 10:10

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