145332-53-2Relevant academic research and scientific papers
A parahydrogen based NMR study of Pt catalysed alkyne hydrogenation
Boutain, Marie,Duckett, Simon B.,Dunne, John P.,Godard, Cyril,Hernandez, Jose M.,Holmes, A. Jonathan,Khazal, Iman G.,Lopez-Serrano, Joaquin
, p. 3495 - 3500 (2010/07/03)
A parahydrogen based NMR study of the platinum(ii) bis-phosphine triflate catalysed hydrogenation of alkynes in methanol reveals that platinum bis-phosphine alkyl cations and methanol functionalised platinum bis-phosphine alkylether cations, are responsible for the observed alkene and vinylether products.
Regioselective double cycloplatination of 9,10-bis(diphenylphosphino) anthracene
Jian, Hu,Yip, John H. K.
, p. 1093 - 1100 (2009/06/28)
Double eyclometalation of 9,10-bis(diphenylphosphino)anthracene (PAnP) by Pt(L)(OTf)2 (L = diphosphines, OTf = CF3SO3) gives rise to the geometrical isomers syn- and anti-[Pt2(L) 2(PAnP-H2)
Self-assembly and anion encapsulation properties of cavitand-based coordination cages
Fochi,Jacopozzi,Wegelius,Rissanen,Cozzini,Marastoni,Fisicaro,Manini,Fokkens,Dalcanale
, p. 7539 - 7552 (2007/10/03)
Two novel classes of cavitand-based coordination cages 7a-j and 8a-d have been synthesized via self-assembly procedures. The main factors controlling cage self-assembly (CSA) have been identified in (i) a P-M-P angle close to 90° between the chelating ligand and the metal precursor, (ii) Pd and Pt as metal centers, (iii) a weakly coordinated counterion, and (iv) preorganization of the tetradentate cavitand ligand. Calorimetric measurements and dynamic 1H and 19F NMR experiments indicated that CSA is entropy driven. The temperature range of the equilibrium cage-oligomers is determined by the level of preorganization of the cavitand component. The crystal structure of cage 7d revealed the presence of a single triflate anion encapsulated. Guest competition experiments revealed that the encapsulation preference of cages 7b,d follows the order BF4- > CF3SO3- ? PF6- at 300 K. ES-MS experiments coupled to molecular modeling provided a rationale for the observed encapsulation selectivities. The basic selectivity pattern, which follows the solvation enthalpy of the guests, is altered by size and shape of the cavity, allowing the entrance of an ancillary solvent molecule only in the case of BF4-.
Self-assembly of cationic, tetranuclear, Pt(II) and Pd(II) macrocyclic squares. X-ray crystal structure of [Pt2+(dppp)(4,4′-bipyridyl)2-OSO 2CF3]4
Stang, Peter J.,Cao, Danh H.,Saito, Shinichi,Arif, Atta M.
, p. 6273 - 6280 (2007/10/02)
The preparation, characterization, and some chemistry of a series of unique cationic, tetranuclear, Pt(II)-and Pd(II)-based macrocyclic squares are reported. A variety of bidentate ligands (bipyridine, diazapyrene, dicyanobenzene, and dicyanobiphenyl) are interacted with the square-planar cis-bis(phosphine) Pt and Pd bis(triflate) complexes in organic solvents at room temperature, resulting in molecular squares in high isolated yields via self-assembly. All molecular squares are robust air- and water-stable microcrystalline solids with decomposition points mostly above 200 °C. They are generally soluble in polar organic solvents but not in water or nonpolar solvents like pentane, toluene, and ether. The cyano-based macrocycles are highly fluxional in solution, whereas the bipy and related systems are more stable. Concentration-dependent chemical shifts are observed for the ortho and meta protons of 1,5-dihydroxynaphthalene, indicating host-guest interactions and inclusion phenomena. X-ray crystal structures are reported for the molecular square [(dppp)Pt(bipy)]48+8-OSO2CF 3 (15a), as well as a dinuclear dicyanobenzene complex 25 and the [(dppp)M(pyrazine)]2+2-OSO2CF3 (M = Pt, Pd) complexes 20a,b.
