Intermolecular Stacking of a tetranuclear cyclic Pt(II) complex: NMR characterization and X-Ray crystal structure of cis-trans-cis-trans tetral[-2,6-diethynyl-4-nitroaniline-bis(tri(p-tolyl)phosphine)platinum(II)]
| Autor: | Fabio Sciubba, Maria Vittoria Russo, Michael B. Hursthouse, Ilaria Fratoddi, Helen R. Ogilvie, Maurizio Delfini |
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| Jazyk: | angličtina |
| Rok vydání: | 2006 |
| Předmět: |
cyclic platinum complexes
x-ray 2D NMR spectra biology Stereochemistry Chemistry Organic Chemistry chemistry.chemical_element Crystal structure Nuclear Overhauser effect biology.organism_classification Biochemistry Inorganic Chemistry Crystallography chemistry.chemical_compound Materials Chemistry Tetra Physical and Theoretical Chemistry Platinum Single crystal Two-dimensional nuclear magnetic resonance spectroscopy Phosphine Cis–trans isomerism |
| Popis: | The synthesis and characterization of a tetranuclear Pt complex, cis-traps-cis-traps tetra[mu-2,6-diethynyl-4-nitroaniline-bis(tri(ptolyl)phosphine) platinum(II)], namely [L2Pt-DENA](4) with L = tri-p-tolylphosphine, is reported. The complex was obtained by the dehydrohalogenative condensation of 2,6-diethynyl-4-nitroaniline (DENA) with cis-[dichlorobis(tri(p-tolyl)phosphine)platinum(II)]. The single crystal structure determination of [L2Pt-DENAL indicated the formation of a neutral molecular cycle with four alternating platinum units in cis and trans configurations, all bridged with DENA spacers with the presence of solvent (toluene) crystallization molecules. A twisted tetranuclear cyclic feature was identified. The formation of intermolecular stacks of the tetranuclear complex in solution was assessed by means of nuclear Overhauser enhancement spectroscopy (NOESY) and rotating frame Overhauser effect spectroscopy (ROESY) characterizations. |
| Databáze: | OpenAIRE |
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