Conformationally locked mixed aza–thioether macrocycles: synthesis and structures of complexes of PdII, PtII and RhIII of 2,5,8-trithia[9](2,9)-1,10-phenanthrolinophane

Contu, F.; Demartin, Francesco; Devillanova, Francesco A.; Garau, Alessandra; Isaia, Francesco; Lippolis, Vito; Salis, Andrea; Verani, Gaetano

doi:10.1039/a703752j

Cited by 36 publications

(24 citation statements)

References 40 publications

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“…This is consistent with the greater preference of Pd 2+ and Pt 2+ for soft donors; however, the coordination geometry of the Pd 2+ and the disposition of the ligand L 2 (the lone pair on the O atom is clearly oriented towards the d z 2 orbital of the palladium) indicate that some form of apical interaction between the metal centre and the O- [43].…”

Section: Palladium(ii) Platinum(ii) Ruthenium(ii) and Rhodium(iii)supporting

confidence: 60%

“…For all of them, the corresponding 1:1 metal complexes were isolated and in some cases structurally characterised [36,43,44].…”

Section: Palladium(ii) Platinum(ii) Ruthenium(ii) and Rhodium(iii)mentioning

confidence: 99%

“…The 13 C NMR spectra for L 1 and L 2 and their complexes with Pd 2+ , Pt 2+ , Ru 2+ , and Rh 3+ in CD 3 CN solution in the range 320-238 K were also recorded [36,43]. The spectra of the complexes show no changes in any features of their peaks (six for the aromatic region and three for the aliphatic portion of the macrocyclic ligands, a C s symmetry is supposed for the form present in solution) over the temperature range explored, demonstrating the absence of fluxionality in solution, but also excluding the possibility that the apical S-donor in L 1 or the O-donor in L 2 is flipping between being bound and unbound to the metal centres.…”

Section: Palladium(ii) Platinum(ii) Ruthenium(ii) and Rhodium(iii)mentioning

confidence: 99%

“…Cyclic voltammetry measurements (Table 1) of all complexes with heavy Group VIII transition metal ions here considered were carried out in MeCN (0.1 M Bu n 4 NBF 4 ) at platinum electrodes [36,43]. The first reduction process for the Pd 2+ , Pt 2+ , and Rh 3+ complexes, and the second reduction process observed for the Rh 3+ complexes were coulometically tested to be a one-electron exchange and assigned to the couples Pd II/I , Pt II/I , and Rh III/II and Rh II/I , respectively, by comparison with the redox behaviour of related complexes with polythia and mixed N/S-donor macrocyclic ligands.…”

Section: Palladium(ii) Platinum(ii) Ruthenium(ii) and Rhodium(iii)mentioning

confidence: 99%

“…The first reduction process for the Pd 2+ , Pt 2+ , and Rh 3+ complexes, and the second reduction process observed for the Rh 3+ complexes were coulometically tested to be a one-electron exchange and assigned to the couples Pd II/I , Pt II/I , and Rh III/II and Rh II/I , respectively, by comparison with the redox behaviour of related complexes with polythia and mixed N/S-donor macrocyclic ligands. Unfortunately, attempts to establish the precise nature of the reduction products in the case of Pd 2+ and Pt 2+ complexes were not successful, presumably because of their high reactivity [36,43]. Mononuclear Pd I and Pt I coordination compounds are highly unusual and dimerization involving metal-metal bond formation is described as the dominant quenching process [43].…”

Section: Palladium(ii) Platinum(ii) Ruthenium(ii) and Rhodium(iii)mentioning

confidence: 99%

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Synthesis, coordination properties, and analytical applications of mixed donor macrocycles containing the 1,10-phenanthroline sub-unit

Lippolis

Shamsipur

2006

JICS

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Section: Palladium(ii) Platinum(ii) Ruthenium(ii) and Rhodium(iii)supporting

confidence: 60%

“…For all of them, the corresponding 1:1 metal complexes were isolated and in some cases structurally characterised [36,43,44].…”

Section: Palladium(ii) Platinum(ii) Ruthenium(ii) and Rhodium(iii)mentioning

confidence: 99%

Section: Palladium(ii) Platinum(ii) Ruthenium(ii) and Rhodium(iii)mentioning

confidence: 99%

Section: Palladium(ii) Platinum(ii) Ruthenium(ii) and Rhodium(iii)mentioning

confidence: 99%

Section: Palladium(ii) Platinum(ii) Ruthenium(ii) and Rhodium(iii)mentioning

confidence: 99%

See 3 more Smart Citations

Synthesis, coordination properties, and analytical applications of mixed donor macrocycles containing the 1,10-phenanthroline sub-unit

Lippolis

Shamsipur

2006

JICS

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Coordination Chemistry of 2,5,8-Trithia[9],(2,9)-1,10-phenanthrolinophane (L) toward Rhodium(III) at the Polarised Water/1,2-Dichloroethane Interface − A Possible New Approach to the Problem of Separating RhIII from Chloride Media

Blake

Caçote

Devillanova

et al. 2002

Eur. J. Inorg. Chem.

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The coordination chemistry involved in the assisted transfer of Rh III by interfacial coordination with 2,5,8-trithia[9],(2,9)-1,10-phenanthrolinophane (L) has been studied at the water/ 1,2-dichloroethane interface by cyclic voltammetry. The dependence of the half-wave transfer potential on the ligand and metal concentrations suggests the [Rh(L)Cl 2 ] + formulation for the complex cation involved in the assisted transfer. In contrast, from the reaction of L in refluxing MeCN/water

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Mixed Aza‐Thioether Crowns Containing a 1,10‐Phenanthroline Sub‐Unit as Neutral Ionophores for Silver Ion

et al. 2002

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Three different recently synthesized aza-thioether crowns containing a 1,10-phenanthroline sub-unit (L1 ± L3) and a corresponding acyclic ligand (L4) were studied to characterize their abilities as silver ion ionophores in PVCmembrane electrodes. Novel conventional silver-selective electrodes with internal reference solution (CONISE) and coated graphite-solid contact electrodes (SCISE) were prepared based on one of the 15-membered crowns containing two donating S atoms and two phenanthroline-N atoms (L1). The electrodes reveal a Nernstian behavior over wide Ag ion concentration ranges (1.0 Â 10 À5 À 1.0 Â 10 À1 M for CONISE and 5.0 Â 10 À8 À 4.0 Â 10 À2 M for SCISE) and very low limits of detection (8.0 Â 10 À6 M for CONISE and 3.0 Â 10 À8 M for SCISE). The potentiometric response is independent from pH of the solution in the pH range 3.0 ± 8.0. The electrodes manifest advantages of low resistance, very fast response and, most importantly, good selectivities relative to a wide variety of other cations. The electrodes can be used for at least 2 months (for CONISE) and 4 months for (SCISE) without any appreciable divergence in potentials. The electrodes were used as an indicator electrode in the potentiometric titration of Ag ion and in the determination of silver in photographic emulsions and in radiographic and photographic films.

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Conformationally locked mixed aza–thioether macrocycles: synthesis and structures of complexes of PdII, PtII and RhIII of 2,5,8-trithia[9](2,9)-1,10-phenanthrolinophane

Cited by 36 publications

References 40 publications

Synthesis, coordination properties, and analytical applications of mixed donor macrocycles containing the 1,10-phenanthroline sub-unit

Synthesis, coordination properties, and analytical applications of mixed donor macrocycles containing the 1,10-phenanthroline sub-unit

Coordination Chemistry of 2,5,8-Trithia[9],(2,9)-1,10-phenanthrolinophane (L) toward Rhodium(III) at the Polarised Water/1,2-Dichloroethane Interface − A Possible New Approach to the Problem of Separating RhIII from Chloride Media

Mixed Aza‐Thioether Crowns Containing a 1,10‐Phenanthroline Sub‐Unit as Neutral Ionophores for Silver Ion

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