Guest selectivity of [Ni 2 ] supramolecular helicates.

Autor: Imperato M; Dipartimento di Scienze Chimiche e Geologiche e UdR INSTM, Università degli Studi di Modena e Reggio Emilia, via G. Campi 103, 41125 Modena, Italy. acornia@unimore.it.; Dipartimento di Scienze Fisiche, Informatiche e Matematiche, Università degli Studi di Modena e Reggio Emilia, via G. Campi 213/A, 41125 Modena, Italy.; Departament de Química Inorgànica i Orgànica, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain. aromi@ub.edu., Nicolini A; Dipartimento di Scienze Chimiche e Geologiche e UdR INSTM, Università degli Studi di Modena e Reggio Emilia, via G. Campi 103, 41125 Modena, Italy. acornia@unimore.it., Ribas-Ariño J; Departament de Química Física, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain., Antkowiak M; Departament de Química Inorgànica i Orgànica, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain. aromi@ub.edu.; Faculty of Physics, Adam Mickiewicz University, ul. Uniwersytetu Poznańskiego 2, 61-614 Poznań, Poland., Roubeau O; Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC and Universidad de Zaragoza, Plaza San Francisco s/n, 50009, Zaragoza, Spain., Cornia A; Dipartimento di Scienze Chimiche e Geologiche e UdR INSTM, Università degli Studi di Modena e Reggio Emilia, via G. Campi 103, 41125 Modena, Italy. acornia@unimore.it., Novikov V; Departament de Química Inorgànica i Orgànica, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain. aromi@ub.edu.; Institute of Nanoscience and Nanotechnology of the University of Barcelona (IN2UB), Barcelona, Spain., Barrios LA; Departament de Química Inorgànica i Orgànica, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain. aromi@ub.edu.; Institute of Nanoscience and Nanotechnology of the University of Barcelona (IN2UB), Barcelona, Spain., Aromí G; Departament de Química Inorgànica i Orgànica, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain. aromi@ub.edu.; Institute of Nanoscience and Nanotechnology of the University of Barcelona (IN2UB), Barcelona, Spain.
Jazyk: angličtina
Zdroj: Dalton transactions (Cambridge, England : 2003) [Dalton Trans] 2024 Jul 23; Vol. 53 (29), pp. 12301-12306. Date of Electronic Publication: 2024 Jul 23.
DOI: 10.1039/d4dt01611d
Abstrakt: Two new paramagnetic supramolecular helicates with the formula (X@[Ni 2 L 3 ]) 3+ (X = Cl, or Br; L = a bis-pyrazolylpyridine ligand) have been prepared and are described. Helicates of this metal are very rare with virtually no prior examples of them acting as hosts of anionic species. The persistence of the new assemblies in solution has been demonstrated unambiguously by mass spectrometry and paramagnetic 1 H NMR. This has allowed us to establish the preference of the coordination [Ni 2 ] host for Cl - over Br - , in agreement with DFT calculations. These results show the promise of the use of metallohelicates as suitable systems for the selective encapsulation of specific anions in solution.
Databáze: MEDLINE
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