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Title: A lamellar coordination polymer with remarkable catalytic activity
Author: Mendes, Ricardo F.
Antunes, Margarida M.
Silva, Patrícia
Barbosa, Paula
Figueiredo, Filipe
Linden, Anthony
Rocha, João
Valente, Anabela A.
Paz, Filipe A. Almeida
Issue Date: Sep-2016
Publisher: Wiley
Abstract: A positively charged lamellar coordination polymer based on a flexible triphosphonic acid linker is reported. [Gd(H4nmp)(H2O)2]Cl·2H2O (1) [H6nmp=nitrilotris(methylenephosphonic acid)] was obtained by a one-pot approach by using water as a green solvent and by forcing the inclusion of additional acid sites by employing HCl in the synthesis. Compound 1 acts as a versatile heterogeneous acid catalyst with outstanding activity in organic reactions such as alcoholysis of styrene oxide, acetalization of benzaldehyde and cyclohexanaldehyde and ketalization of cyclohexanone. For all reaction systems, very high conversions were reached (92–97%) in only 15–30 min under mild conditions (35 8C, atmospheric pressure). The coordination polymer exhibits a protonic conductivity of 1.23Õ10¢5 Scm¢1 at 98% relative humidity and 408C.
Peer review: yes
DOI: 10.1002/chem.201602157
ISSN: 0947-6539
Appears in Collections:CICECO - Artigos

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