Nouveaux squarates et sulfates de néodyme

Abstract

The aim of this work was to synthesize, by soft and hydrothermal means, MOFs structures, based on lanthanides and squarate on the one hand, and inorganics structures of lanthanide sulfates, on the second hand. The compounds obtained were characterized by single-crystal X-ray diffraction, infrared spectroscopy and thermal decomposition analyses (ATG/ATD). Four structures were obtained; two of them are Ln-MOF structures of neodymium squarate and two structures of neodymium sulfates. The first compound ([Nd2(H2O)10(C4O4)3],-(NH4)2(C4O4))n, has a network consisting of alternating layers of neodymium squarate and the layers of ammonium cation and free squarate ions, (Nd- MOFs / Salt). This species was then studied for their catalytic property on the cyanosilylation reaction. The two other sulfate-based inorganic structures, the crystalline arrangement for these structures develops in the form of polymeric inorganic layers extending on the ac plane, and arranged in an zigzag manner, interconnected to form a three-dimensional network by hydrogen bonds O-- H...H.