RT Journal Article
T1 High-Throughput Synthesis of Pillared-Layered Magnesium Tetraphosphonate Coordination Polymers: Framework Interconversions and Proton Conductivity Studies
A1 Pérez-Colodrero, Rosario Mercedes
A1 Salcedo, Inés R.
A1 Bazaga-García, Montse
A1 Barouda, Eleni
A1 Papadaki, Maria
A1 Papathanasiou, Konstantinos E.
A1 Hernández Alonso, Daniel
A1 Rius, Jordi
A1 García-Aranda, Miguel Ángel
A1 Ramírez-Losilla, Enrique
A1 Olivera-Pastor, Pascual
A1 Demadis, Konstantinos D.
A1 Cabeza-Díaz, Aurelio
K1 Conductividad eléctrica
K1 Fósforo - Compuestos
K1 Polímeros organometálicos
K1 Pilas de combustible
AB Novel pillared-layered framework materials were synthesized by high-throughputor microwave-assisted methodology that contain Mg2+ and the zwitterionic linker HDTMP(hexamethylenediamine-N,N,N0,N0-tetrakis(methylenephosphonic acid)). Three compounds werestructurally characterized by X-ray powder diffraction. In the compound {Mg[(HO3PCH2)2N(CH2)6N(CH2PO3H2)2](H2O)}n(1), obtained at 140 ºC by hydrothermal or microwave-assisted reaction,the layers are built by isolated Mg2+ octahedra coordinated by oxygen atoms from six differentzwitterionic HDTMP ligands. Each amino-bis(methylenephosphonate) moiety links three Mg2+ ions,bridging two of them through one phosphonate group and connecting the third polyhedron in amonodentate fashion. In Compound 2, {Mg[(HO3PCH2)2N(CH2)6N(CH2PO3H2)2]}n, hydrothermallysynthesized at 180  C, the layers are composed of bidentate amino-bis(methylenephosphonate)moieties connected to three Mg2+ ions, with one of the phosphonate groups actingas a bridging ligand. Various subtle structural changes are noted for the other twocompounds. Thermodiffraction of 1 reveals that a crystalline-to-crystalline phase transformationoccurs concomitantly with its dehydration, leading to a new anhydrous phase, namely,{Mg[(HO3PCH2)2N(CH2)6N(CH2PO3H2)2]}n(1deh). This process is fully reversible uponequilibrating the solid at room temperature. The reported compounds can adsorb ammonia and CO2.Compound 1 exhibits a moderate proton conductivity, ~1.5 x 10-5 S·cm-1 at 80 ºC and 95% RH, thatincreases a half order of magnitude after experiencing a complete dehydration/rehydration process.
PB MDPI, www.mdpi.com/journal/inorganics
YR 2018
FD 2018-09-11
LK https://hdl.handle.net/10630/20997
UL https://hdl.handle.net/10630/20997
LA eng
NO Colodrero, R., Salcedo, I., Bazaga-García, M., Barouda, E., Papadaki, M., Papathanasiou, K., Hernández-Alonso, D., Rius, J., Aranda, M., Losilla, E., Olivera-Pastor, P., Demadis, K., & Cabeza, A. (2018). High-Throughput Synthesis of Pillared-Layered Magnesium Tetraphosphonate Coordination Polymers: Framework Interconversions and Proton Conductivity Studies. Inorganics, 6(3), 96–. https://doi.org/10.3390/inorganics6030096
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 19 ene 2026