We report the synthesis, structural characterization, and functionality (framework interconversions together with proton conductivity) of an open-framework hybrid that combines Ca2+ ions rigid polyfunctional ligand 5-(dihydroxyphosphoryl)isophthalic acid (PiPhtA). Ca2[(HO3PC6H3COOH)2]2[(HO3PC6H3(COO)2H)(H2O)2]·5H2O (Ca-PiPhtA-I) is obtained by slow crystallization at ambient conditions from acidic (pH ≈ 3) aqueous solutions. It possesses a high water content (both Ca coordinated in lattice),...

The chemistry of metal phosphonates has been progressing fast with the addition new materials that possess novel structural features and properties, occasionally in a cooperative manner. In this paper, we report family functional lanthanide-carboxyphosphonate materials. Specifically, lanthanide is La, Ce, Pr, Sm, Eu, Gd, Tb, or Dy carboxyphosphonate ligand 2-hydroxyphosphonoacetic acid (H3HPA). All reported LnHPA compounds, Ln3(H0.75O3PCHOHCOO)4·xH2O (x = 15–16), crystallize orthorhombic...

Multifunctional materials, especially those combining two or more properties of interest, are attracting immense attention due to their potential applications. MOFs, metal organic frameworks, can be regarded as multifunctional materials if they show another useful property in addition the adsorption behavior. Here, we report a new light hybrid, MgH6ODTMP·2H2O(DMF)0.5 (1), which has been synthesized using tetraphosphonic acid H8ODTMP,...

A new flexible ultramicroporous solid, La(H(5)DTMP)·7H(2)O (1), has been crystallized at room temperature using the tetraphosphonic acid H(8)DTMP, hexamethylenediamine-N,N,N',N'-tetrakis(methylenephosphonic acid). Its crystal structure, solved by synchrotron powder X-ray diffraction, is characterised a 3D pillared open-framework containing 1D channels filled with water. Upon dehydration, related crystalline phase, La(H(5)DTMP) (2) formed. Partial rehydration of 2 led to La(H(5)DTMP)·2H(2)O...

The structural and functional chemistry of a family alkali-metal ions with racemic R,S-hydroxyphosphonoacetate (M-HPAA; M = Li, Na, K, Cs) are reported. Crystal structures were determined by X-ray data (Li+, powder diffraction following an ab initio methodology; Na+, K+, Cs+, single crystal). A gradual increase in dimensionality directly proportional to the alkali ionic radius was observed. [Li3(OOCCH(OH)PO3)(H2O)4]·H2O (Li-HPAA) shows 1D framework built up Li-ligand "slabs" Li+ three...

Two new families of divalent metal hybrid derivatives from the aromatic tetraphosphonic acids 1,4- and 1,3-bis(aminomethyl)benzene-N,N'-bis(methylenephosphonic acid), (H2O3PCH2)2-N-CH2C6H4CH2-N(CH2PO3H2)2 (designated herein as p-H8L m-H8L) have been synthesized by crystallization at room temperature hydrothermal conditions. The crystal structures M[(HO3PCH2)2N(H)CH2C6H4CH2N(H)(CH2PO3H)2(H2O)2]·2H2O (M = Mg, Co, Zn), M-(p-H6L), M[(HO3PCH2)2N(H)CH2C6H4CH2N(H)(CH2PO3H)2]·nH2O Ca, Zn n 1-1.5),...

Metal phosphonates containing acidic groups exhibit a wide range of proton conduction properties, which may enhance the performance membrane electrode assemblies (MEAs). In this work, focus is placed on properties coordination polymers derived from combination lanthanide ions with phosphonate derivative taurine (2-[bis(phosphonomethyl)amino]ethanesulfonic acid, H5SP). High-throughput hydrothermal screening (140 °C) was used to reach optimal synthesis conditions and access pure crystalline...

The structures of various layered calcium tetraphosphonates (CaH6DTMP; H8DTMP=hexamethylenediamine tetrakis(methylenephosphonic acid)), have been determined. Starting from CaH6DTMP.2H2O, thermal treatment and subsequent exposure to NH3 and/or H2O vapors led four new compounds that showed high storage capacity guest species between the layers (up ten H2O/NH3 molecules) a maximum volume increase 55 %. basic building block for these phosphonates consists an eight-membered ring chelating Ca2+...

Different novel coordination polymers containing zinc, 1-4, and copper, 5-8, metals, connected via chiral imidazolium-based dicarboxylate ligands, [LR]-, were isolated by reaction between zinc acetate or copper enantiomerically pure HLR compounds. They characterised structurally identified X-ray diffraction methods (single crystal powder). These compounds are two-dimensional homochiral polymers, [M(LR)2]n, in which the metal ions coordinated two carboxylate groups of [LR]- anions a general...

This work deals with the synthesis and characterization of one-dimensional (1D) imidazole-containing etidronates, [M2(ETID)(Im)3]·nH2O (M = Co2+ Ni2+; n 0, 1, 3) [Zn2(ETID)2(H2O)2](Im)2, as well corresponding Co2+/Ni2+ solid solutions, to evaluate their properties multipurpose materials for energy conversion processes. Depending on water content, metal ions in isostructural Ni2+ derivatives are octahedrally coordinated (n or consist octahedral together dimeric trigonal bipyramidal 1) square...

In this paper we report a crystal growth method for metal phosphonate frameworks in alginate gels. It consists of metal-containing gel, which solution ligand is slowly diffused. Crystals products are formed inside the gel. We have applied variety ions (alkaline-earth metals, transition metals and lanthanides) number polyphosphonic acid mixed carboxy/phosphonic ligands.

R,S-Hydroxyphosphonoacetic acid (H3HPA) is an inexpensive multidentate organic ligand widely used for the preparation of organo-inorganic hybrid materials. There are reports several crystal structures and variability resulting frameworks strikingly high, in contrast with simplicity ligand. In attempt to investigate rationalize some salient structural features structures, we have carried out a systematic high-throughput study reaction H3HPA Ca2+ aqueous solutions (pH values ranging 1.0−7.5)...

Reactions of divalent cations (Mg2+, Co2+, Ni2+, and Zn2+) with R,S-hydroxyphosphonoacetic acid (HPAA) in aqueous solutions (pH values ranging 1.0−4.0) yielded a range crystalline hydrated M-HPAA hybrids. One-dimensional (1D) chain compounds were formed at room temperature whereas reactions conducted under hydrothermal conditions resulted two-dimensional (2D) layered frameworks or, some cases, three-dimensional (3D) networks incorporating various alkaline cations. 1D phases compositions...

A family of M-VP (M = Ni, Co, Cd, Mn, Zn, Fe, Cu, Pb; VP vinylphosphonate) and M-PVP Cd; PVP phenylvinylphosphonate) materials have been synthesized by hydrothermal methods characterized FT-IR, elemental analysis, thermogravimetric analysis (TGA). Their structures were determined either single crystal X-ray crystallography or from laboratory powder diffraction data. The structure some is two-dimensional (2D) layered, with the organic groups (vinyl phenylvinyl) protruding into interlamellar...

The synthesis, structural characterization, topological analysis, proton conductivity, and catalytic properties are reported of two Cu(II)-based compounds, namely a dinuclear Cu(II) complex [Cu2(μ-VPA)2(phen)2(H2O)2]·8H2O (1) (H2VPA = vinylphosphonic acid, phen 1,10-phenanthroline) 1D coordination polymer [Cu(μ-SO4)(phen)(H2O)2]∞ (2). Their features H-bonding interactions were investigated in detail, showing that the metal-organic structures 1 2 extended by multiple hydrogen bonds to more 2D...

We report the synthesis, physicochemical characterization, and crystal structure of Cu-SP (SP = styrylphosphonic acid, H 2 O 3 PCH=CH (C 6 5 )), first reported example a metal derivative SP.The starting SP acid was fully characterized by X-ray single-crystal diffractometry, elemental analysis H), 31 P-NMR, 13 C-NMR, 1 H-NMR, HPLC, UV-vis, MS, TG, FT-IR spectroscopy.The copper(II) synthesized DTA-TG FT-IR, also its determined from powder data.The refined Rietveld method.The shows layered 2-D...

In this paper we report the synthesis and structural characterization of 2D layered coordination polymer Mg(BPMGLY)(H 2 O) (BPMGLY = bis-phosphonomethylglycine, (HO 3 PCH ) N(H)COO 2-).The Mg ion is found in a slightly distorted octahedral environment formed by four phosphonate oxygens two water molecules.The carboxylate group deprotonated but noncoordinated.This compound useful starting material for number topotactic transformations.Upon heating at 140 °C one (of two) Mg-coordinated...

A family of alkali metal-based frameworks containing the tetraphosphonate linker hexamethylenediamine-<italic>N</italic>,<italic>N</italic>,<italic>N</italic>′,<italic>N</italic>′-<italic>tetrakis</italic>(methylenephosphonic acid), HDTMP, exhibiting rich structural diversity and water-dependent proton conductivity.

A major challenge in studying nanomaterials' ecotoxicology is lack of reliable techniques to measure available concentrations these materials the environment.

Structurally versatile divalent metal phosphinates are studied as precursors of electrocatalysts (Co²⁺) for the OER and ORR.

The structure of π-Ti₂O(PO₄)₂·2H₂O was determined by the SR-PXRD method. proton conductivity chitosan/π-TiP membranes reached 4.5 × 10⁻³ S cm⁻¹ at 95%-RH.

Abstract The structural variability of two series Mg 2+ - and Zn 2-hydroxyphosphonoacetates have been studied in the range 25–80°C 95% relative humidity order to correlate structure with proton conductivity properties. In addition selected previously reported 1D, 2D 3D materials, a new compound, KZn 6 (OOCCH(OH)PO 3 ) 4 (OH)·5H 2 O (KZn -HPAA-3D), has prepared thoroughly characterized. crystal this solid, solved ab initio from synchrotron X-ray powder diffraction data, consists negatively...

Metal phosphonate-carboxylate compounds represent a promising class of materials for proton conduction applications. This study investigates the structural, thermal, and properties three groups lanthanide-based derived from 5-(dihydroxyphosphoryl)isophthalic acid (PiPhtA). The crystal structures, solved