Synthesis and structural characterization of a homologous series of divalent-metal phosphonates, MII(O3PR).cntdot.H2O and MII(HO3PR)2

Abstract

Layered phosphonate salts of divalent metal ions (Mg, Mn, Zn, Ca, Cd) are precipitated by combining aqueous solutions of a phosphonic acid and a soluble metal salt. In this way compounds in the series M(03C^72n+i)'H20 (

Synthesis, Structure, and Magnetism of a Highly Thermally Stable Microporous Metal Organodiphosphonate with Reversible Dehydration/Rehydration Behavior

“…Interestingly, the structure consists of infinite inorganic layers of corner-sharing CoO 6 octahedra, which is totally different from other reported metal phosphonates using p-xylylenediphosphonate as the ligand. [24] The coordination between the cobalt atoms and the PO 3 groups in the compound is similar to that found in Mn(C 6 H 5 PO 3 )·H 2 O [17] or Zn(C 6 H 5 PO 3 )·H 2 O, [20] but these are 2D layered structures and the former is a 3D pillared layered structure. As shown in Figure 2a, such a compound is a rare example of a hybrid metal oxide containing an infinite 2D -M-O-M-O-net framework.…”

“…[14][15][16] Because the metal polyhedra are bridged by phosphonic tetrahedra to form two-dimensional layers, many M II (RPO 3 )·H 2 O compounds are two-dimensional structures, with the metal/PO 3 layer arrangement and the adsorption behavior of some dehydrated layered phosphates reported in the literature. [17][18][19][20][21] The hydrothermal method has proved to be a promising technique in the preparation of highly stable and infinite metal-ligand frameworks. [22,23] The organophosphorus compound p-xylylenediphosphonate, which possesses much longer chains and a more rigid framework, has been used successfully in the hydrothermal synthesis of diphosphonates.…”

meta‐Phosphonobenzoic Acid: A Rigid Heterobifunctional Precursor for the Design of Hybrid Materials

“…This arrangement is similar to the VPO 8 units seen in the Li 2 VO 2 PO 4 frameworks or within the layers of M II (RPO 3 )·H 2 O series reported in the literature. [18] This latter bonding distorts the perovskite layer by a drastic tilt of the octahedra versus the plane containing the metals. Following the nomenclature proposed by Cheetham, Rao and Feller [1] to describe the dimensionality of hybrid materials, compounds 3, 4 and 5 are 2D with regard to the inorganic (I 2 ) part owing to the infinite metal-oxygen-metal networks in two directions (ac planes).…”

Critical evaluation of stability constants of phosphonic acids (IUPAC Technical Report)

“…Uses of organophosphonates span applications in flame-resistant polymers [88RD], photographic processing [88HK], ore flotation (aminophosphonic surfactants) [87CC], actinide separation processes [94N,93LS,93NR,90HD], and analytical chemistry [87VW,85AL]. Recently, organophosphonates have been identified as promising reagents for the creation of so-called "structurally tailored" materials [92BV,92ZC,91CM,88CL] and …”