Three-component 1D and 2D metal phosphonates: structural variability, topological analysis and catalytic hydrocarboxylation of alkanes

Abstract

New metal–organic materials were synthesized based on diphosphonates. They possess interesting structural/topological features, and exhibit substantial catalytic activity in the hydrocarboxylation of alkanes.

Manganese Fluorene Phosphonates: Formation of Isolated Chains

“…The shape index mapping S, shown in Equation 3, allows the observation of the principal curves (κ1, κ2) on the surface shape of the dimethyl fluorene part, such as complementary bumps (blue spots) and hollows (red spots) which are observed when two molecular surfaces are in contact. The presence of the pattern formed by spread blue and red triangles in the same area reveals the existence of weak π-π interactions in the dimethyl fluorene moieties, as seen in Figure 3, as it was also reported in other metal phosphonate [39]. In this compound weak π-π interactions with an angle of 32° between two conjugated rings (pink colored, orientation I) are observed in Figure 1c.…”

Platonic Relationships in Metal Phosphonate Chemistry: Ionic Metal Phosphonates

“…In spite of the absence of any electron-withdrawing moieties in H 2 EDPA 2− it still remained non-coordinated in the Ni-EDPA salt. This has been observed before in the salt [Ni(2,2'-bpy)(H 2 O) 4 ]·[H 2 EDPA] [51]. Similarly, in the cationic coordination polymer Ni-bpy-EDPA the Ni 2+ center was coordinated by four water molecules at equatorial positions, whereas the axial positions were occupied by the N atom of the bridging 4,4'-bpy ligand, leaving the H 2 EDPA 2-diphosphonate to play the role of the counterion for the cationic 1D chain.…”

CuII Frameworks from Di‐2‐pyridyl Ketone and Benzene‐1,3,5‐triphosphonic Acid

“…On the other hand, metal phosphonates have been studied since the 1970s and have been shown to be versatile materials for a range of applications, including intercalation chemistry, ion‐exchange reactions, solid‐state proton conductivity and heterogeneous catalysis . It is worth noting that none of these applications strictly demands porous materials.…”

“…The magnetic properties of the coordination polymer were rationalized on the basis of magnetically isolated [Cu On the other hand, metal phosphonates [4] have been studied since the 1970s and have been shown to be versatile materials for a range of applications, including intercalation chemistry, [5] ion-exchange reactions, [6] solid-state proton conductivity [7] and heterogeneous catalysis. [8] It is worth noting that none of these applications strictly demands porous materials. Although the literature on metal phosphonate materials is fairly extensive, the vast majority of compounds are non-porous coordination polymers and, to a much lesser extent, clusters and MOFs.…”