Four Strandberg-type polyoxometalates with organophosphine centre decorated by transition metal-2,2'-bipy/H2O complexes

Assembly of a coordination polymer with sulphate-capped pentamolybdate units and copper: synthesis, structure, magnetic and catalytic studies

“…[62][63][64][65] Coordination polymers with pentamolybdate {Mo 5 O 15 } ions as nodes and transition-metal groups as linkers have been extensively reported in the literature, wherein the exposed atom of the hetero-atom cluster is sometimes used for additional bonding and the formation of extended assemblies. [66][67][68] The first such examples of coordination polymeric frameworks incorporating the pentamolybdate unit and a transition metal were reported by Zubieta and co-workers in 2001, with two different compounds forming one-and two-dimensional extended assemblies, formulated as [{Cu(bpy) 2 }{Cu(bpy…”

“…2′bipyridine and tpypyz = tetra(2-pyridyl)pyrazine], respectively. 69 Subsequent reports of coordination polymers with the {Mo 5 O 15 (PO 3 X) 2 } (X = O, C) units have included other transition-metals, such as with manganese(II), 62 cobalt(II), 70,71 nickel(II), 70,72,73 copper (II), 62,70,[73][74][75][76][77][78][79][80][81] zinc(II), 82,83 and with silver(I), 84,85 along with organic amines as additional ligands.…”

“…Coordination polymers with pentamolybdate {Mo 5 O 15 } ions as nodes and transition-metal groups as linkers have been extensively reported in the literature, wherein the exposed atom of the hetero-atom cluster is sometimes used for additional bonding and the formation of extended assemblies. 66–68 The first such examples of coordination polymeric frameworks incorporating the pentamolybdate unit and a transition metal were reported by Zubieta and co-workers in 2001, with two different compounds forming one- and two- dimensional extended assemblies, formulated as [{Cu(bpy) 2 }{Cu(bpy)(H 2 O)}(Mo 5 O 15 ){O 3 P(CH 2 ) 4 PO 3 }]·H 2 O and [{(Cu 2 (tpypz)(H 2 O) 2 }(Mo 5 O 15 )(O 3 PCH 2 CH 2 PO 3 )]·5.5H 2 O [bpy = 2,2′bipyridine and tpypyz = tetra(2-pyridyl)pyrazine], respectively. 69 Subsequent reports of coordination polymers with the {Mo 5 O 15 (PO 3 X) 2 } (X = O, C) units have included other transition-metals, such as with manganese( ii ), 62 cobalt( ii ), 70,71 nickel( ii ), 70,72,73 copper( ii ), 62,70,73–81 zinc( ii ), 82,83 and with silver( i ), 84,85 along with organic amines as additional ligands.…”

pH-Controlled Assembly of Five New Organophosphorus Strandberg-Type Cluster-Based Coordination Polymers for Enhanced Electrochemical Capacitor Performance

“…The Strandberg-type POM cluster (e.g., [P 2 Mo 5 O 23 ] 6– , abbreviated as {P 2 Mo 5 }) is an important branch of POM chemistry because of its important properties, including high electron density, catalytic activity, easy modification, and size control, which have been gradually studied. − However, compared with other types of POMs, Strandberg-type POM clusters have not attracted enough attention. In recent years, Strandberg-type clusters as the parent inorganic skeletons have been introduced into the organic components. − It should be pointed out that the POMs containing the organophosphorus (RP) group have been studied much less frequently. Notably, the RP group has been successfully added to the Strandberg-type cluster as the central unit.…”

“…Zhou’s group has investigated the electrochemistry and electrocatalysis of the {P 2 Mo 5 } cluster linked by strontium ions to generate two-dimensional (2D) supramolecular layers, and the electrochemical analysis provides valuable information for intensive research of the CCPs based on the P 2 Mo 5 cluster . Zhu’s group reported TM-4,4′-bipyridine complex unit-decorated Strandberg-type organophosphomolybdate/phosphotungstate hybrids in 2014, and the acid catalytic performances of P 2 Mo 5 cluster coordination polymers were investigated. − As we know well, hydrothermal synthesis is an effective method for the preparation of new CCPs. Nevertheless, from a crystal engineering perspective, the structure control of CCPs by hydrothermal synthesis is still a great challenge. − Our group has concentrated on studying the structure and performance regulation of POM-based coordination polymers for several years.…”