Stable organic derivatives of heteropoly anions, pentamolybdobisphosphonates

Chirality in Polyoxometalate Chemistry

“…Spontaneous resolution was observed in one system 80. The same Mo 5 ring can be capped with phosphonate groups81,82 or by sulfate 83. Yamase prepared the adenosine‐5′‐monophosphate capped structure (Figure 6).…”

Hydrothermal synthesis of a one-dimensional bimetallic, mixed valence oxide [{Cu 4 (terpy) 4 (PO 4 )(H 2 O) 2 }{W 10 (VI)W 2 (V)O 36 (PO 4 )}] · 5H 2 O, a material constructed from {PW 12 O 40 } 5− and novel {Cu 4 (terpy) 4 (PO 4 )(H 2 O) 2 } 5+ cluster building blocks

“…One attractive approach exploits molecular building blocks in the form of chemically robust polyoxoanions [4,5] embedded within coordination complex cationic polymers or linked through direct condensation, organic tethers or secondary metal-ligand coordination complexes acting as organic-inorganic bridging subunits [6][7][8][9][10][11][12][13]. In this respect, we have recently demonstrated that the ''venerable'' molybdophosphonate clusters [14] of the type [Mo 5 O 15 (O 3 PR) 2 ] 4À are linked into one-, two-or three-dimensional organic-inorganic oxides through tethering of the organophosphonate components by appropriate organic spacers [15][16][17]. In an attempt to extend this chemistry to the oxotungstate/phosphate and phosphonate families [18], the hydrothermal reactions of tungsten oxides with phosphonic acid and various organophosphonates in the presence of Cu(II)-polyimine ligands are under investigation.…”

Synthesis and structural characterization of polyoxometalates incorporating with anilinium cations and facile preparation of hybrid film

“…The larger splitting (Dm = 43 cm À1 ) of the m(PAO) band than that for the TBA salt (Dm = 34 cm À1 ) is ascribable to the attachment of an aqua-ligand to Cu(II) in 1 [20]. The spectrum of 2 includes peaks in the 400-1200 cm À1 region that are characteristic of the Strandberg-type pentamolybdodiphospate [(PO 4 ) 2 Mo 5 O 15 ] 6À [23]. The bands centered at 1632 and 1574-1578 cm À1 were commonly observed for 1 and 2.…”