Hydrothermal synthesis and structural characterization of a tubular oxovanadium organophosphonate, (H3O)[(V3O4)(H2O)(PhPO3)3]·xH2O(x = 2.33)

Abstract

The hydrothermal reaction of KVO 3 , PhPO 3 H 2 and water at 180 °C for 116 h yields the tubular mixed valence V V /V IV polymer (H 3 O)[(V 3 O 4 )(H 2 O) (PhPO 3 ) 3 ]•xH 2 O (x = 2.33).

Synthesis and Structures of a Layered and a Tubular Antimony(III) Phosphonate

“…5). It is similar to reported tubular uranyl (24) and vanadium phenylphosphonates (25) in that terminal organic groups lie outside the channels rather than inside (as in the reported framework monophosphonates) (20}23). 2 is not appreciably soluble in water, simple alcohols, or acetone, probably due to bonding interactions be- (Fig.…”

“…It should be emphasized that the tubular material (2) is produced with greater selectivity over the layered material (1) in ethanol compared to ethylene glycol (39). In contrast, for both tubular phenylphosphonates it was suggested the high dielectric constant of water promotes the synthesis of the tubular material, since syntheses in nonaqueous solvents were unsuccessful (25,40). In all three phosphonate systems, the introduction of a small cation favors a tubular material over a layered material.…”

Open‐Framework Structures of Transition‐Metal Compounds

“…The phosphonate group, RPO 3 2À , with its lower charge and connectivity can form interesting networks, similar to the phosphite group discussed above. [99] There are only a few reports of zero-dimensional, [100] and one-dimensional [101] monophosphonates. Thus, the use of monophosphonates always resulted in lower-dimensional structures and in particular, layered ones.…”

Persistent Honeycomb Structures in Porous and Other Two-Component Solids

“…In Figure 5 we give a few examples. One sees in Figure 5a [18] a zinc phosphate where the two components are an inorganic crystalline backbone and solvent, in Figure 5b [19] a lead(II) iodide ion wrapped by six aromatic bipyridinium molecules, in Figure 5c [20] a hydrophilic vanadyl phosphate to which hydrophobic phenyl groups have been added, and finally in Figure 5d Cs 7 O, a remarkable solid that contains channels of ionic Cs 11 O 3 clusters in a hexagonal matrix of metal±metal bonded Cs atoms. [21] The view adopted in this paper, that one should concentrate on the interfacial patterns, [22,23] contrasts sharply from the approach taken in most small-molecule organic solid-state chemistry.…”