100134-03-0Relevant academic research and scientific papers
Ring-Opening Polymerization of Cyclic Phosphonates: Access to Inorganic Polymers with a PV-O Main Chain
Arz, Marius I.,Annibale, Vincent T.,Kelly, Nicole L.,Hanna, John V.,Manners, Ian
, p. 2894 - 2899 (2019/03/05)
We describe a new class of inorganic polymeric materials featuring a main chain consisting of PV-O bonds and aryl side groups, which was obtained with >70 repeat units by ring-opening polymerization of cyclic phosphonates. This monomer-polymer system was found to be dynamic in solution enabling selective depolymerization under dilute conditions, which can be tuned by varying the substituents. The polymers show high thermal stability to weight loss and can be easily fabricated into self-standing thin films. Structural characterizations of the cyclic 6-and 12-membered ring precursors are also described.
High nuclearity (octa-, dodeca-, and pentadecanuclear) metal (M = Co II, NiII) phosphonate cages: Synthesis, structure, and magnetic behavior
Sheikh, Javeed Ahmad,Adhikary, Amit,Jena, Himanshu Sekhar,Biswas, Soumava,Konar, Sanjit
, p. 1606 - 1613 (2014/03/21)
The synthesis, structural characterization, and magnetic property studies of five new transition metal (M = Co, Ni) phosphonate-based cages are reported. Three substituted phenyl and benzyl phosphonate ligands [RPO3H 2; R1 = p-tert-butylbenzyl, R2 = p-tert-butylphenyl, R3 = 3-chlorobenzyl] were synthesized and employed to seek out high-nuclearity cages. Complexes 1-3 are quasi-isostructural and feature a dodecanuclear metal-oxo core having the general molecular formula of [M12(μ3-OH)4 (O3PR)4(O2CtBu)6 (HO 2CtBu)6(HCO3)6] {M = Co, Ni and R = R1 for 1 (Co12), R2 for 2, 3 (Co12, Ni12)}. The twelve metal centers are arranged at the vertices of a truncated tetrahedron in a manner similar to Keggin ion. Complex 4 is an octanuclear nickel phosphonate cage [Ni8(μ 3-OH)4 (OMe)2(O3PR1) 2 (O2CtBu)6(HO2C tBu)8], and complex 5 represents a pentadecanuclear cobalt phosphonate cage, [Co15(chp)8(chpH) (O3PR 3)8(O2CtBu)6], where chpH = 6-chloro-2-hydroxypyridine. Structural investigation reveals some interesting geometrical features in the molecular cores, which may provide new models in single molecular magnetic materials. Magnetic property measurements of compounds 1-5 indicate the coexistence of both antiferromagnetic and ferromagnetic interactions between magnetic centers for all cages.
Studies on Organophosphorus Compounds XL. A One-Pot Procedure for the Mono-O-Alkylation of Phosphonic Acid: A Facile Synthesis of Alkyl Hydrogen p-Substituted Phenylphosphonates
Yuan, Chengye,Feng, Hanzhen
, p. 140 - 141 (2007/10/02)
A one-pot procedure is described for the synthesis of hexyl hydrogen p-substituted phenylphosphonates 4 in moderate yield based on the mono-O-alylation of bis(tetramethylammonium) salts of dibasic phosphonic acids 3.
