45986-31-0

Upstream product

• 1754-49-0 diethyl phenylphosphonate 
• 7732-18-5 water 
• 638-38-0 manganese(II) acetate 
• 1571-33-1 phenylphosphonate 
• 16397-91-4 manganese(II) 

Relevant academic research and scientific papers

Tailoring the photoluminescence properties of transition metal phosphonates

A series of phenylphosphonates, Zn1-xMnx(O 3PC6H5)·H2O, where x = 0, 0.005, 0.25, 0.5, 0.75 and 1.0, has been prepared and their photoluminescence responses studied. The presence of Mn in the sample results in a red emission, whilst when x = 0 the emission is green. Levels of Mn 6(m-O3PC6H 4CO2)2 has been prepared by hydrothermal reaction of Ag(NO3) and m-phosphonobenzoic acid. The material has a 1D channel structure in which the channels are lined with the phenyl groups. Ag6(m-O3PC6H4CO2) 2 shows a green luminescence response to laser excitation, whilst the related Zn material, Zn3(m-O3PC6H 4CO2)2, shows an unusual yellow emission.

Selected-control synthesis of metal phosphonate nanoparticles and nanorods

By surfactant-assisted methods, nanoscale Co(O3PC 6H5)·H2O species of different morphologies, namely, nanoparticles and nanorods, have been successfully synthesized and characterized. Upon removal of the organic

Layered mixed-metal phenylphosphonates, MnxCo1-x(O3PC6H 5)·H2O: Structure and magnetic properties

Mixed metal phenylphosphonates of composition MnxCo1-x(O3PC6H 5)·H2O were prepared with 0≤ x ≤ 1. Atomic absorption, X-ray powder diffraction, and electron paramagnetic resonance measurements indicate that the mixed-metal solid solutions are homogeneous and isostructural with the single-metal-parent compounds over the entire concentration range, with a small, systematic evolution of the a and c in-plane unit cell parameters. The temperature dependence of the magnetic data for the pure Mn2+ (x=1) and pure Co2+ (x=0) samples was fitted by standard 2D Heisenberg and 2D Ising models, respectively, yielding nearest-neighbor exchange interaction energies of J = -2.27±0.02 K for Mn(O3PC6H5)·H2O and J = -2.43±0.05 K for Co(O3PC6H5)·H2O. The magnetic phase diagram, down to 2 K, was constructed over the entire composition range. Both dc and ac magnetic susceptibilities were used to identify the transitions to low temperature, long-range-ordered antiferromagnetic states. In the Mn2+- and Co2+-rich regions, the ordering temperature, TN, decreases relative to the pure materials, as expected for magnetic ion impurity doping. For intermediate values of x, Mn2+-Mn2+ interactions dominate, resulting in a minimum in TN near x = 0.25. A weak negative magnetization was observed for x ≤ 0.25. No evidence of spin glass behavior was observed for any concentration at any temperature.

Synthesis and structural characterization of a homologous series of divalent-metal phosphonates, MII(O3PR)·H2O and MII(HO3PR)2

Layered phosphonate salts of divalent metal ions (Mg, Mn, Zn, Ca, Cd) are precipitated by combining aqueous solutions of a phosphonic acid and a soluble metal salt. In this way compounds in the series M(O3CnH2n+1)·H2O (M = Mg, Mn, Zn, n = 1-12; M = Ca, Cd, n = 1-4), M(O3PC6H5)·H2O (M = Mg, Mn, Zn), Ca(HO3PC6H5)2, and Ca(HO3PCnH2n+1)2 (n ≥ 5) were prepared. These compounds are insoluble in water at pH 7 but dissolve in dilute acid solutions. A preliminary X-ray structure for Mn(O3PC6H5)·H2O, refined in the orthorhombic space group Pmn21 with Z = 2 and a = 5.734 (5), b = 14.33 (3), and c = 4.945 (4) A?, is reported. The structure consists of layers of Mn atoms coordinated octahedrally by five phosphonate oxygen atoms and one water molecule. Each phosphonate group coordinates four Mn atoms, making a cross-linked Mn-O network. The phenyl groups lie above and below these approximately planar networks and make van der Waals contacts between layers. Compounds in the M(O3PCnH2n+1)·H2O (M = Mg, Mn, Zn) and M(O3PC6H5)·H2O (M = Mg, Zn) series crystallize in Pmn21 with a = 5.61-5.74 and c = 4.78-4.82 A? and with b varying according to the size of the alkyl or phenyl group. A structural model for these compounds is discussed.