Synthesis, spectroscopy and magnetism of transition-metal complexes with pyridylmethylphosphonate ligands

trans-Diaquatetrakis(3,5-dimethylpyrazole-N2)nickel(II) dichloride

“…In recent years, we have investigated the coordination chemistry of metal complexes with N-containing heterocyclic derivatives (Driessen et al, 1988;Maøecka et al, 1998;Ochocki et al, 1990Ochocki et al, , 1992Ochocki et al, , 1997 because of expected pharmacological activity by analogy to cis-platinum complexes (Hollis, 1989;Reedijk, 1996). Previous studies on this kind of complex showed their signi®cant role in biological processes, which is often related to their coordination ability towards transition metal ions (Ochocki et al, 1998).…”

1H, 13C and 31P NMR spectral analysis of monoalkyl (α‐anilinobenzyl)phosphonates and their dipalladium(II) metallocyclic complexes

“…5 -7 Further, the complexation capability of aminophosphonates towards numerous metal ions allow the application of selected derivatives as catalysts, extractants, ion exchangers, etc. 8,9 As a part of our systematic investigation of the complexing properties of various aminophosphonic acid derivatives towards palladium(II) ion, 6,7,10,11 we recently reported the synthesis and some spectroscopic and thermal properties of the [N,O] metallocyclic dipalladium(II) complexes of monoethyl (HL1) and monobutyl (HL2) esters of (˛-anilinobenzyl)phosphonic acid. 12 In these binuclear complexes, Pd 2 L 4 L D L1, L2 , four organophosphorus ligands bridge two palladium atoms by bonding through the aniline nitrogen and the deprotonated phosphonic acid oxygen.…”

Supramolecular bidentate amine derivatives of copper(ii) organophosphonatesElectronic Supplementary Information (ESI) available: 3D images for compound 1 and compound 2. See http://www.rsc.org/suppdata/ce/b4/b400064a/

“…1 Since then, copper(II) organophosphonates and diphosphonates have been investigated extensively, with particular attention paid to the methyl-and phenyl-phosphonates, which often form layered structures. [2][3][4][5][6][7][8][9][10][11][12][13] Recent research has been directed towards intercalation of other species, particularly amines, between the layers of the copper organophosphonate network. 14 The driving force for such research has been the promise of tuneable functionality within the structure, and hence modification of its properties, and also the observation that the host compound, Cu(O 3 PC 6 H 5 )?H 2 O, loses water on heating to leave an open co-ordination site available for reaction.…”

“…large-scale extended structures held together by intermolecular interactions, such as hydrogen bonding and p-p interactions, rather than being covalently bound. It is well known that metal organophosphonate materials can adopt a wide variety of motifs: such as chains, 2,4 networks, [9][10][11][12][13] and lamellar-type (layered) complexes, 3,[5][6][7][8] but rapid progress in this field has overshadowed the potential of organic phosphorus acids, such as phenylphosphonic acid, to participate in the assembly of hydrogen-bonded arrays. [19][20][21][22]…”