Complex formation of copper(II), nickel(II) and zinc(II) with ethyl phosphonohydroxamic acid : solution speciation, synthesis and structural characterization
Ostrowska, M., Golenya, I. A., Haukka, M., Fritsky, I. O., & Gumienna-Kontecka, E. (2019). Complex formation of copper(II), nickel(II) and zinc(II) with ethyl phosphonohydroxamic acid : solution speciation, synthesis and structural characterization. New Journal of Chemistry, 26(43), 10237-10249. https://doi.org/10.1039/C9NJ01175G
Julkaistu sarjassa
New Journal of ChemistryTekijät
Päivämäärä
2019Tekijänoikeudet
© The Royal Society of Chemistry and the Centre National de la Recherche Scientifique 2019.
The first example of a Cu(II) 12-MC-4 hydroxamic metallacrown containing an ethylphosphonate group as an additional donor function in the β-position with respect to the hydroxamic group is described. The solution equilibrium of ethylphosphonoacetohydroxamic acid (PAHEt) with Cu(II) was investigated in aqueous solution by a combination of potentiometry, mass spectrometry, UV-Vis and EPR spectroscopies, and isothermal titration calorimetry. A model containing mononuclear [CuL], [CuL2]2− and [CuL2H−1]3− and pentanuclear [Cu5(LH−1)4]2− species is proposed. The predominance of the [Cu5(LH−1)4]2− species in solution over the pH range 4–9 was confirmed by the signals present in the ESI-MS spectra, as well as the absence of the EPR signal. In addition, the results of isothermal titration calorimetry indicated the stoichiometry of the complex form at pH 5.5 as 1.25. Even if forming a less stable MC complex, PAHEt offers the formation of 12-MC-4 in a broad pH range, which distinguishes it especially from α-aminohydroxamic acids. The compound corresponding to the pentameric metallacrown complex was isolated in the solid state as {Na4(H2O)6(Ac)[Cu5(PAHEt-3H)4(Ac)]}2·3H2O (1), whose crystal structure was determined by X-ray analysis. The centrosymmetric decanuclear complex anion of (1) consists of two pentanuclear 12-MC-4 fragments formed by five Cu(II) ions and four triply deprotonated residues of the phosphonoacetohydroxamate ligand, and is associated with eight sodium cations, two acetate anions and twelve water molecules taking part in sodium cation coordination, as well as solvate water molecules. The stability of MCs under conditions of competitive complex formation, as well as their reactivity with respect to a strong chelating agent, 2,2′-dipyridyl (dipy), was examined, and as a result a 1D coordination polymer featuring mixed-ligand mononuclear units {[Cu(dipy)(PAHEt-2H)]}n·1.86nH2O (2) was formed. In addition the chelating capacity of this ligand toward Ni(II) and Zn(II) ions was studied in solution.
...
![showless](/themes/JYX2//images/showless.png)
![showmore](/themes/JYX2//images/showmore.png)
Julkaisija
Royal Society of ChemistryISSN Hae Julkaisufoorumista
1144-0546Asiasanat
Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/30728086
Metadata
Näytä kaikki kuvailutiedotKokoelmat
Lisenssi
Samankaltainen aineisto
Näytetään aineistoja, joilla on samankaltainen nimeke tai asiasanat.
-
Synthesis, characterization and self-assembly of three dicyanamide bridged polynuclear copper(II) complexes with N2O donor tridentate Schiff bases as blocking ligands
Bhattacharyya, Anik; Ghosh, Biswa Nath; Rissanen, Kari; Chattopadhyay, Shouvik (Pergamon, 2016)Three copper(II) complexes [Cu(L1)(μ1,5-dca)]n (1), [Cu(L2)(μ1,5-dca)]n (2) and [Cu(L3)(μ1,5-dca)]n (3) [where HL1 = (1-(2-(dimethylamino)ethylimino)ethyl) naphthalene-1-ol, HL2 = (1-(2-(methylamino)ethylimino)ethyl) ... -
Formation, Structural Characterization, and Calculated NMR Chemical Shifts of Selenium-Nitrogen Compounds from SeCl4 and ArNHLi (Ar = supermesityl, mesityl)
Maaninen, Tiina; Tuononen, Heikki; Kosunen, Katja; Oilunkaniemi, Raija; Hiitola, Johanna; Laitinen, Risto; Chivers, Tristram (Wiley, 2004)Supermesityl selenium diimide [Se{N(C6H2 tBu3-2,4,6)}2; Se{N(mes*)}2] can be prepared in a good yield from the reaction of SeCl4 and (mes*)NHLi. The molecule adopts an unprecedented anti,anti-conformation, as deduced ... -
Synthesis of a labile sulfur-centred ligand, [S(H)C(PPh2S)2]-: structural diversity in lithium(i), zinc(ii) and nickel(ii) complexes
Thirumoorthi, Ramalingam; Chivers, Tristram; Häggman, Susanna; Mansikkamäki, Akseli; Morgan, Ian; Tuononen, Heikki; Lahtinen, Manu; Konu, Jari (RSC Publications, 2016)A high-yield synthesis of [Li{S(H)C(PPh2S)2}]2 [Li2·(3)2] was developed and this reagent was used in metathesis with ZnCl2 and NiCl2 to produce homoleptic complexes 4 and 5b in 85 and 93% yields, respectively. The solid-state ... -
Synthesis and structural characterization of new transition metal complexes of a highly luminescent amino-terpyridine ligand
Nath Ghosh, Biswa; Puttreddy, Rakesh; Rissanen, Kari (Elsevier Ltd, 2020)The synthesis, NMR and UV-Vis spectroscopy measurements and X-ray diffraction analysis of four new metal complexes of the amino terpyridine ligand 4́-[4-(4-aminophenyl)phenyl]-2,2́:6́,2́́-terpyridine L, namely [FeL2](ClO4)2 ... -
Synthesis of isomorphous cobalt and nickel thiocyanate coordination compounds : effect of metals on compound properties
Hannachi, Anissa; Valkonen, Arto; Gómez García, Carlos J.; Rzaigui, Mohamed; Smirani, Wajda (Elsevier, 2019)The reaction of 2-methylpiperazine with the thiocyanate ligand and two transition metals leads to the production of two new isomorphous [ML2SCN4] where L is the 2-methylpiperazine and [M =Co (1), and Ni (2)], presenting ...
Ellei toisin mainittu, julkisesti saatavilla olevia JYX-metatietoja (poislukien tiivistelmät) saa vapaasti uudelleenkäyttää CC0-lisenssillä.