M. Ghadermazi

University of Kurdistan | UoK · Department of Mathematics

Abstract ‎Let Cc(X) (resp‎. ‎CF(X)) denote the subring of C(X) consisting of functions with countable (resp‎. ‎finite) image and CF(X) be the socle of C(X)‎. ‎We characterize spaces X with C∗(X)=Cc(X)‎, ‎which generalizes a celebrated result due to Rudin‎, ‎Pelczynnski and Semadeni‎. ‎Two zero-dimensional compact spaces X‎, ‎Y are homeomorphic if a...

The new mixed-ligand complex of [Tl(Ph2phen)Cl3(DMSO)] (1) is obtained from the reaction of TlCl3∙4H2O with 4,7-diphenyl-1,10-phenanthroline (Ph2phen) in a methanol solution. Suitable crystals of 1 are obtained for the X-ray diffraction measurement by methanol diffusion into a DMSO solution. This complex is characterized by spectral methods (IR, UV...

The compound (dienH3)2(pydc)3,1; dien: diethyltriamine, pydcH2: pyridine-2,6-dicarboxylic acid, as a proton transfer ligand was applied to synthesize (dienH3)2[Ce(pydc)3]3·16.75H2O, 2. The compounds were examined by elemental analysis, IR, UV and NMR spectroscopy. In addition, the compound 2 was studied by TG analysis, single crystal X-ray diffract...

In this study, the solution chemistry and solid-state structures of a novel proton transfer compound, (pipzH2)(pyc)2·H2O 1, and three metal–organic complexes of [Mn(pyc)2(H2O)2]2·2H2O 2, [Ni(pyc)2(H2O)2]·H2O 3 and [Cu(pyc)2H2O]n 4, (pyc = pyridine-2-carboxylate, pipz = piperazine) were investigated. On the basis of crystallographic data, each MII i...

The new compounds, (phhyH)2(pydc), 1 and (phhyH)[Ni(pydc)(pydcH)].3H2O, 2, phhy: phenylhydrazine, pydcH2: pyridine-2,6-dicarboxylic acid, were synthesized and characterized by IR, 1H NMR, 13C NMR and UV spectroscopy. The structure of 2 was determined by X-ray crystallography. In the crystal structure, the metal ion was six coordinated by two triden...

The three complexes [Zn(pyc)2(H2O)2]·H2O (1), (pipH2)[Cd(pyc)3]·3H2O (2) and [Mg(pyc)2(H2O)2]·H2O (3) (pycH: pyridine-2-carboxylic acid, pip: piperazine) were prepared using a proton transfer compound (pipH2)(pyc)2 and corresponding metallic salts. The characterization was carried out using IR and NMR spectroscopies and single crystal X-ray diffrac...

Let Cc(X) = {f ∈ C(X):f(X)is countable}. Similar to C(X) it is observed that the sum of any collection of semiprime (resp. prime) ideals in the ring Cc(X) is either Cc(X) or a semiprime (resp.prime) ideal in Cc(X). For an ideal I in Cc(X), it is observed that I and √I have the same largest zc-ideal. If X is any topological space, we show that there...

The title compound, (C4H12N2)[Ce2(C4H4O4S)4(H2O)2]·3H2O, features a polymeric anion with a centrosymmetric Ce2O2 core and a Ce⋯Ce distance of 4.3625 (4) Å. The anions form ribbons {[Ce2(C4H4O4S)4(H2O)2]2−}n extending along [100]. The doubly protonated piperazinium cations reside on centers of inversion and link the polymeric ribbons via N—H⋯O hydro...

A new compound of Sb(III), formulated as (pipzH2)[Sb2(pydc)4].2H2O (1), was synthesized and characterized by IR, 1H and 13C NMR spectroscopy, elemental analysis and single crystal X-ray diffractometry. The compound (1) is a member of a great family of supramolecular metallic compounds recently derived from a proton transfer ion pair i.e. (pipzH2)(p...

Novel metal organic frameworks including {(PipzHz)[Mn(py-2,3-dch]-7.75HzO}n, 1, {(PipzHz)[Zn(py-2,3-dc)z]-4HzO}n, 2, [Cd(Py-2,3-dc)(HzO)3]n,3 and {(PipzHz)[H~CllO]}n, 4, in which pipz is piperazine and py-2,3-dcHz is pyridine-2,3-dicarboxylic acid were synthesized applying a proton transfer ion pair i.e. (PipzHz)(Py-2,3-dcH)z and corresponding meta...

The title compound, (CH6N3)[Zn2(C7H3NO5)2(C7H4NO5)(H2O)]·2H2O, has an anionic binuclear complex of ZnII balanced with a guanidinium cation. There are two uncoord­inated water mol­ecules in the structure. The asymmetric unit of the compound has two different coordination types (the coordination of Zn1 is distorted trigonal-bipyramidal, while that of...

The reaction of magnesium(II) chloride tetra-hydrate with the proton-transfer compound piperazinediium pyridine-2-carboxyl-ate, (pipzH2)(pyc)2 (pipz is pirerazine and pycH is pyridine-2-carboxylic acid) in aqueous solution leads to the formation of the title compound, [Mg(C6H4NO2)2(H2O)2]·0. 15H2O. The Mg atom is six-coordinated in a distorted octa...

The reaction of aluminium(III) sulfate with piperazinediium pyridine-2,6-dicarboxyl-ate, (pipzH2)(pydc), where pipz is piperazine and pydcH2 is pyridine-2,6-dicarboxylic acid, in aqueous solution leads to the formation of the title complex, (C4H12N2)1/2[Al(H2O)6](SO4)2·4H2O. The crystal structure of this compound has been published previously [Bata...

The reaction of nickel(II) nitrate hexa-hydrate with the proton-transfer compound (pnH2)2(btc)·2H2O (where pn = propane-1,3-diamine and btcH4 = benzene-1,2,4,5-tetra-carboxylic acid) in aqueous solution resulted in the formation of the title compound, {(C3H12N2)[Ni(C10H2O8)(H2O)2]·0.5H2O} n. Each Ni2+ ion is situated on a crystallographic twofold r...

Article CITATIONS 0 READS 46 5 authors, including: Some of the authors of this publication are also working on these related projects: Synthesis of nano metal oxides View project Ionic Polymer Metal Composite View project Abstract The aim of this paper is to provide a link between research projects and education to optimize teaching and learning of...