The thermal behaviour of ternary Co(II), Ni(II) and Cu(II) complexes with phthalate ion and 1,10-phenanthroline or 2,2'-dipyridylamine

Poleti, Dejan; Stojaković, Djordje

doi:10.1016/0040-6031(92)85264-v

Cited by 13 publications

(3 citation statements)

References 13 publications

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“…Regarding the type of diamine ligand, the thermal stability increases in the order: phen < bipy < dipya. Similar or even identical trends of thermal stability, where dipya complexes were found to be significantly stable than complexes with other diamines, has been found for pht containing complexes with Cu(II) or Co(II) [51]. 4 ] 2+ entities and counter ipht 2À anions.…”

Section: Thermal Propertiessupporting

confidence: 68%

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Synthesis, magnetic, thermal and structural properties of Co(II), Ni(II) and Cu(II) complexes containing isophthalato ligands

Rogan

Poleti

Karanović

et al. 2011

Journal of Molecular Structure

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Section: Thermal Propertiessupporting

confidence: 68%

“…2). Similar behaviour was already noticed during the dehydration of some binary and ternary complexes containing tpht or pht [49][50][51][52] and still has no proper explanation. In all cases it was not possible to distinguish between coordinated and non-coordinated H 2 O molecules.…”

Section: Thermal Propertiessupporting

confidence: 62%

Synthesis, magnetic, thermal and structural properties of Co(II), Ni(II) and Cu(II) complexes containing isophthalato ligands

Rogan

Poleti

Karanović

et al. 2011

Journal of Molecular Structure

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“…Result of TGA tests for nonpyrolyzed Co x O y -N@C catalysts are shown in Figure 3 a). The Figure reveals the following information: [17] 1) Below 100 8C, the loss of weight is mainly due to the loss of crystal water. 2) From 100 8C to 200 8C, acetate begins to change.…”

Section: Catalyst Activitymentioning

confidence: 98%

Aerobic Oxidation of Hydroxymethylfurfural and Furfural by Using Heterogeneous Co_xO_y–N@C Catalysts

et al. 2014

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2,5-Furandicarboxylic acid (FDCA) is considered to be a promising replacement for terephthalic acid since they share similar structures and properties. In contrast to FDCA, 2,5-furandicarboxylic acid methyl (FDCAM) has properties that allow it to be easily purified. In this work, we reported an oxidative esterification of 5-hydroxymethylfurfural (HMF) and furfural to prepare corresponding esters over Cox Oy -N@C catalysts using O2 as benign oxidant. High yield and selectivity of FDCAM and methyl 2-furoate were obtained under optimized conditions. Factors which influenced the product distribution were examined thoroughly. The Cox Oy -N@C catalysts were recycled five times and no significant loss of activity was detected. Characterization of the catalysts could explain such phenomena. Using XPS and TGA, we made a thorough investigation of the effects of ligand and pyrolysis temperature on catalyst activity.

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From Mono‐ and Dinuclear to Polynuclear Cobalt(II) and Cobalt(III) Coordination Compounds Based on o‐Phthalic Acid and 2,2'‐Bipyridine: Synthesis, Crystal Structures, and Properties

et al. 2005

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The reaction of o‐phthalic acid (H2Pht) and 2,2'‐bipyridine (bpy) with cobalt(II) carbonate at different temperatures results in the isolation of three types of new cobalt(II) and cobalt(III) compounds. The mononuclear cobalt(III) complex [Co(CO3)(bpy)2]2(Pht)·16H2O (1) is obtained when the reaction is run at 60 °C. Crystallographic analysis revealed that 1 contains two crystallographically independent [Co(CO3)(bpy)2]+ cations, a Pht2– anion, and sixteen solvate water molecules. The latter form a wall of channels with the oxygen atoms of the carboxylate groups of the Pht2– anions, which are occupied by pairs of cations. Increasing the temperature of the reaction to 80 °C leads to the formation of the open dinuclear cobalt(II) complex [(bpy)2Co(Pht)H(Pht)Co(bpy)2](HPht)(H2Pht)·2H2O (2), which crystallizes in two polymorphic modifications 2a and 2b. Compound 2a consists of a centrosymmetric dinuclear [(bpy)2Co(Pht)H(Pht)Co(bpy)2]+ cation, an HPht– anion, an H2Pht molecule, and two solvate H2O molecules. In 2b, a small alteration in the crystal structure leads to an increase of the unit‐cell volume. The asymmetric unit of 2b contains six crystallographically independent CoII complexes, which combine into four [(bpy)2Co(Pht)H(Pht)Co(bpy)2]+ units. The main structural unit of the cyclic dinuclear complex [Co(Pht)(bpy)(H2O)]2·2H2O (4) is neutral and cenrosymmetric, with the two CoII atoms linked by two phthalate ligands to form a 14‐membered cycle. A further temperature increase results in the isolation of both the mononuclear complex [Co(Pht)(bpy)(H2O)3]·3H2O (3) and the polynuclear helical coordination polymer [Co(Pht)(bpy)(H2O)]n (5). Extended hydrogen bonding networks as well as aromatic π–π stacking interactions stabilize multidimensional supramolecular architectures in all compounds. Magnetic susceptibility measurements have been performed for complexes 1, 2, 3, and 5. Simulations gave the following parameter sets: for complex 2 |D| = 70 cm–1, g = 2.55 and J =–0.1 cm–1; for complex 3 |D| = 80 cm–1, g = 2.6, and for complex 5 |D| = 65 cm–1, g = 2.45. Complex 1 is diamagnetic. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)

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The thermal behaviour of ternary Co(II), Ni(II) and Cu(II) complexes with phthalate ion and 1,10-phenanthroline or 2,2'-dipyridylamine

Cited by 13 publications

References 13 publications

Synthesis, magnetic, thermal and structural properties of Co(II), Ni(II) and Cu(II) complexes containing isophthalato ligands

Synthesis, magnetic, thermal and structural properties of Co(II), Ni(II) and Cu(II) complexes containing isophthalato ligands

Aerobic Oxidation of Hydroxymethylfurfural and Furfural by Using Heterogeneous Co_xO_y–N@C Catalysts

From Mono‐ and Dinuclear to Polynuclear Cobalt(II) and Cobalt(III) Coordination Compounds Based on o‐Phthalic Acid and 2,2'‐Bipyridine: Synthesis, Crystal Structures, and Properties

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The thermal behaviour of ternary Co(II), Ni(II) and Cu(II) complexes with phthalate ion and 1,10-phenanthroline or 2,2'-dipyridylamine

Cited by 13 publications

References 13 publications

Synthesis, magnetic, thermal and structural properties of Co(II), Ni(II) and Cu(II) complexes containing isophthalato ligands

Synthesis, magnetic, thermal and structural properties of Co(II), Ni(II) and Cu(II) complexes containing isophthalato ligands

Aerobic Oxidation of Hydroxymethylfurfural and Furfural by Using Heterogeneous CoxOy–N@C Catalysts

From Mono‐ and Dinuclear to Polynuclear Cobalt(II) and Cobalt(III) Coordination Compounds Based on o‐Phthalic Acid and 2,2'‐Bipyridine: Synthesis, Crystal Structures, and Properties

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Aerobic Oxidation of Hydroxymethylfurfural and Furfural by Using Heterogeneous Co_xO_y–N@C Catalysts