Spectroscopic and magnetic properties of Cu(II) complexes with selected biologically important ligands

Świsłocka, Renata; Kalinowska, Monika; Ferenc, W.; Sarzyński, Jan; Lewandowski, W.

doi:10.2478/s11532-012-0026-1

Cited by 12 publications

(13 citation statements)

References 18 publications

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“…They also play an important role in inorganic and bioinorganic chemistry and in some areas of daily life. 1,4,[7][8][9][10][11][12][13] 2-(4-Chlorophenoxy)acetic acid is a white solid sparingly soluble in water. 1 They serve for the production of biomedical materials and as the therapeutic agents being used in anti-cancer therapy.…”

Section: Introductionmentioning

confidence: 99%

Magnetic, thermal and spectroscopic properties of lanthanide(III) 2-(4-chlorophenoxy) acetates, Ln(C8H6ClO3)3•nH2O

Ferenc

Cristóvão

Sarzyński

2013

JSCS

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4-Chlorophenoxyacetates of lanthanides(III) were synthesized as polycrystalline hydrated solids with the general formulae: Ln(C8H6ClO3)3•2H2O (Ln = La(III), Pr(III), Sm(III), Eu(III) and Tb(III)), Ln(C8H6ClO3)3•H2O (Ln = Dy(III)) and Ln(C8H6ClO3)3•3H2O (Ln = Er(III), Tm(III), Yb(III) and Lu(III) and characterized by elemental analysis, FTIR spectroscopy, magnetic and thermogravimetric studies and also by X-ray diffraction (XRD) measurements. The complexes have colours typical for lanthanide(III) ions. The carboxylate groups bind as bidentate chelating. On heating to 1273 K in air the complexes decompose in three steps. At first they dehydrate in one stage to form anhydrous salts that next decompose to the oxides of respective metals with the intermediate formation of their oxychlorides. The gaseous products of compound thermal decomposition in nitrogen were also determined and the magnetic susceptibilities were measured over the ranges 76-303K and 1.8-303K, and their magnetic moments were calculated. The results show that 4-chlorophenoxyacetates of lanthanides(III) are high-spin complexes with weak ligand field

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Section: Introductionmentioning

confidence: 99%

Magnetic, thermal and spectroscopic properties of lanthanide(III) 2-(4-chlorophenoxy) acetates, Ln(C8H6ClO3)3•nH2O

Ferenc

Cristóvão

Sarzyński

2013

JSCS

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“…Many additives were incorporated into perovskite films, which achieved large grain size and stability due to the “cross-link” or chelation effects between the perovskite grains and functional groups. − 4-Aminobenzoic acid (ABA) is a nonvolatile additive with slight solubility (0.59 wt %) in water at 25 °C, which is totally different from that of the commonly used methylammonium (MA) and formamidinium (FA) organic components. The ABA has a high affinity toward binding to divalent metal ions by coordinating with amino and carboxyl groups, , thus having been widely used as a cross-linking agent for polyurethane resins and dyes . In addition, the amino group is expected to incorporate into the surface of lead-halide octahedra layers to anchor the perovskite. ,, Therefore, ABA can be a great additive for controllable crystallization of the CsPbI 2 Br film at low temperature and thus improve the moisture stability.…”

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confidence: 99%

Low-Temperature Stable α-Phase Inorganic Perovskite Compounds via Crystal Cross-Linking

Zhang

Liu

et al. 2018

J. Phys. Chem. Lett.

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Inorganic perovskite compounds hold promise to improve the stability of perovskite solar cells (PSCs). However, the phase instability and high annealing temperature process of these metastable structural polymorphs such as α-phase CsPbI 3−x Br x hinder their further development. Herein, we demonstrated the successful reduction of temperature from 250 to 100 °C during the growth of stable and highcrystallinity α-phase CsPbI 2 Br via crystal cross-linking. 4-Aminobenzoic acid (ABA) was used as a nonvolatile additive with slight solubility in water to bridge the adjacent CsPbI 2 Br to form a grain-interconnected film. The interaction between ABA and perovskite grains leads to the growth of highly crystalline perovskite films. The optimized PSC based on ABA-incorporated CsPbI 2 Br using a TiO 2 /Al 2 O 3 /NiO/ carbon architecture exhibits an efficiency of 8.44%. More importantly, the additive enables significant improvement of phase stability against moisture. The good performance highlights the chemical modification via cross-linking to achieve efficient and stable inorganic perovskite devices.

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“…Key refinement details are shown in Table 1. [26][27], and o-chlorobenzoic acid [28], with those of complexes 1-3 has been presented in Table S1 of ESI.…”

Section: X-ray Crystallographymentioning

confidence: 99%

Syntheses and crystal structures of mixed-ligand copper(II)–imidazole–carboxylate complexes

Batool¹,

Harrison

Syed

et al. 2018

Journal of Coordination Chemistry

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The syntheses, characterization and crystal structures of the reaction products of Cu 2+ ions with imidazole (Himz) and different aromatic carboxylates, viz.: [Cu(Himz)2(cinn)2(H2O)] (1), [Cu(Himz)2(paba)2] (2) and [Cu(Himz)2(clba)2] (3) (cinn-= C9H7O2-, paba-=C7H6NO2-, clba-= C7H4ClO2-) are described and studied by spectroscopic (Uv-Visible, FTIR) measurements. The single-crystal X-ray diffraction analyses indicate that each complex is monomeric: the metal ion in (1) adopts square-pyramidal coordination geometry arising from two imidazole-nitrogen atoms, two cinnamate-O atoms and an apical aqua-O atom. Complexes 2 and 3 however, assume a square planar configuration, which is realized by the coordination of two N atoms of two imidazole moieties and two O atoms: in both complexes the imidazole moieties are trans to each other. TGA results indicate that upon heating, these complexes lose their carboxylate anions first, followed by removal of the imidazole molecules.

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Spectroscopic and magnetic properties of Cu(II) complexes with selected biologically important ligands

Cited by 12 publications

References 18 publications

Magnetic, thermal and spectroscopic properties of lanthanide(III) 2-(4-chlorophenoxy) acetates, Ln(C8H6ClO3)3•nH2O

Magnetic, thermal and spectroscopic properties of lanthanide(III) 2-(4-chlorophenoxy) acetates, Ln(C8H6ClO3)3•nH2O

Low-Temperature Stable α-Phase Inorganic Perovskite Compounds via Crystal Cross-Linking

Syntheses and crystal structures of mixed-ligand copper(II)–imidazole–carboxylate complexes

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