Structural characterization of a new copper(II) complex of 1,10-phenanthroline and benzoate [Cu(phen)(C6H5CO 2 − )2]

Batool, Syeda Shahzadi; Ahmad, Saeed; Khan, Imran; Ejaz,; Harrison, William T. A.

doi:10.1134/s0022476615020286

Cited by 20 publications

(6 citation statements)

References 36 publications

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“…A difference (Δν) of about 120 cm −1 in ν asym (CO 2 ) and ν sym (CO 2 ) wavenumbers is indicative of the bidentate coordination of the carboxylate groups to the metal ions Eu(III) and Tb(III). For monodentate coordination of carboxylates, Δν is usually more than 200 cm −1 (Deacon and Philips, 1980; Zhuravlev et al, 2011; Batool et al, 2015). Monodentate coordination removes the equivalence of two oxygen atoms.…”

Section: Resultsmentioning

confidence: 99%

Synthesis, Crystal Structures and Photoluminescent Properties of One-Dimensional Europium(III)- and Terbium(III)-Glutarate Coordination Polymers, and Their Applications for the Sensing of Fe3+ and Nitroaromatics

et al. 2019

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Two lanthanide–glutarate coordination polymers, viz. : {[Eu(C5H6O4)(H2O)4]Cl}n, (1) and [Tb(C5H7O4)(C5H6O4)(H2O)2]n, (2) have been synthesized and characterized by IR spectroscopy, thermogravimetric analysis, and X-ray crystallography. In 1, the Eu(III) ions are coordinated by four O atoms from two bidentate chelating carboxylate groups, one O atom from a bridging carboxylate group and four O atoms from water molecules adopting an EuO9 distorted tri-capped trigonal prismatic coordination geometry. In 2, the Tb(III) ions are coordinated by six O atoms from three bidentate chelating carboxylates, one O atom from a bridging carboxylate and two O atoms from water molecules to generate distorted tri-capped trigonal prismatic TbO9 polyhedron. In both compounds, the metal polyhedra share edges, producing centrosymmetric Ln2O2 diamonds, and are linked into [001] chains by bridging glutarate di-anions. The crystal structures are consolidated by O–H···O and O–H···Cl hydrogen bonds in 1, and O–H···O hydrogen bonds in 2. Compound 1 exhibits a red emission attributed to the 5D0 → 7FJ (J = 1–4) transitions of the Eu(III) ion, whereas 2 displays green emission corresponding to the 5D4 → 7FJ (J = 0–6) transitions of the Tb(III) ion. Both the compounds exhibit high sensitivity and selectivity for Fe3+ ions due to luminescence quenching compared with other metal ions, which include; Na+, Mg2+, Al3+, Cr3+, Mn2+, Fe2+, Co2+, Ni2+, Zn2+ and Cd2+. Compounds 1 and 2 also show high luminescence quenching sensitivity for 4-nitrophenol over the other aromatic and nitroaromatic compounds, namely; bromobenzene, 1,3-dimethylbenzene, nitrobenzene, 4-nitrotolune, 4-nitrophenol, 2,6-dinitrophenol and 2,4,6-trinitrophenol.

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Section: Resultsmentioning

confidence: 99%

Synthesis, Crystal Structures and Photoluminescent Properties of One-Dimensional Europium(III)- and Terbium(III)-Glutarate Coordination Polymers, and Their Applications for the Sensing of Fe3+ and Nitroaromatics

et al. 2019

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“…In compound 1, the coordination of phen to the metal centers was confirmed via the shifting of IR frequencies for δ(C-H) vibrations of phen [73,74]. The bands at around 1420 and 1151 cm −1 for compound 1 could be attributed to the v(C=C) and v(C=N) vibrations of coordinated phen [75].…”

Section: D-h•mentioning

confidence: 90%

Supramolecular Assemblies in Mn(II) and Zn(II) Metal–Organic Compounds Involving Phenanthroline and Benzoate: Experimental and Theoretical Studies

Boro,

Banik,

Gomila

et al. 2024

Inorganics

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Two new Mn(II) and Zn(II) metal–organic compounds of 1,10-phenanthroline and methyl benzoates viz. [Mn(phen)2Cl2]2-ClBzH (1) and [Zn(4-MeBz)2(2-AmPy)2] (2) (where 4-MeBz = 4-methylbenzoate, 2-AmPy = 2-aminopyridine, phen = 1,10-phenanthroline, 2-ClBzH = 2-chlorobenzoic acid) were synthesized and characterized using elemental analysis, TGA, spectroscopic (FTIR, electronic) and single crystal X-ray diffraction techniques. The crystal structure analysis of the compounds revealed the presence of various non-covalent interactions, which provides stability to the crystal structures. The crystal structure analysis of compound 1 revealed the formation of a supramolecular dimer of 2-ClBzH enclathrate within the hexameric host cavity formed by the neighboring monomeric units. Compound 2 is a mononuclear compound of Zn(II) where flexible binding topologies of 4-CH3Bz are observed with the metal center. Moreover, various non-covalent interactions, such as lp(O)-π, lp(Cl)-π, C–H∙∙∙Cl, π-stacking interactions as well as N–H∙∙∙O, C–H∙∙∙O and C–H∙∙∙π hydrogen bonding interactions, are found to be involved in plateauing the molecular self-association of the compounds. The remarkable enclathration of the H-bonded 2-ClBzH dimer into a supramolecular cavity formed by two [Mn(phen)2Cl2] complexes were further studied theoretically using density functional theory (DFT) calculations, the non-covalent interaction (NCI) plot index and quantum theory of atoms in molecules (QTAIM) computational tools. Synergistic effects were also analyzed using molecular electrostatic potential (MEP) surface analysis.

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“…As a continuation of our research work on ternary Cu(II) complexes with N,N-chelating donor ligands and carboxylates [14][15][16], we report herein three ternary complexes of copper(II) ion, coordinated by imidazole and aromatic mono-carboxylates.…”

Section: Introductionmentioning

confidence: 92%

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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Structural characterization of a new copper(II) complex of 1,10-phenanthroline and benzoate [Cu(phen)(C6H5CO 2 − )2]

Cited by 20 publications

References 36 publications

Synthesis, Crystal Structures and Photoluminescent Properties of One-Dimensional Europium(III)- and Terbium(III)-Glutarate Coordination Polymers, and Their Applications for the Sensing of Fe3+ and Nitroaromatics

Synthesis, Crystal Structures and Photoluminescent Properties of One-Dimensional Europium(III)- and Terbium(III)-Glutarate Coordination Polymers, and Their Applications for the Sensing of Fe3+ and Nitroaromatics

Supramolecular Assemblies in Mn(II) and Zn(II) Metal–Organic Compounds Involving Phenanthroline and Benzoate: Experimental and Theoretical Studies

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

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