Inorganic and coordination chemistry

SYNTHESIS AND STRUCTURAL CHARACTERIZATION OF THE TETRANUCLEAR IRON(III) CLUSTER WITH SALICYLIC ACID

Author(s):

Viorina Gorinchoy

Field: Inorganic and coordination chemistry
Type: Research paper
Issue: 2020 Volume 15, no.2
Pages: 62-68

Keywords: homotetranuclear salicylate, iron(III), cluster, IR spectroscopy, X-ray crystal structure.
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DOI: https://doi.org/10.19261/cjm.2020.758

Abstract (PDF)
Graphical Abstract: A new tetra-homonuclear iron(III) cluster, [Fe₄O₂(Sal)₄(H₂O)₆]·4DMA·0.75H₂O, where Sal= salicylic acid and DMA= N,N-dimethylacetamide consolidated via two µ₃-oxo- and four salicylate-bridges was synthesized and characterized by IR spectroscopic method as well as by single crystal X-ray diffraction analysis. The structure of the obtained tetranuclear compound consists of four FeIII atoms in a “butterfly” arrangement. The coordination sphere of each of the two central FeIII atoms is generated by two μ₃-oxo-bridging atoms and four oxygen atoms provided by the tridentate-bridging Sal^2- ligands, while the coordination polyhedron of another two iron atoms involve six oxygen atoms from three water molecules, two salicylic and one μ3-oxigen atom. The Fe-O distances within Fe-O-Fe bridge are of 2.102(3) Å (for wing-body) and 2.038(3) Å (for body-body).

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RE-REFINEMENT OF CRYSTAL STRUCTURE OF BIS(LIDOCAINE) DIAQUATETRATHIOCYANATONICKELATE(II)

Author(s):

Koba Amirkhanashvili, Alexandre Sobolev, Nani Zhorzholiani, Vladimer Tsitsishvili

Field: Inorganic and coordination chemistry
Type: Research paper
Issue: 2020 Volume 15, no.1
Pages: 67-74

Keywords: lidocaine complex, nickel(II), crystal structure, hydrogen bond.
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DOI: https://doi.org/10.19261/cjm.2019.675

Abstract (PDF)
Graphical Abstract: This paper reports on the synthesis and structure re-refinement of bis(lidocaine) diaquatetrathiocyanatonickelate(II). The compound with the formula (LidH)₂[Ni(NCS)₄(H2O)₂], where Lid is (2-(diethylamino)-N-(2,6-dimethylphenyl)acetamide, crystallizes in the monoclinic space group P2₁/c with a= 18.3509(5), b= 7.6532(2), c= 14.9585(4) Å, β= 109.964 (2)°, V= 1974.57 (9) Å³, and Z= 2. Coordination of the Ni²⁺ ion with thiocyanate ions and water molecules generates slightly distorted octahedral anion [Ni(NCS)₄(H2O)₂]^2– with N-bonded thiocyanate groups, while two protonated cations LidH⁺ remain in an outer coordination field.

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SYNTHESIS AND CRYSTAL STRUCTURE OF BIS(CITRATO)GERMANATE AND STANNATE WITH TRIS(PHENANTHROLINE)NICKEL(II) CATION

Author(s):

Elena Martsinko, Inna Seifullina, Elena Chebanenko, Olha Pirozhok, Viktoriya Dyakonenko, Svitlana Shishkina

Field: Inorganic and coordination chemistry
Type: Research paper
Issue: 2018 Volume 13, no.2
Pages: 56-62

Keywords: citric acid, 1,10-phenanthroline, germanium(IV), tin(IV), nickel(II) complex.
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DOI: http://dx.doi.org/10.19261/cjm.2018.513

Abstract (PDF)

Graphical Abstract: The new complexes [Ni(phen)₃][Ge(HCit)₂]•2H₂O (1), [Ni(phen)₃][Sn(HCit)₂]•3H₂O (2) (where phen is 1,10-phenanthroline, H₄Cit is citric acid) were obtained. The identity, composition, and thermal stability of the complexes were established by elemental analysis, thermogravimetry, and IR spectroscopy. According to the X-ray diffraction data, the bis(citrate)germanate / bis(citrate)stannate [Ge/Sn(HCit)₂]^2- carries out the role of the dianion while two halves of the nickel complexes with phenanthroline [Ni(Phen)₃]²⁺ are cations.

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SYNTHESIS AND X-RAY CHARACTERISATION OF A NEW MIXED-VALENCE TRINUCLEAR IRON CLUSTER

Author(s):

Olesea Cuzan-Munteanu, Silvia Melnic, Sergiu Shova

Field: Inorganic and coordination chemistry
Type: Research paper
Issue: 2018 Volume 13, no.2
Pages: 48-55

Keywords: iron cluster, mixed valence, X-ray analysis, µ3-oxo, crystal structure, hydrogen bond.
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DOI: http://dx.doi.org/10.19261/cjm.2018.504

Abstract (PDF)

Graphical Abstract: This paper reports on the synthesis of a new trinuclear homometalic mixed-valent iron carboxylate cluster with furan-2-carboxylic acid. The complex with the formula [Fe₂^IIIFe^IIO(C₄H₃OCOO)₆(H₂O)₃]∙0.5CH₃CN•2.25H2O was characterized by X-ray analysis that revealed that the compound crystalizes in the triclinic centrosymmetric group P-1, with the following unit cell parameters: a = 10.2758(6)Å, b = 11.5991(9) Å, c = 19.7349(15) Å, α = 105.060(7)°, β = 94.216(6)°, γ = 101.662(6)°.

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NMR STUDIES OF SOME Zn AND Cd COORDINATION COMPOUNDS BEARING 1,2-CICLOHEXANEDIONEDIOXIME

Author(s):

Elena Gorincioi, Eduard Coropceanu

Field: Inorganic and coordination chemistry
Type: Research paper
Issue: 2018 Volume 13, no.2
Pages: 38-47

Keywords: NMR, zinc, cadmium, oxime, homodinuclear complex, coordination polymer.
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DOI: http://dx.doi.org/10.19261/cjm.2018.368

Abstract (PDF)

Graphical Abstract: A series of homobi- and polynuclear zinc and cadmium coordination compounds supported by 1,2-cyclohexanedionedioxime and bridging bidentate ligands: 4,4'-bipyridyl, 1,2-bis(4-pyridyl) ethane, 1,3-bis(4-pyridyl) propane and dipiridil sulfide were characterized by the experimental techniques of ¹H and ¹³C NMR spectroscopy. Individual NMR data of compounds are consistent with their assignment as complexes.

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LUMINESCENT THIN FILMS BASED ON N-(DIPHENYLPHOSPHORYL)BENZAMIDE EuIII AND TbIII COMPLEXES FOR LIGHT EMITTING DIODE TECHNOLOGY

Author(s):

Nataliia Kariaka, Olena Litsis, Yuriy Kolomzarov, Paula Gawryszewska, Sergii Smola, Nataliia Rusakova, Victor Trush, Tatiana Sliva, Vladimir Amirkhanov

Field: Inorganic and coordination chemistry
Type: Research paper
Issue: 2018 Volume 13, no.1
Pages: 54-62

Keywords: lanthanide complex, photoluminescence, carbacylamidophosphate, chelate ligand, thin film.
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DOI: http://dx.doi.org/10.19261/cjm.2018.473

Abstract (PDF)
Graphical Abstract: The lanthanides coordination compounds LnL₃, LnL₃Phen and LnL₃Dipy with bulky aryl-functionalised carbacylamidophosphate (CAPh) ligand N-(diphenylphosphoryl)benzamide (HL=PhC(O)N(H)P(O)Ph₂) were synthesized for luminescent thin films producing. The films were obtained by vacuum evaporation and spin coating methods and exhibited intensive monochromatic photoemission with decay times equal to 0.78 1.34 ms.

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HETEROTRINUCLEAR [Fe2IIINiII]-µ3-OXO-CLUSTER BASED ON SALICYLIC ACID. SYNTHESIS, STRUCTURE AND PHYSICO-CHEMICAL PROPERTIES

Author(s):

Viorina Gorinchoy, Vera Zubareva, Elena Melnic, Victor Kravtsov

Field: Inorganic and coordination chemistry
Type: Research paper
Issue: 2018 Volume 13, no.1
Pages: 46-53

Keywords: heterotrinuclear μ3-oxo complex, X-ray, IR analysis, Mössbauer spectrum, TG data.
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DOI: http://dx.doi.org/10.19261/cjm.2018.483

Abstract (PDF)
Graphical Abstract: The reaction between iron and nickel salts with ammonium salicylate results in the formation of a new trinuclear heterometallic complex

[hexa-µ₂-salicylato-µ₃-oxo-(methanol)(dimethylformamide) aquadiiron(III) nickel(II)] methanol dimethylformamide. The synthesized [Fe₂NiO(SalH)₆(CH₃OH)(DMF)(H₂O)]•DMF•CH₃OH complex crystallizes in the monoclinic space group C2/c. The IR and Mössbauer spectra and thermal properties were studied.

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OXIDO- AND DIOXIDOVANADIUM(V) COMPLEXES WITH O-VANILLIN SEMICARBAZONE: SYNTHESIS AND CRYSTAL STRUCTURE

Author(s):

Lidia Cuba, Paulina Bourosh, Victor Kravtsov, Elena Gorincioi, Diana Dragancea

Field: Inorganic and coordination chemistry
Type: Research paper
Issue: 2018 Volume 13, no.1
Pages: 36-45

Keywords: oxidovanadium(V), dioxidovanadium(V), o-vanillin semicarbazone, NMR spectroscopy, X-ray diffraction study.
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DOI: http://dx.doi.org/10.19261/cjm.2018.477

Abstract (PDF)

Supplementary Material (PDF)

Graphical Abstract: Two vanadium(V) complexes comprising VO³⁺ and VO²⁺ cores with o-vanillin semicarbazone (H2L) have been synthesized and characterized by IR, NMR spectroscopies and single-crystal X-ray diffraction study. The coordination polyhedra are a O5N distorted octahedron in the mono-oxidovanadium complex [VO(HL)(EtO)(EtOH)_0.6(H₂O)_0.4][VO(HL)(SO₄)(EtO)]•0.4EtOH (1) and a O4N square-pyramid in the dioxidovanadium compound [VO₂(HL)]•2H₂O (2).

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A NOVEL 2D ZINC(II) COORDINATION POLYMER BASED ON 2,2'-BIPYRIDINE-4,4'-DICARBOXYLIC ACID: SYNTHESIS, CRYSTAL STRUCTURE AND PHOTOLUMINESCENCE PROPERTY

Author(s):

Aliona Vitiu, Lilia Croitor, Anatolii Siminel, Eduard Coropceanu, Paulina Bourosh

Field: Inorganic and coordination chemistry
Type: Research paper
Issue: 2018 Volume 13, no.1
Pages: 30-35

Keywords: zinc, 2,2′-bipyridine-4,4′-dicarboxylic acid, X-ray, luminescence.
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DOI: http://dx.doi.org/10.19261/cjm.2017.479

Abstract (PDF)

Graphical Abstract: A new two dimensional 2,2′-bipyridine-4,4′-dicarboxylate Zn(II) coordination polymer was obtained by hydrothermal synthesis and characterized by IR spectrum and single-crystal X-ray diffraction. The crystal lattice hosts the N,N-dimethylformamide and water solvent molecules. The new material reveals blue-orange luminescence upon excitation with ultraviolet light.

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CRYSTAL STRUCTURE AND CHARACTERIZATION OF NEUTRAL COBALT(III) 2,3-PYRIDINEDICARBOXYLATE COMPLEX

Author(s):

Natalia Terenti, Marilena Ferbinteanu, Ana Lazarescu

Field: Inorganic and coordination chemistry
Type: Research paper
Issue: 2018 Volume 13, no.1
Pages: 24-29

Keywords: Co(III) complex, 2,3-pyridinedicarboxylic acid, thermal analysis, X-ray diffraction.
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DOI: http://dx.doi.org/10.19261/cjm.2017.371

Abstract (PDF)
Supplementary Material (PDF)

Graphical Abstract: A new Co(III) complex [Co^III(2,3-pdcH)3(H₂O)₃] (2,3-pdcH – monoanion of 2,3-pyridinedicarboxylic acid) has been synthesized from Co(II) salt at room temperature by using nonhydrothermal method and (NH₄)₂S₂O₈ as oxidant. The influence of the type of Co(II) salt used to the synthesis of the final product was investigated. The complex was characterized by elemental analyses, IR and UV-VIS spectroscopy, single crystal X-Ray diffraction and thermogravimetric analyses. The complex crystallizes in the monoclinic space group P2₁/c. The crystal structure reveals a homoleptic complex with a distorted octahedral geometry, where the ligand acts as monodeprotonated N, O-chelating anion.

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