Inorganic and coordination chemistry

SYNTHESIS AND CHARACTERISATION OF NEW {Fe2CrO} HETEROTRINUCLEAR IRON-CHROMIUM CLUSTERS

Author(s):

Viorina Gorinchoy, Olesea Cuzan, Silvia Melnic, Oleg Petuhov, Sergiu Shova

Field: Inorganic and coordination chemistry
Type: Research paper
Issue: 2021 Volume 16, no.2
Pages: 66-75

Keywords: heteronuclear μ3-oxo complex, Fe2Cr cluster, X-ray diffraction, thermal analysis.
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DOI: https://doi.org/10.19261/cjm.2021.885

Abstract (PDF)
Graphical Abstract: Two new μ3-oxo trinuclear heterometallic Fe2IIICrIII complexes with furan-2-carboxylic and salicylic acids with the composition: [Fe₂CrO(C₄H₃OCOO)₆(CH₃OH)₃]NO₃·0.5CH₃OH and [Fe₂CrO(C₆H₄(OH)COO)₇(CH₃OH₎₂]·2DMA were synthesized starting from iron(III) and chromium(III) salts mixture. The complexes structures were confirmed by elemental analysis, IR, Mössbauer spectroscopies, and X-ray analysis. The atomic absorption spectroscopy confirmed that the iron: chromium ratio is 2:1. The thermal properties of both heteronuclear complexes have been investigated in oxidizing and inert atmospheres revealing the stability of the trinuclear core up to 170 and 220°C, respectively.

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SYNTHESIS AND CRYSTAL STRUCTURE OF NEW Zn(II) COMPLEX WITH N-[BIS(BENZYLAMINO)PHOSPHORYL]-2,2,2-TRICHLOROACETAMIDE

Author(s):

Valeriia Zozulia, Vladimir Ovchynnikov, Tetiana Slyva, Julia Rusanova, Volodymyr Amirkhanov

Field: Inorganic and coordination chemistry
Type: Research paper
Issue: 2021 Volume 16, no.2
Pages: 58-65

Keywords: carbacylamidophosphate, synthesis, zinc, complex, crystal structure.
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DOI: https://doi.org/10.19261/cjm.2021.881

Abstract (PDF)

Supplementary Material (PDF)

Graphical Abstract: The novel binuclear Zn(II) complex of general formula Zn₂(L)₄(CH₃OH)₂ where HL is N-[bis(benzylamino)phosphoryl]-2,2,2-trichloroacetamide has been synthesized from non-aqueous solution and characterized by elemental analysis, FTIR and NMR spectroscopy as well by X-ray single crystal diffraction. This complex represents the third example of binuclear complexes with this ligand within four known for today.

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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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