Inorganic and coordination chemistry
Author(s): Maria Cocu, Stefan Manole
Field: Inorganic and coordination chemistry
Type: Short communication
Issue: 2015 Volume 10, no.2
Pages: 95-98
Keywords: coordination compounds, oxovanadium(IV), dyes, thermoplastic polymer.
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Abstract (PDF)
DOI: dx.doi.org/10.19261/cjm.2015.10(2).13
Graphical Abstract: We have investigated the properties as dyes of coordination compounds synthesized by us previously (8-(1',2'-naphthyl)-1-R-3-methyl-6-thiomethyl-4,5,7-triazanona-1,3,5,7-tetraenato-1,1'-diolato(-)-O1, O1', N4, N7-vanadil, where R=CH3 (1) , C6H5 (2)), which can be used for colouring thermoplastic masses. The compounds have a high photostability (7 points), thermostability (>250°) and an intensity of colour that give a low consumption (0.006-0.010g).
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Author(s): Mihail Iacob
Field: Inorganic and coordination chemistry
Type: Research paper
Issue: 2015 Volume 10, no.1
Pages: 46-51
Keywords: hematite, nanoparticles, iron oxides, sonochemistry.
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DOI: dx.doi.org/10.19261/cjm.2015.10(1).06
Graphical Abstract: Hematite nanoparticles were prepared by a procedure consisting in sonication of μ3-oxo trinuclear iron(III) acetate of composition [Fe3O(OOCCH3)6(H2O)3]NO3∙4H2O, {Fe3O}NO3, as iron source, in strong basic conditions followed by thermal treatment at 600˚C. The formation of the hematite was confirmed by IR spectroscopy, X-ray powder diffraction and Raman spectroscopy while the shape and size of the nanoparticles and their agglomeration were evidenced and estimated on the basis of the images taken with TEM technique.
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Author(s): Ana Lazarescu, Elena Melnic, Sergiu Shova, Victor Kravtsov, Constantin Turta
Field: Inorganic and coordination chemistry
Type: Research paper
Issue: 2015 Volume 10, no.1
Pages: 52-56
Keywords: coordination polymers, lanthanum (III), cyanoacetic acid, crystal structure.
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DOI: dx.doi.org/10.19261/cjm.2015.10(1).07
Graphical Abstract: A lanthanum(III) cyanoacetate complex {[La2(CNCH2COO)6 (H2O)4]∙H2O}n (1) was synthesized and characterized by X-ray single-crystal analysis. The complex 1 exhibits one-dimensional coordination polymer structure. Cyanoacetate ligands coordinated in the bidentate bridging and tridentate-chelating bridging modes. The cyano-group of ligand is not coordinated to the lanthanide ion.
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Author(s): Masahiro Mikuriya, Melissa Schumacher, Chinatsu Kawano, Takahiro Akihara, Kenta Ono, Daisuke Yoshioka, Hiroshi Sakiyama, Makoto Handa
Field: Inorganic and coordination chemistry
Type: Research paper
Issue: 2014 Volume 9, no.2
Pages: 62-66
Keywords: nickel complex, dinuclear complex, magnetic property, ferromagnetic interaction
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DOI: dx.doi.org/10.19261/cjm.2014.09(2).09
Graphical Abstract: Dinuclear nickel(II) pivalate with µ-aqua- and di-µ-pivalato-bridges having monodentate pivalato and monodentate pivalic acid molecules, [Ni
2{O
2CC(CH
3)
3}
4(OH
2){HO
2CC(CH
3)
3}
4], was prepared and characterized by elemental analysis and IR and UV-Vis spectroscopies, temperature dependence of magnetic susceptibilities (4.5—300K), and single-crystal X-ray crystallography. The magnetic data analysis showed a ferromagnetic interaction between the two nickel atoms.
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Author(s): Masahiro Mikuriya, Yusuke Tanaka, Daisuke Yoshioka, Makoto Handa
Field: Inorganic and coordination chemistry
Type: Research paper
Issue: 2014 Volume 9, no.1
Pages: 93-99
Keywords: dinuclear ruthenium(II,III) carboxylate; magnetic property; mixed-metal complex; tetracyanido nickelate(II)
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DOI: dx.doi.org/10.19261/cjm.2014.09(1).11
Graphical Abstract: Mixed-metal chain complexes constructed from lantern-type dinuclear ruthenium(II,III) carboxylate unit and tetracyanidonickelate(II), (PPh
4)
n[Ru
2(O
2CCH
3)
4Ni(CN)
4]n•nH
2O
(1) and (PPh
4)n[Ru
2{O
2CC(CH
3)
3}
4]
3n[Ni(CN)
4]
2n•2nH
2O
(2), where very weak antiferromagnetic interaction is operating, were synthesized and characterized by elemental analysis and IR and UV-vis spectroscopies and temperature dependence of magnetic susceptibilities (4.5—300K).
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Author(s): Masahiro Mikuriya, Nobuyuki Nagao, Satoshi Kurahashi, Atsushi Tabuchi, Seiki Tomohara, Motohiro Tsuboi, Daisuke Yoshioka, Hiroshi Sakiyama, Akira Fuyuhiro
Field: Inorganic and coordination chemistry
Type: Research paper
Issue: 2014 Volume 9, no.1
Pages: 100-105
Keywords: manganese complex; tetranuclear complex; magnetic property; mixed-valent complex
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Abstract (PDF)
DOI: dx.doi.org/10.19261/cjm.2014.09(1).12
Graphical Abstract: Mixed-valent tetranuclear MnIIMnIII3 complex with 1,3-dimino-2-hydroxypropane-N,N’-N”-N”’-tetracetic acid, Ca
2[Mn
4{µ-OHO}(dhpta)
2(CH
3COO)
2], where considerable antiferromagnetic interactions are operating, was synthesized and characterized by elemental analysis and IR and UV-vis spectroscopies, temperature dependence of magnetic susceptibilities (4.5—300K), and single-crystal X-ray crystallography.
Downloads: 38
Author(s): Andrei Rija, Eduard Coropceanu
Field: Inorganic and coordination chemistry
Type: Review
Issue: 2013 Volume 8, no.2
Pages: 8-20
Keywords: Co(III) dioximates, fluorine containing anions, ligands orientation, H-bonds, biostimulation properties
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DOI: dx.doi.org/10.19261/cjm.2013.08(2).01
Graphical Abstract: As a result of the comparative study of axial ligand orientation towards the equatorial plane in α - dioximates Co (III) obtained by us and those described in the specialized literature (found in Cambridge Crystallographic Data Centre) showed that the external anions and solvent molecules contribute to the orientation of axial ligands as selenourea and thiourea. For aniline and sulphanilamide ligands, is more convenient the parallel orientation to form π-π interactions between the aromatic rings of ligands and the metallocycle of equatorial plane.
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Author(s): Carolina Vomisescu, Paulina Bourosh, Victor Kravtsov, Diana Dragancea
Field: Inorganic and coordination chemistry
Type: Research paper
Issue: 2013 Volume 8, no.2
Pages: 78-82
Keywords: semicarbazone, binuclear nickel(II) complex, crystal structure
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DOI: dx.doi.org/10.19261/cjm.2013.08(2).09
Graphical Abstract: An ONO tridentate semicarbazone Schiff base and a bidentate dipyridyl ligand give a nickel(II) dimer, where atom centers are bridged by phenolate oxygen donors. Downloads: 50
Author(s): Viorina Gorinchoy, Sergiu Shova, Elena Melnic, Victor Kravtsov, ConstantinTurta
Field: Inorganic and coordination chemistry
Type: Research paper
Issue: 2013 Volume 8, no.2
Pages: 83-89
Keywords: carboxy-cluster, Iron(III), salicylate, IR, Mössbauer, TG data
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DOI: dx.doi.org/10.19261/cjm.2013.08(2).10
Graphical Abstract: A reaction of iron and barium nitrate with ammonium salicylate in the mixture of solvents leads to the formation of the new homotrinuclear complex, [Fe
3O(SalH)
7(H
2O)
2]∙(DMAA)
2(MeOH)(THF)
1,5(H
2O)
2,6. Single-crystal X-ray study shows that the titled complex with the moiety {Fe
3O} belongs to the well-known group of μ3-oxohomotrinuclear carboxylates. The IR and MS studies are in accordance with x-ray data. Thermal behaviour of the complex was studied. Downloads: 62
Author(s): V. Lozan
Field: Inorganic and coordination chemistry
Type: Research paper
Issue: 2013 Volume 8, no.1
Pages: 58-77
Keywords: coordination chemistry, amino-thiophenolate ligands, di- and tetranuclear complexes, ferrocene and naphthalene diimide derivatives, polynuclear complexes.
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DOI: dx.doi.org/10.19261/cjm.2013.08(1).08
Graphical Abstract: A series of novel tri-, tetra- and pentanuclear complexes composed of dinuclear LM units (M=Co, Ni, Zn; L=24-membered macrocyclic hexaaza-dithiophenolate ligand) and ferrocenecarboxylate ([CpFeC
5H
4CO
2]ˉ), 1,1’-ferrocenedicarboxy-late ([Fe(C
5H
4-CO
2)
2]
2ˉ), acetylene-dicarboxylate, terephthalate, isophthalate, and naphthalene diimide dicarboxylate groups is reported. The complexes, have been synthesized and characterised by UV/Vis-, IR-, NMR-spectroscopy, Cyclovoltammetry, and X-ray crystallography. Each dicarboxylate dianion acts as a quadridentate bridging ligand linking two bioctahedral LM
2 units via µ
1,3-bridging carboxylate functions to generate discrete dications with a central LM
2(O
2C-R-CO
2)M
2L core. The magnetic properties of these compounds reveal the presence of weak ferromagnetic exchange interactions between the Ni
II ions of the dinuclear subunits and negligible coupling across the dicarboxylate bridges.
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