Chemistry Journal of Moldova

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.



 

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.


 

DOI: http://dx.doi.org/10.19261/cjm.2017.466

 

Abstract (PDF)
Graphical Abstract: New mononuclear six-coordinate lanthanide coordination compounds [Ln (HL)₃Cl₃] (HL = (2,2,2-trichloro-N-(dipiperidin-1-yl-phosphoryl)acetamideCCl3C(O)N(H)P(O)[N(CH₂)₅]₂, carbacylamidophosphate (CAPh) type ligand) have been synthesized from non-aqueous solutions. The complexes have been characterized by elemental analysis, spectroscopic methods (FTIR, ¹H- and ³¹P-NMR, UV-Vis). The structure of [Sm(HL)₃Cl₃] has been further confirmed by single crystal X-ray diffraction analysis.

 

 

DOI: http://dx.doi.org/10.19261/cjm.2017.392   

 

Abstract (PDF)
Graphical Abstract: A new synthetic extractive protocol for the synthesis of Cu(II) and Co(III) complexes of bis(2,2/-methylylidenephenol)diaminoethane (H₂BMPDE) in a single simple step was performed. The obtained data indicated the formation of complexes with 1:1 molar ratio of metal:ligand, of distorted square planar and distorted octahedral geometries. In vitro antibacterial screening revealed that the complexes were active against clinically important gram-negative bacteria (Escherichia coli, pseudomonas, and gram-positive bacterium (Staphylococcus aureus). The synthesis of the complexes was optimized to make it more suitable and efficient for industrial scale production.


 

 

DOI: http://dx.doi.org/10.19261/cjm.2017.446   

 

Abstract (PDF)
Graphical Abstract: Mixed-valent trinuclear manganese complex with N,N’-bis(2-hydroxy-3,5-dimethylbenzyl-N,N’-dimethyl-1,2-ethanediamine (H2hdde), [Mn₃(hdde)₂(CH₃CO₂)₂(CH₃O)₂], was synthesized.  The X-ray crystal structure analysis revealed a linearly arrangement of Mn^III-Mn^II-Mn^IIIcore, where a ferromagnetic coupling (J = 2.62 cm^–1) between the Mn^III and Mn^II ions.


 

DOI: dx.doi.org/10.19261/cjm.2016.11(2).11

 

Graphical Abstract: The crystalline compounds (Hbipy)2[Ge(HCitr)2]•2H2O (1)  and [CuCl(bipy)2]2[Ge(HCitr)2]•8H2O (2) (where H4Citr is citric acid, bipy is 2,2ʹ-bipyridine) were obtained for the first time and their structures were determined by the single-crystal X-ray diffraction method. The two compounds were characterized by IR spectroscopy, thermogravimetric (TGA) and elemental analyses. In both compounds complex bic(citrato)germanate anion is formed, protonated 2,2'-bipyridine molecule and [Cu(bipy)2Cl]+ complex are cations in 1 and 2, respectively.

DOI: dx.doi.org/10.19261/cjm.2016.11(1).04

Graphical Abstract: Several types of crystals having different color appeared in the synthesis of assembled complex of mixed crystals with three metals. [H2(bpp)][M(NCS)4] changed to 1D chain polymer (M(NCS)2(bpp)) by releasing HNCS from the cation and anion in a reaction vessel.

 

The article is Open Access by CC-BY 4.0 License

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H. Dote, H. Yasuhara, S. Nakashima. The Formation Mechanism of Assembled Complexes Bridged by 1,3–Bis(4–Pyridyl)propane. Chemistry Journal of Moldova, 2016, 11(1), pp. 33-38. DOI: dx.doi.org/10.19261/cjm.2016.11(1).04

Article Source: The Formation Mechanism of Assembled Complexes Bridged by 1,3–Bis(4–Pyridyl)propane. 

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DOI: dx.doi.org/10.19261/cjm.2016.11(1).05

Graphical Abstract: Four coordination compounds of iron(III) with ligands based on hydrazine and sulfadiazine: FeCl3·digsemi·2H2O (I) (digsemi-semicarbazide diacetic acid dihydrazide, [Fe(HL)SO4] (II) (НL - sulfadiazine), [Fe(H2L1)(H2O)2](NO3)3·5H2O (III) (H2L1-2,6-diacetylpyridine bis(nicotinoylhydrazone) and [Fe(H2L2)(H2O)2](NO3)3•1.5H2O (IV) (H2L2 - 2,6-diacetylpyridine bis(isonicotinoylhydrazone) were synthesized. The spectroscopic and structural characterisation as well as their biological, properties are presented.

 

The article is Open Access by CC-BY 4.0 License

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I. Bulhac, A. Deseatnic-Ciloci, P. Bourosh, J. Tiurina, O. Bologa, C. Bivol, S. Clapco, A. Verejan, S. Labliuc, O. Danilescu. Structure and Some Biological Properties of Fe(III) Complexes with Nitrogen-Containing Ligands. Chemistry Journal of Moldova, 2016, 11(1), pp. 39-49. DOI: dx.doi.org/10.19261/cjm.2016.11(1).05

Article Source: Structure and Some Biological Properties of Fe(III) Complexes with Nitrogen-Containing Ligands. 

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