Chemistry Journal of Moldova

Accepted papers

Viorina Gorinchoy, Vera Zubareva, Elena Melnic, Victor Kravtsov

Field: Inorganic and coordination chemistry
Type: Research paper
8
heterotrinuclear μ3-oxo complex, X-ray, IR analysis, Mössbauer spectrum, TG data.
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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.

 
 

Downloads: 7

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
9
lanthanide complex, photoluminescence, carbacylamidophosphate, chelate ligand, thin film.
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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.



 

Downloads: 5

Alexandru Ciocarlan, Ion Dragalin, Aculina Aricu, Nina Ciocarlan, Cristina Stavarache, Mariana Deleanu

Field: Natural product chemistry and synthesis
Type: Research paper
6
Silybum marianum fatty oil, GC analysis, fatty acids methyl ester, RP-HPLC analysis, α-tocopherol.
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Graphical Abstract: The present paper describes biochemical (fatty oil) composition of Silybummarianum (L.) Gaertn. of Moldovan origin. The oil content of the seeds was approximately 25%. Linoleic acid (C18:2), an essential polyunsaturated fatty acid, is the most abundant (48.88%), followed by monounsaturated oleic acid (C18:1, 31.94%) and saturated palmitic acid (C16:0, 7.61%). The RP-HPLC analysis of tocopherols composition, showed as main components α-tocopherol (23.45 mg/100g) and γ–tocopherol (5.60 mg/100g). Based on the obtained results, it was shown that the extracted oil from milk thistle seeds is rich in essential fatty acids (about 50%) and tocopherols (29.09 mg/100g) and it can be used in food preparation. 


 

Downloads: 11

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

Field: Inorganic and coordination chemistry
Type: Research paper
oxidovanadium(V), dioxidovanadium(V), o-vanillin semicarbazone, NMR spectroscopy, X-ray diffraction study.
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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). 


 

Downloads: 22

Lilia Anghel, Raul Victor Erhan

Field: Analytical chemistry
Type: Short communication
human lactoferrin, human serum transferrin, FTIR spectroscopy, amino acid, secondary structure.
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Graphical Abstract: In this work, Fourier transform infrared spectroscopy was used to highlight the structural differences between the human lactoferrin and human serum transferrin. The results clearly show the structural differences of human lactoferrin and human serum transferrin. The second derivative analysis of the FTIR spectra allows the direct identification of secondary structure components of the human lactoferrin and human serum transferrin.



 

Downloads: 14

Iurie Ungureanu, Gheorghe Duca, Ionel Humelnicu, 
Gelu Bourceanu

Field: Physical chemistry and chemical physics
Type: Research paper
8
Dushman reaction, cerium ion, manganese ion, iodine specie.
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Graphical Abstract: This contribution presents investigations into possible effects of Ce3+ and Mn2+ on the reduction of UV-spectral signal for I3- observed e.g. in the Dushman reaction. The potential of the metal ions to form complexes with iodine-containing species was analysed. It was shown that no complex ions are formed between Ce3+ and Mn2+ metals ions with IO3-, I-, I2 species. Only the formation of a very weak CeI32+ complex ion was found to occur. An effect of a complex formation on the studied systems could be excluded.

 
 

Downloads: 101

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

Field: Inorganic and coordination chemistry
Type: Research paper
6
zinc, 2,2′-bipyridine-4,4′-dicarboxylic acid, X-ray, luminescence.
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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.



 

Downloads: 20

Farzaneh Mohamadpour, Malek Taher Maghsoodlou, Mojtaba Lashkari, Reza Heydari, Nourallah Hazeri

Field: Organic chemistry
Type: Research paper
13
tartaric acid, polysubstituted quinolines, 12-aryl-tetrahydrobenzo[α]xanthene-11-ones, 1,8-dioxo-octahydroxanthenes, 14-aryl-14H-dibenzo[α,j]xanthenes.
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Graphical Abstract: This method reported the use of tartaric acid as a green and highly efficient catalyst for the convenient synthesis of polysubstituted quinolines and xanthenes derivatives in excellent yields under solvent-free conditions. The main advantages of this one-pot procedure are the green and economic availability of the catalyst, simple experimental and work-up procedures.


 

Downloads: 10

Margarita Skіba, Alexander Pivovarov, Anna Makarova, Victoria Vorobyova

Field: Ecological chemistry
Type: Research paper
8
nanoparticle, silver, stabilization, plasma, antibacterial.
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Graphical Abstract: The contact non-equilibrium low-temperature plasma technique is used to synthesize silver nanoparticles (AgNPs) employing trisodium citrate as capping agent. The AgNPs were characterized using UV-Vis spectroscopy, scanning electron microscopy, X-ray diffraction and zeta potential analysis. Additionally, the antibacterial properties of the synthesized AgNPs were assessed. 


 

Downloads: 22

Larisa Postolachi, Vasile Rusu, Tudor Lupascu, Oleg Petuhov

Field: Ecological chemistry
Type: Short communication
diatomite, alkaline treatment, filtration rate.
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Graphical Abstract: The aim of the study was to modify the diatomite from Ghidirim village (Ribnita distinct, Republic of Moldova) with purpose to use it as filter material. The initial diatomite was modified by alkaline treatment with sodium carbonate, and the filtering capacity was evaluated by suction filtration method. The treatment of diatomite by sodium carbonate resulted in an increased filtration rate, recording the most pronounced filtering capacity for diatomite treated with 20% solution of sodium carbonate.


 

Downloads: 21