Chemistry Journal of Moldova

2013 Volume 8, no.2

THE STUDY OF ORIENTATION OF AXIAL AMINO-LIGANDS IN SOME Co(III) DIOXIMATES

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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MOLECULAR CONCEPTS OF MACROPHAGE TARGETING

Author(s):

Veaceslav Boldescu, Valeriu Crudu, Natalia Sucman, Serghei Pogrebnoi, Marina Zviaghinţeva, Eugenia Stîngaci, Vsevolod Pogrebnoi, Fliur Macaev


Field: Organic chemistry
Type: Review
Issue: 2013 Volume 8, no.2
Pages: 21-31
Keywords: macrophage receptor targeting, macrophage enzyme targeting, inflammatory disorders, tuberculosis, cancer
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DOI:
dx.doi.org/10.19261/cjm.2013.08(2).02

Graphical Abstract:
Macrophages play an important role in the pathological development of different diseases. Therefore, macrophage targeting represents an important challenge in design of new medicines. This review gives a general presentation of small molecule-recognition concepts used for macrophage targeting. It describes mechanisms and systems for macrophage-targeted delivery, their obtaining and application.



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A REVIEW OF THE BIOGENESIS OF IRON NANOPARTICLES USING MICROORGANIMS AND THEIR APPLICATIONS

Author(s):

Lilia Anghel, Gheorghe Duca


Field: Physical chemistry and chemical physics
Type: Review
Issue: 2013 Volume 8, no.2
Pages: 32-41
Keywords: nanoparticles, iron, microorganisms, biological synthesis, biomedical applications
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DOI:
dx.doi.org/10.19261/cjm.2013.08(2).03

Graphical Abstract:
Iron-based nanoparticles have gained a lot of attention due to their properties which offer a broad range of biomedical and industrial applications. Traditional methods of synthesis of iron nanoparticles strongly influence their properties and limit their applicability. Recently, there has been a growing interest in the development of biological routes of syntheses of iron nanoparticles as the resulting particles have structural characteristics required by biomedical field. The mechanism for the synthesis of iron-based nanoparticles by microorganisms and its current limitation are presented.



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THE WATER SPRINGS - SOURCES FOR WATER SUPPLY AND IRRIGATION IN THE NISTRU RIVER BASIN

Author(s):

Maria Sandu, Anatol Tarita, Raisa Lozan, Viorica Gladchi, Gheorghe Duca, Sergiu Turcan, Elena Mosanu, Afanasie Prepelita


Field: Ecological chemistry
Type: Research paper
Issue: 2013 Volume 8, no.2
Pages: 42-50
Keywords: groundwater, chemicals state, pollution sources, correlation of components, water type and qualification
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Abstract (PDF)

DOI: dx.doi.org/10.19261/cjm.2013.08(2).04

Graphical Abstract:
In Memory of Valeriu Ropot for his scientific contributions in Waters Protection
The present study estimates chemical composition and status of the groundwater from the Dniester river basin. Research includes defining of springs/fountains location, evaluating physicochemical features of water, highlighting of main pollutants and pollution sources, establishing of water type and quality. The research was achieved within the State Program "Scientific research and water quality management".


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HEAVY METALS AND PHOSPHORUS FORMS MOBILIZATION DURING RE-SUSPENSION OF BOTTOM SEDIMENTS OF THE PRUT RIVER

Author(s):

Larisa Postolachi


Field: Ecological chemistry
Type: Research paper
Issue: 2013 Volume 8, no.2
Pages: 51-56
Keywords: bottom sediments, re-suspension, the Prut River
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Abstract (PDF)

DOI:
dx.doi.org/10.19261/cjm.2013.08(2).05

Graphical Abstract:
 The results suggest that during the re-suspension, bottom sediments can become a relevant source of heavy metals and phosphorus forms which are mobilized in the water horizon overlying the bottom sediments.


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DISTRIBUTION OF PHOSPHORUS FORMS IN “WATER-PARTICULATE MATERIALS-BOTTOM SEDIMENTS” SYSTEM OF THE PRUT RIVER DURING 2009-2012 YEARS

Author(s):

Larisa Postolachi, Vasile Rusu, Tudor Lupascu


Field: Ecological chemistry
Type: Research paper
Issue: 2013 Volume 8, no.2
Pages: 57-66
Keywords: bottom sediments, particulate materials, phosphorus forms, the Prut River
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DOI:
dx.doi.org/10.19261/cjm.2013.08(2).06

Graphical Abstract:
The supplemented scheme for determination of phosphorus forms in natural waters was tested for the River Prut.





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BUFFER PROPERTIES OF SOIL MINERALS. PART 1. THEORETICAL ASPECTS

Author(s):

Povar Igor, Spinu Oxana


Field: Ecological chemistry
Type: Research paper
Issue: 2013 Volume 8, no.2
Pages: 67-72
Keywords: buffer action, complex formation, soil solution, solid phase, thermodynamic stability
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Abstract (PDF)

DOI:
dx.doi.org/10.19261/cjm.2013.08(2).07

Graphical Abstract:
The key quantitative characteristics of the theory of buffer action for polycomponent mono- and two-phase systems have been derived. It is shown, that the buffer properties in relation to the solid phase components are amplified with an increase of solubility due to protolytic or complex formation equilibria in saturated solutions.

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THE INFLUENCE OF APPLIED STABILIZATION METHOD ON THE CRYSTALLINE STABILITY OF YOUNG WHITE WINES

Author(s):

Ecaterina Covaci, Gheorghe Duca, Rodica Sturza


Field: Food chemistry
Type: Research paper
Issue: 2013 Volume 8, no.2
Pages: 73-77
Keywords: young white wine, crystalline stabilization, suspension of bentonite, conductivity
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Abstract (PDF)

DOI:
dx.doi.org/10.19261/cjm.2013.08(2).08

Graphical Abstract:
Crystalline precipitate which occurs due to the presence of tartaric salts is frequently encountered in young wines in form of white-dirty lamellar crystals at the bottom of tank. The aim of the study is to prevent the tartaric salts from crystallization in young wine blend Biance/Sauvignon by implementing various schemes and procedures.

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NICKEL(III) COMPLEX DERIVED FROM 2-HYDROXY-3-METHOXYBENZALDEHYDE SEMICARBAZONE AND 2,2’-BIPYRIDINE

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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Abstract (PDF)

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.


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HOMOTRINUCLEAR Fe3III μ – OXO SALICYLATE CLUSTER. SYNTHESIS, STRUCTURE AND PROPERTIES

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, [Fe3O(SalH)7(H2O)2]∙(DMAA)2(MeOH)(THF)1,5(H2O)2,6. Single-crystal X-ray study shows that the titled complex with the moiety {Fe3O} 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.

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